[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.1"]
[White "Halfhide, Sebastian"]
[Black "Howell, David W L"]
[Result "0-1"]
[BlackTitle "GM"]
[WhiteElo "2091"]
[BlackElo "2698"]
[ECO "C88"]
[Opening "Ruy Lopez"]
[Variation "closed"]
[WhiteFideId "1045946"]
[BlackFideId "410608"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. a4
Bd7 9. c3 O-O 10. d3 Na5 11. Bc2 c5 12. Nbd2 Re8 13. Nf1 Nc6 14. Ng3 Bf8 15. h3
Rc8 16. Be3 h6 17. axb5 axb5 18. d4 exd4 19. cxd4 cxd4 20. Nxd4 Nb4 21. Bb3 d5
22. exd5 Nbxd5 23. Ndf5 Nxe3 24. Rxe3 Rxe3 25. Nxe3 Bc6 26. Qxd8 Rxd8 27. Rc1
Be8 28. Kf1 g6 29. Rd1 Rc8 30. Nd5 Nxd5 31. Bxd5 Be7 32. Ne4 Rc2 33. Ra1 Rc8 34.
Ke2 Kf8 35. Rd1 b4 36. Bb3 Bb5+ 37. Ke3 Re8 38. Kf4 Bd8 39. Bd5 f5 40. Ng3 Bg5+
41. Kf3 Rd8 42. h4 Bf6 43. Bb3 Rxd1 44. Bxd1 Bxh4 45. Ke3 Bd8 46. Be2 Bc6 47.
Bf3 Bb5 48. Be2 Bb6+ 49. Kd2 Ba4 50. f3 Bc7 51. Nf1 Bf4+ 52. Ne3 h5 53. Bd3 Ke7
54. Ke2 Kd6 55. Bc4 Be5 56. Bf7 Bb5+ 57. Kd2 Bf4 58. Bxg6 Ke5 59. g3 Bxg3 60.
Nxf5 Bf4+ 61. Ke1 Bd7 62. Bxh5 Bxf5 63. Bf7 Bc2 64. Ke2 Kd4 65. Bg8 Bc1 66. Bf7
b3 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.2"]
[White "Postny, Evgeny"]
[Black "Den Hartog, Marijn"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[WhiteElo "2642"]
[BlackElo "2088"]
[ECO "E71"]
[Opening "King's Indian"]
[Variation "Makagonov system (5.h3)"]
[WhiteFideId "2804344"]
[BlackFideId "1046098"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Be3 c6 7. Nf3 e5 8. d5 cxd5
9. cxd5 a5 10. Nd2 Nfd7 11. g4 Nc5 12. h4 Nba6 13. g5 Bd7 14. a3 a4 15. Rc1 Qa5
16. Qe2 Rab8 17. Bh3 Bxh3 18. Rxh3 b5 19. Kf1 Rfc8 20. Na2 Bf8 21. Kg2 Nb3 22.
Rxc8 Rxc8 23. Qd1 Nbc5 24. h5 b4 25. hxg6 hxg6 26. Qg4 Rd8 27. Nf1 bxa3 28. bxa3
Qb5 29. Ng3 Qc4 30. Bxc5 Nxc5 31. Nb4 Bg7 32. Nc6 Re8 33. Rh1 Qd3 34. Qf3 Qxf3+
35. Kxf3 f6 36. gxf6 Bxf6 37. Rc1 Nb3 38. Rc3 Bg5 39. Ne2 Bh4 40. Kg2 Rf8 41. f3
Be1 42. Rd3 Kg7 43. Rd1 Bd2 44. Rb1 Be3 45. Rb2 Nd2 46. Ng1 Kh6 47. Rc2 Nb3 48.
Nh3 Bc5 49. Nf2 Ra8 50. Ra2 Nc1 51. Ra1 Nb3 52. Ra2 Nc1 53. Ng4+ Kg7 54. Rb2 Nb3
55. Ra2 Nc1 56. Rb2 Nb3 57. Ra2 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.3"]
[White "Ratsma, Rosa"]
[Black "Tiviakov, Sergei"]
[Result "0-1"]
[BlackTitle "GM"]
[WhiteElo "2088"]
[BlackElo "2639"]
[ECO "B01"]
[Opening "Scandinavian"]
[Variation "Pytel-Wade variation"]
[WhiteFideId "1033662"]
[BlackFideId "1008013"]
[EventDate "2015.07.17"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Bc4 Nf6 5. d3 a6 6. h3 Nc6 7. a4 e6 8. Nge2
Be7 9. Bf4 Qd7 10. Qd2 O-O 11. O-O b6 12. Ng3 Bb7 13. Nge4 Nd5 14. Bh2 Ndb4 15.
Rfe1 Nd4 16. Rac1 b5 17. Bb3 c5 18. Rcd1 Qc6 19. f4 Rfd8 20. Na2 Nxb3 21. Nxb4
Qxe4 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.4"]
[White "Nikolic, Predrag"]
[Black "Bebchuk, Leonid"]
[Result "1-0"]
[WhiteTitle "GM"]
[WhiteElo "2601"]
[BlackElo "2072"]
[ECO "D58"]
[Opening "QGD"]
[Variation "Tartakower (Makagonov-Bondarevsky) system"]
[WhiteFideId "14400014"]
[BlackFideId "2803305"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 h6 6. Bh4 O-O 7. Nf3 b6 8. Rc1 Bb7
9. Bxf6 Bxf6 10. cxd5 exd5 11. Be2 c6 12. O-O Re8 13. b4 b5 14. a4 a6 15. Ne1
Nd7 16. Nd3 Nb6 17. Nc5 Bc8 18. Qc2 g6 19. Bd3 Bg7 20. Ra1 Be6 21. Ne2 f5 22.
Ra2 Bf7 23. Rfa1 Qe7 24. axb5 axb5 25. Ra6 Rxa6 26. Rxa6 Qc7 27. h4 h5 28. Qa2
Nc4 29. Ra7 Qc8 30. Nf4 Nd6 31. Qa5 Bf6 32. Rd7 Ne4 33. Bxe4 dxe4 34. Qa7 Bc4
35. Nxg6 Qa8 36. g3 Qxa7 37. Rxa7 Be2 38. Nd7 Bg7 39. Nde5 Bc4 40. Kg2 Kh7 41.
Nf4 Kg8 42. Nxc4 bxc4 43. Rc7 Rb8 44. Nxh5 Bh8 45. Rxc6 Rxb4 46. Rc8+ Kh7 47.
Rc5 Kh6 48. Nf4 Bg7 49. Rxf5 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.5"]
[White "Van Halderen, Herman"]
[Black "Milov, Leonid"]
[Result "0-1"]
[BlackTitle "GM"]
[WhiteElo "2052"]
[BlackElo "2462"]
[ECO "A56"]
[Opening "Benoni defence"]
[WhiteFideId "1026682"]
[BlackFideId "14101068"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 c5 3. d5 a6 4. Qc2 g6 5. e4 d6 6. Nc3 Bg7 7. Nf3 O-O 8. Nd2 e6
9. a4 Nh5 10. Be2 Nf4 11. Bf3 Qf6 12. Nf1 Nd7 13. Ne2 Nh3 14. Ra3 Ne5 15. Nd2
Ng5 16. h4 Ngxf3+ 17. Nxf3 exd5 18. cxd5 Re8 19. h5 Bd7 20. Kf1 Nxf3 21. Rxf3
Qe7 22. hxg6 fxg6 23. Ng3 b5 24. a5 b4 25. Kg1 Rab8 26. Rf4 Rf8 27. Ne2 Rxf4 28.
Bxf4 Rb5 29. f3 Rxa5 30. g4 Ra2 31. Bc1 Qf6 32. Kg2 Rxb2 33. Bxb2 Qxb2 34. Qxb2
Bxb2 35. Rb1 Bg7 36. Nc1 a5 37. Kg3 g5 38. Ra1 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.6"]
[White "Das, Arghyadip"]
[Black "Van der Scheer, Henk"]
[Result "1-0"]
[WhiteTitle "IM"]
[WhiteElo "2457"]
[BlackElo "2049"]
[ECO "B62"]
[Opening "Sicilian"]
[Variation "Richter-Rauzer, Margate (Alekhine) variation"]
[WhiteFideId "5003610"]
[BlackFideId "1051458"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 e6 7. Bb5 Bd7 8.
Bxc6 bxc6 9. Qf3 e5 10. Nf5 Bxf5 11. Qxf5 Be7 12. O-O h6 13. Bxf6 Bxf6 14. Rad1
O-O 15. Rd3 Qe7 16. Na4 g6 17. Qh3 Bg7 18. Rfd1 Rad8 19. c4 f5 20. Nc3 Kh8 21.
Qe3 Qb7 22. b3 Qe7 23. Qc1 Rf6 24. Qa3 Bf8 25. Qa5 Re6 26. b4 fxe4 27. Nxe4 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.7"]
[White "Oosterom, Erik"]
[Black "De Jong, Jan-Willem"]
[Result "0-1"]
[BlackTitle "IM"]
[WhiteElo "2043"]
[BlackElo "2448"]
[ECO "E91"]
[Opening "King's Indian"]
[Variation "6.Be2"]
[WhiteFideId "1003470"]
[BlackFideId "1008641"]
[EventDate "2015.07.17"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 Bg4 7. Be3 Nfd7 8. Rc1
c5 9. d5 Na6 10. O-O Nc7 11. h3 Bxf3 12. Bxf3 a6 13. a4 Rb8 14. Be2 Re8 15. Qd2
e6 16. Rfe1 exd5 17. exd5 f5 18. Bf1 Qf6 19. Bg5 Qf8 20. f4 Bf6 21. Bxf6 Qxf6
22. Kh2 Kf7 23. Rxe8 Rxe8 24. Re1 Rxe1 25. Qxe1 Qd4 26. g3 Nf6 27. b3 Ne4 28.
Nxe4 fxe4 29. Bg2 e3 30. Qe2 Ne8 31. h4 Nf6 32. Bf3 Qd2 33. Qg2 h5 34. Kg1 Qe1+
35. Kh2 Ng4+ 36. Bxg4 hxg4 37. Qe4 Qf2+ 38. Kh1 Qf1+ 39. Kh2 Qh3+ 40. Kg1 Qxg3+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.8"]
[White "Pijpers, Arthur"]
[Black "Van Briemen, Willem"]
[Result "1-0"]
[WhiteElo "2433"]
[BlackElo "2041"]
[ECO "C19"]
[Opening "French"]
[Variation "Winawer, advance, poisoned pawn variation"]
[WhiteFideId "1019554"]
[BlackFideId "1026445"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 O-O 8. Bd3
f5 9. exf6 Rxf6 10. Bg5 Rf7 11. Qh5 g6 12. Qd1 Qa5 13. Nf3 Nbc6 14. Bd2 c4 15.
Be2 e5 16. Nxe5 Nxe5 17. dxe5 Nc6 18. f4 Qc5 19. Qc1 d4 20. O-O Bf5 21. Kh1 Rd8
22. Bf3 Rfd7 23. Qb2 d3 24. cxd3 Rxd3 25. Be1 Na5 26. Qb4 Qc7 27. Bh4 R8d7 28.
Rae1 Be6 29. Be4 Nc6 30. Qc5 Rxc3 31. f5 gxf5 32. Bxf5 Bxf5 33. e6 Ne7 34. exd7 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.9"]
[White "Van der Meer, Kees"]
[Black "Van Delft, Merijn"]
[Result "1/2-1/2"]
[BlackTitle "IM"]
[WhiteElo "2038"]
[BlackElo "2428"]
[ECO "E84"]
[Opening "King's Indian"]
[Variation "Saemisch, Panno main line"]
[WhiteFideId "1007793"]
[BlackFideId "1004670"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 Nc6 7. Nge2 a6 8. Qd2
Rb8 9. Nc1 e5 10. Nb3 Nh5 11. d5 Ne7 12. c5 f5 13. O-O-O Kh8 14. Kb1 Ng8 15. Be2
Ngf6 16. g3 fxe4 17. fxe4 b6 18. cxb6 cxb6 19. Ka1 b5 20. Qd3 b4 21. Nb1 a5 22.
N3d2 a4 23. Rc1 Bd7 24. Qa6 Qe7 25. Rc7 a3 26. Rhc1 axb2+ 27. Kxb2 Ra8 28. Ra7
Rxa7 29. Qxa7 Qe8 30. Rc7 Bg4 31. Bd3 Nd7 32. Bb5 Nhf6 33. Bg5 Rf7 34. Qb7 Qe7
35. Bxd7 Bxd7 36. Qxb4 h6 37. Be3 Kh7 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.10"]
[White "Van Overdam, Julian"]
[Black "Dellert, Lena"]
[Result "1-0"]
[WhiteElo "2367"]
[BlackElo "1835"]
[ECO "C45"]
[Opening "Scotch"]
[Variation "Mieses variation"]
[WhiteFideId "1015303"]
[BlackFideId "12991511"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Nd5 7. c4 Ba6 8.
b3 g6 9. g3 Bg7 10. Bb2 O-O 11. Bg2 f6 12. e6 Re8 13. O-O f5 14. Qd2 Nb6 15.
exd7 Qxd7 16. Qxd7 Nxd7 17. Bxg7 Kxg7 18. Bxc6 Rad8 19. Nc3 Re6 20. Bd5 Rd6 21.
Rfe1 Kf8 22. Bg2 Nf6 23. Rad1 Rd3 24. Bf1 Rd2 25. Rxd2 Rxd2 26. Re6 Rd6 27. Rxd6
cxd6 28. Bg2 Ke7 29. Nd5+ Nxd5 30. Bxd5 h6 31. f4 Bc8 32. Kf2 Bd7 33. Ke3 Be8
34. Kd4 Kd7 35. h4 Kc7 36. Be6 Kc6 37. b4 Kc7 38. b5 Kb6 39. Kd5 Kc7 40. a4 a6
41. Bg8 axb5 42. axb5 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.11"]
[White "Knudsen, Martin"]
[Black "Erwich, Frank"]
[Result "1/2-1/2"]
[BlackTitle "FM"]
[WhiteElo "2026"]
[BlackElo "2361"]
[ECO "E14"]
[Opening "Queen's Indian"]
[Variation "4.e3"]
[WhiteFideId "1406523"]
[BlackFideId "1007076"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 c5 6. O-O Be7 7. Nbd2 cxd4 8. Nxd4
d5 9. N2f3 O-O 10. cxd5 Qxd5 11. Qb3 Nbd7 12. Qxd5 Nxd5 13. Bb5 Nc5 14. Rd1 Rac8
15. Bd2 a6 16. Be2 Ne4 17. Be1 Rc7 18. Rac1 Rfc8 19. Nb3 Bf6 20. Nfd4 e5 21. Nf5
Rxc1 22. Rxc1 Rxc1 23. Nxc1 Bc8 24. Bc4 Nc7 25. Ng3 Nxg3 26. hxg3 e4 27. b4 Kf8
28. Ne2 Be6 29. Bxe6 fxe6 30. f3 exf3 31. gxf3 Ke7 32. e4 Kd7 33. Kf2 Kc6 34. a4
Ne8 35. f4 e5 36. Ke3 Nd6 37. Kd3 b5 38. a5 Nc4 39. f5 Be7 40. Ng1 Bg5 41. Nf3
Bc1 42. Bc3 Kd6 43. Kc2 Be3 44. Kd3 Bc1 45. Kc2 Be3 46. Kd3 Bc1 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.13"]
[White "Campbell, Ian"]
[Black "Gindi, Shachar"]
[Result "1-0"]
[BlackTitle "FM"]
[WhiteElo "2005"]
[BlackElo "2336"]
[ECO "D00"]
[Opening "Queen's pawn, Mason variation"]
[WhiteFideId "415219"]
[BlackFideId "2804182"]
[EventDate "2015.07.17"]

1. d4 d5 2. Bf4 e6 3. e3 c5 4. c3 Nc6 5. Nf3 Bd6 6. Bg3 Nf6 7. Nbd2 Bxg3 8. hxg3
Qd6 9. Bd3 e5 10. dxe5 Nxe5 11. Nxe5 Qxe5 12. Nf3 Qe7 13. Bb5+ Bd7 14. Bxd7+
Qxd7 15. Qd3 O-O-O 16. O-O Kb8 17. Rfd1 Rhe8 18. Rac1 Qg4 19. b3 Ne4 20. c4 Re6
21. cxd5 Rh6 22. Rc4 f5 23. a4 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.14"]
[White "Visser, Henk-Jan"]
[Black "Veenendaal, Loek"]
[Result "1-0"]
[WhiteElo "2272"]
[BlackElo "1993"]
[ECO "B12"]
[Opening "Caro-Kann"]
[Variation "advance variation"]
[WhiteFideId "1010204"]
[BlackFideId "1049259"]
[EventDate "2015.07.17"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O Ne7 7. Nh4 Bg6 8. Nd2
Nf5 9. Nxg6 hxg6 10. Nf3 Be7 11. c3 Nh4 12. Ne1 Qb6 13. Rb1 c5 14. Qa4 a6 15.
Nd3 cxd4 16. cxd4 Rc8 17. Nc5 Rc6 18. Be3 Nxc5 19. dxc5 Qc7 20. b4 Qxe5 21. g3
d4 22. Rb3 Qd5 23. gxh4 dxe3 24. Rxe3 Rxh4 25. Rd1 Qg5+ 26. Rg3 Qf4 27. Bf3 Kf8
28. Bxc6 Bxc5 29. Bf3 Bxf2+ 30. Kxf2 Rxh2+ 31. Rg2 Qh4+ 32. Ke2 Qc4+ 33. Rd3 Rh4
34. Qb3 Qf4 35. Qc3 Qf5 36. Qc8+ Ke7 37. Qd8# 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.17"]
[White "Jongste, David"]
[Black "Sorensen, Bent"]
[Result "1-0"]
[BlackTitle "FM"]
[WhiteElo "1976"]
[BlackElo "2217"]
[ECO "C03"]
[Opening "French"]
[Variation "Tarrasch"]
[WhiteFideId "1042637"]
[BlackFideId "1400410"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. e5 c5 5. c3 Nc6 6. Bd3 Nh6 7. Ndf3 Nf5 8. Bxf5
exf5 9. Ne2 O-O 10. O-O b6 11. Re1 Ba6 12. e6 f6 13. Ng3 g6 14. Bh6 Re8 15. Nh4
Kh8 16. Nxg6+ hxg6 17. Nxf5 Kh7 18. Re3 Rh8 19. Bg7 Kg8 20. Bxh8 Kxh8 21. Rh3+
Kg8 22. Qg4 Qe8 23. Qh4 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.18"]
[White "Overeem, Marc"]
[Black "Erwich, Frans"]
[Result "1-0"]
[WhiteTitle "FM"]
[WhiteElo "2216"]
[BlackElo "1974"]
[ECO "A40"]
[Opening "Queen's pawn"]
[Variation "Keres defence"]
[WhiteFideId "1004972"]
[BlackFideId "1004638"]
[EventDate "2015.07.17"]

1. c4 b6 2. d4 e6 3. e4 c5 4. d5 exd5 5. cxd5 g6 6. Nc3 Bg7 7. Bf4 a6 8. Nf3 d6
9. Qa4+ Bd7 10. Qc2 Qc7 11. Nd2 Ne7 12. Be2 O-O 13. O-O f5 14. Nc4 Nc8 15. exf5
Bxf5 16. Qd2 b5 17. Ne3 b4 18. Ncd1 Bd7 19. Nc4 Bb5 20. Rc1 Nd7 21. Bg4 Bxc4 22.
Rxc4 Ncb6 23. Be6+ Kh8 24. Rc2 a5 25. Bh6 Nf6 26. Bxg7+ Qxg7 27. Ne3 Rae8 28.
Qd3 Nh5 29. Qb5 Qc7 30. g3 Ng7 31. Bh3 Nf5 32. Nxf5 gxf5 33. Bg2 Re5 34. Re2 f4
35. Rxe5 dxe5 36. Qe2 c4 37. Rd1 Qd6 38. Be4 fxg3 39. hxg3 Rc8 40. Kg2 Rc7 41.
Qh5 Rg7 42. Rh1 h6 43. Qxh6+ Qxh6 44. Rxh6+ 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.19"]
[White "Bishoen, Bob"]
[Black "Kolodkin, Daniil"]
[Result "0-1"]
[WhiteElo "1968"]
[BlackElo "2208"]
[ECO "B20"]
[Opening "Sicilian"]
[Variation "wing gambit, Marshall variation"]
[WhiteFideId "1054104"]
[BlackFideId "1039776"]
[EventDate "2015.07.17"]

1. e4 c5 2. b4 cxb4 3. a3 d5 4. Bb5+ Bd7 5. Bxd7+ Qxd7 6. exd5 Qxd5 7. Nf3 Qe4+
8. Kf1 e6 9. axb4 Bxb4 10. d3 Qd5 11. Be3 Nc6 12. c3 Be7 13. c4 Qd7 14. d4 Nf6
15. Nc3 O-O 16. h3 Rfd8 17. Qb3 b6 18. Rd1 Rac8 19. Ne5 Qb7 20. Ke2 Nxe5 21.
dxe5 Nd7 22. Bf4 Nc5 23. Qc2 Rxd1 24. Qxd1 Rd8 25. Qc2 Qxg2 26. Rh2 Qg1 27. Qb1
Qxb1 28. Nxb1 Rd4 29. Be3 Rxc4 30. Nd2 Rb4 31. Rh1 a5 32. Rc1 g5 33. Nc4 Nb3 34.
Rc3 a4 35. Nxb6 a3 36. Rc8+ Kg7 37. Ra8 a2 38. Rxa2 Rxb6 39. Ra7 Bc5 40. Bxg5
Nd4+ 41. Kd3 Rb3+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.20"]
[White "Kerkvliet, Max"]
[Black "Bakker, Joop"]
[Result "1-0"]
[WhiteElo "2186"]
[BlackElo "1956"]
[ECO "D30"]
[Opening "Queen's gambit declined"]
[WhiteFideId "1025546"]
[BlackFideId "1012100"]
[EventDate "2015.07.17"]

1. d4 d5 2. c4 e6 3. Nf3 b6 4. cxd5 exd5 5. Nc3 Bb7 6. Bf4 Bd6 7. Bxd6 Qxd6 8.
e3 a6 9. Bd3 Nf6 10. Ne5 O-O 11. O-O Nbd7 12. f4 Ne4 13. Rc1 f5 14. Qa4 Ndf6 15.
Rfd1 Rac8 16. a3 c5 17. Bxe4 Nxe4 18. Nxe4 fxe4 19. Qd7 Qxd7 20. Nxd7 Rc6 21.
dxc5 bxc5 22. Rxd5 Rc7 23. Rcxc5 Rfc8 24. Rxc7 Rxc7 25. Rd2 Rc1+ 26. Kf2 h6 27.
Ne5 Rb1 28. f5 a5 29. Rd8+ Kh7 30. Ng6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.22"]
[White "Heemskerk, Wim"]
[Black "Holwijn, Melvin"]
[Result "1-0"]
[WhiteTitle "FM"]
[WhiteElo "2175"]
[BlackElo "1952"]
[ECO "A04"]
[Opening "Reti opening"]
[WhiteFideId "1001000"]
[BlackFideId "1017314"]
[EventDate "2015.07.17"]

1. Nf3 e6 2. g3 b6 3. Bg2 Bb7 4. c4 f5 5. O-O Nf6 6. d4 Be7 7. Nc3 Ne4 8. Bd2
O-O 9. Qc2 Nxd2 10. Qxd2 Bb4 11. Rad1 Bxc3 12. Qxc3 Be4 13. d5 exd5 14. cxd5 d6
15. Nd4 Bxg2 16. Kxg2 Qe7 17. Ne6 Rf7 18. Qc4 a5 19. a3 Qd7 20. Rc1 Ra7 21. b4
axb4 22. axb4 b5 23. Qd4 Ra4 24. Rxc7 Qe8 25. Rfc1 Nc6 26. R1xc6 Ra8 27. Rxf7
Qxf7 28. Rc7 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.23"]
[White "Hawkins, James N H"]
[Black "Van der Marel, Lambertus"]
[Result "0-1"]
[WhiteElo "1942"]
[BlackElo "2161"]
[ECO "C50"]
[Opening "Giuoco Pianissimo"]
[Variation "Italian four knights variation"]
[WhiteFideId "409928"]
[BlackFideId "1005855"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Nc3 a6 6. a3 d6 7. h3 Be6 8. Qe2 Qd7
9. Be3 O-O 10. Bxe6 fxe6 11. Bxc5 dxc5 12. O-O Nd4 13. Qd1 Qd6 14. Nxd4 cxd4 15.
Ne2 Nd7 16. Qd2 Rf6 17. f4 Raf8 18. fxe5 Nxe5 19. Rxf6 Rxf6 20. Rf1 Rxf1+ 21.
Kxf1 c5 22. Kg1 Ng6 23. Qg5 Qe7 24. Qg4 Qf6 25. Qg3 Qe5 26. Qf3 b5 27. g3 Qg5
28. Qf2 Ne5 29. Nf4 Qh6 30. Kg2 g5 31. Ne2 g4 32. Ng1 gxh3+ 33. Nxh3 Ng4 34. Qe2
Qh5 35. Ng1 Qh2+ 36. Kf3 Ne5+ 37. Kf4 Ng6+ 38. Kf3 Qxg1 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.17"]
[Round "1.25"]
[White "De Mooij, Marco"]
[Black "Wallgren, Ulf"]
[Result "0-1"]
[WhiteElo "1929"]
[BlackElo "2141"]
[ECO "B33"]
[Opening "Sicilian"]
[Variation "Pelikan (Lasker/Sveshnikov) variation"]
[WhiteFideId "1031007"]
[BlackFideId "1706527"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 h6 7. Nd5 Nxd5 8.
exd5 a6 9. dxc6 axb5 10. cxd7+ Bxd7 11. Qd5 Qc7 12. Be3 Bc6 13. Qb3 Bd6 14.
O-O-O O-O 15. Be2 Ra4 16. Bb6 Qxb6 17. Rxd6 Qa5 18. Kb1 Ra8 19. Bh5 Be8 20. a3
Rf4 21. Rhd1 b4 22. R6d5 Qc7 23. f3 bxa3 24. g3 Rc4 25. bxa3 g6 26. Bg4 Ba4 27.
Rd8+ Rxd8 28. Rxd8+ Kg7 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.1"]
[White "Howell, David W L"]
[Black "Visser, Henk-Jan"]
[Result "1-0"]
[WhiteTitle "GM"]
[WhiteElo "2698"]
[BlackElo "2272"]
[ECO "D15"]
[Opening "QGD Slav"]
[Variation "4.Nc3"]
[WhiteFideId "410608"]
[BlackFideId "1010204"]
[EventDate "2015.07.17"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 a6 5. e3 Bf5 6. Qb3 b5 7. c5 a5 8. Ne5 a4 9.
Qd1 g6 10. g4 Be6 11. Bg2 Qc8 12. h3 Bg7 13. Qc2 Na6 14. Nd3 O-O 15. O-O Re8 16.
Ne2 Qc7 17. Bd2 Ne4 18. Be1 Bh6 19. Nef4 Bd7 20. f3 e5 21. dxe5 Ng5 22. Qf2 Qa7
23. b4 axb3 24. axb3 Qb7 25. Qh4 d4 26. Qxh6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.2"]
[White "Tiviakov, Sergei"]
[Black "Johansson, Gunnar"]
[Result "1-0"]
[WhiteTitle "GM"]
[WhiteElo "2639"]
[BlackElo "2223"]
[ECO "B40"]
[Opening "Sicilian defence"]
[WhiteFideId "1008013"]
[BlackFideId "1703501"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. Bc4 d6 6. exd6 Bxd6 7. d4 cxd4 8. Qxd4
O-O 9. O-O Nc6 10. Qe4 Nf6 11. Qe2 Qc7 12. Nbd2 Bd7 13. Re1 Rad8 14. Bb3 h6 15.
Ne4 Nxe4 16. Qxe4 Ne7 17. Ne5 Nd5 18. h3 Bc8 19. Bc2 Nf6 20. Qe2 b6 21. Bf4 Bb7
22. Rad1 Bd5 23. a4 Qb7 24. Rd3 Bc4 25. Nxc4 Bxf4 26. Rf3 Bb8 27. g3 Rd7 28. Bd3
Rfd8 29. a5 Bc7 30. a6 Qc8 31. Na3 Bb8 32. Nc2 Bd6 33. Bb5 Rc7 34. Rd1 Bf8 35.
Rfd3 Rxd3 36. Qxd3 g6 37. Qd8 Kg7 38. Qxc8 Rxc8 39. Nd4 Nd5 40. Bd7 Rc5 41. Bxe6
Nc7 42. Bc8 Ra5 43. Nc6 Ra4 44. Rd7 Nxa6 45. b4 Ra3 46. Ne5 Rxc3 47. Rxf7+ 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.3"]
[White "Overeem, Marc"]
[Black "Nikolic, Predrag"]
[Result "0-1"]
[WhiteTitle "FM"]
[BlackTitle "GM"]
[WhiteElo "2216"]
[BlackElo "2601"]
[ECO "A21"]
[Opening "English opening"]
[WhiteFideId "1004972"]
[BlackFideId "14400014"]
[EventDate "2015.07.17"]

1. c4 e5 2. Nc3 d6 3. g3 g6 4. d4 Nd7 5. Bg2 Bg7 6. Nf3 Nh6 7. O-O O-O 8. h3 c6
9. Rb1 f5 10. b3 e4 11. Ne1 Nf7 12. Nc2 Nf6 13. d5 Bd7 14. dxc6 bxc6 15. Na4 Qe7
16. Qd2 Rfd8 17. Bb2 Be8 18. Rbd1 Rab8 19. Qa5 Nh5 20. Bxg7 Kxg7 21. Qc3+ Kg8
22. Qe3 Nf6 23. Nc3 d5 24. cxd5 cxd5 25. Nd4 Rdc8 26. Rc1 Rc7 27. Rc2 Rbc8 28.
Rfc1 h5 29. Nd1 Rxc2 30. Rxc2 Rxc2 31. Nxc2 h4 32. Nd4 hxg3 33. Qxg3 Nd6 34. Qg5
Kh7 35. Ne3 Qe5 36. Nec2 Nf7 37. Qh4+ Kg7 38. Qf4 Nh5 39. Qxe5+ Nxe5 40. e3 Nd3
41. f4 Kf6 42. Bf1 Bd7 43. a3 Nhxf4 44. exf4 Nxf4 45. h4 Ne6 46. Bb5 Nxd4 47.
Nxd4 Bc8 48. Be8 f4 49. Kf2 Bg4 50. Bb5 Ke5 51. Nc6+ Kd6 52. b4 a6 53. Ba4 e3+
54. Ke1 f3 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.4"]
[White "Milov, Leonid"]
[Black "Kerkvliet, Max"]
[Result "1-0"]
[WhiteTitle "GM"]
[WhiteElo "2462"]
[BlackElo "2186"]
[ECO "B01"]
[Opening "Scandinavian (centre counter) defence"]
[WhiteFideId "14101068"]
[BlackFideId "1025546"]
[EventDate "2015.07.17"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 Bg4 4. Be2 Nc6 5. d4 O-O-O 6. c4 Qf5 7. Be3 Bxf3 8.
Bxf3 Nxd4 9. Bxd4 Qe6+ 10. Be2 Qe4 11. O-O Qxd4 12. Qa4 Qxb2 13. Qxa7 e6 14. Bf3
c6 15. Nc3 Qxc3 16. Rab1 Bb4 17. Qb6 Qd4 18. Qxb4 Qa7 19. Rb3 Nf6 20. Rfb1 Nd7
21. Qxb7+ Qxb7 22. Rxb7 Ne5 23. Be2 c5 24. a4 Nc6 25. Bf3 Nb4 26. Rb5 Nd3 27. a5
Kc7 28. a6 Ne5 29. Rb7+ 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.5"]
[White "Kolodkin, Daniil"]
[Black "Das, Arghyadip"]
[Result "1/2-1/2"]
[BlackTitle "IM"]
[WhiteElo "2208"]
[BlackElo "2457"]
[ECO "B51"]
[Opening "Sicilian"]
[Variation "Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack"]
[WhiteFideId "1039776"]
[BlackFideId "5003610"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O a6 5. Bd3 Ngf6 6. Re1 b5 7. c4 b4 8. a3
bxa3 9. Rxa3 Bb7 10. Bc2 e5 11. d3 Be7 12. Ba4 O-O 13. Bxd7 Nxd7 14. Bd2 f5 15.
Ba5 Qc8 16. Nc3 Bd8 17. Nd5 Bxd5 18. exd5 Bxa5 19. Rxa5 Rb8 20. Qd2 Rb6 21. Ng5
Qb7 22. Ra2 Rb8 23. Re2 h6 24. Nf3 Nf6 25. Nh4 Qd7 26. f4 e4 27. dxe4 fxe4 28.
g3 Rb4 29. Qc2 R8b6 30. Ng2 Qh3 31. Ne3 h5 32. Nd1 Qf5 33. Nf2 Qg6 34. Nxe4 Nxe4
35. Rxe4 Rxb2 36. Rxb2 Rxb2 37. Qxb2 Qxe4 38. Qb8+ Kh7 39. Qxd6 Qe1+ 40. Kg2
Qe2+ 41. Kg1 Qe1+ 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.6"]
[White "De Jong, Jan-Willem"]
[Black "Heemskerk, Wim"]
[Result "1-0"]
[WhiteTitle "IM"]
[BlackTitle "FM"]
[WhiteElo "2448"]
[BlackElo "2175"]
[ECO "B07"]
[Opening "Pirc"]
[Variation "Ufimtsev-Pytel variation"]
[WhiteFideId "1008641"]
[BlackFideId "1001000"]
[EventDate "2015.07.17"]

1. d4 d6 2. e4 Nf6 3. Nc3 c6 4. f4 Qa5 5. e5 Ne4 6. Bd3 Nxc3 7. Qd2 g6 8. Nf3
Bg4 9. O-O Bxf3 10. Rxf3 e6 11. exd6 Bxd6 12. bxc3 Nd7 13. Qf2 O-O-O 14. Be3 Nb6
15. Rb1 Bb8 16. Rb3 Qxa2 17. Qe2 Nd5 18. Bd2 Qa5 19. Rf1 Qc7 20. c4 Nb6 21. c5
Nd5 22. g3 Qe7 23. Rfb1 Rd7 24. Ba6 Nb6 25. cxb6 bxa6 26. Qxa6+ Kd8 27. bxa7
Bxa7 28. Rb8+ 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.7"]
[White "Van der Marel, Lambertus"]
[Black "Pijpers, Arthur"]
[Result "1/2-1/2"]
[WhiteElo "2161"]
[BlackElo "2433"]
[ECO "A01"]
[Opening "Nimzovich-Larsen attack"]
[Variation "classical variation"]
[WhiteFideId "1005855"]
[BlackFideId "1019554"]
[EventDate "2015.07.17"]

1. b3 d5 2. Bb2 Bg4 3. g3 e6 4. Bg2 Nf6 5. Nf3 Nbd7 6. O-O Bd6 7. d3 O-O 8. Nbd2
Qe7 9. c4 c6 10. Qc2 Bh5 11. Rae1 a5 12. e4 dxe4 13. dxe4 e5 14. Nh4 Bb4 15. Nf5
Qc5 16. h3 Rfd8 17. g4 Nf8 18. Rd1 Bg6 19. Nf3 N6d7 20. Qc1 Bxf5 21. exf5 Qe7
22. a3 Bc5 23. Rfe1 f6 24. Nd2 Bb6 25. Qc2 Bc5 26. Qc1 Bb6 27. Qc2 Nc5 28. Ne4
Nxe4 29. Bxe4 Bc5 30. Qc1 Rxd1 31. Rxd1 Rd8 32. Rxd8 Qxd8 33. Bc3 Qb6 34. Qb2
Bd4 35. b4 axb4 36. axb4 Bxc3 37. Qxc3 Qd4 38. Qxd4 exd4 39. f4 c5 40. Bxb7 Nd7
41. Bc6 Nb8 42. Bd5+ Kf8 43. bxc5 Na6 44. c6 Ke7 45. Kf2 Kd6 46. Ke2 Kc5 47. h4
Nc7 48. Kd3 Na6 49. Ke4 Nc7 50. g5 Ne8 51. Kf3 Nc7 52. Kg4 d3 53. Bf3 Ne8 54.
Kh5 Kd6 55. gxf6 Nxf6+ 56. Kg5 d2 57. h5 Ne4+ 58. Kh4 h6 59. f6 Nxf6 60. Kg3
Ne4+ 61. Kg4 Nf2+ 62. Kf5 Nd3 63. Kg6 Nxf4+ 64. Kxg7 Nxh5+ 65. Bxh5 Kxc6 66.
Kxh6 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.8"]
[White "Wallgren, Ulf"]
[Black "Van Overdam, Julian"]
[Result "0-1"]
[WhiteElo "2141"]
[BlackElo "2367"]
[ECO "B40"]
[Opening "Sicilian defence"]
[WhiteFideId "1706527"]
[BlackFideId "1015303"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 e6 3. c3 d5 4. e5 d4 5. Bd3 Nc6 6. O-O Nge7 7. Re1 Ng6 8. g3 f5
9. h4 Be7 10. h5 Nf8 11. Na3 g6 12. Qe2 gxh5 13. Nc4 Ng6 14. Nd6+ Bxd6 15. exd6
O-O 16. cxd4 Nxd4 17. Nxd4 cxd4 18. Bc4 Qxd6 19. d3 h4 20. Bh6 hxg3 21. Bxf8
Kxf8 22. fxg3 Qxg3+ 23. Qg2 Qxg2+ 24. Kxg2 Bd7 25. Kf2 Ke7 26. Rh1 Rh8 27. Rag1
Kf6 28. Rh6 Kg7 29. Rh5 h6 30. Ke2 Kf6 31. Kd2 Ne5 32. Rgh1 Ng4 33. Bb3 Be8 34.
R5h4 h5 35. Re1 e5 36. Bd5 Bg6 37. Rc1 e4 38. Bxb7 Ne5 39. Rhh1 e3+ 40. Ke2 Rb8
41. Rc7 f4 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.9"]
[White "Gindi, Shachar"]
[Black "Jongste, David"]
[Result "1-0"]
[WhiteTitle "FM"]
[WhiteElo "2336"]
[BlackElo "1976"]
[ECO "A16"]
[Opening "English opening"]
[WhiteFideId "2804182"]
[BlackFideId "1042637"]
[EventDate "2015.07.17"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 d6 5. Nf3 O-O 6. O-O Nc6 7. Rb1 a5 8. a3 e5
9. d3 Re8 10. Nd2 Be6 11. b4 axb4 12. axb4 d5 13. b5 Ne7 14. Bb2 c6 15. Nf3 dxc4
16. Nxe5 Nfd5 17. Nxd5 Bxd5 18. Nxc4 Bxg2 19. Kxg2 cxb5 20. Bxg7 bxc4 21. Ba1
Qd5+ 22. Kg1 cxd3 23. exd3 Nc6 24. Qb3 Qxb3 25. Rxb3 Rad8 26. Kg2 Nd4 27. Rxb7
Nc2 28. Bf6 Rxd3 29. Rfb1 Rd6 30. Rb8 Re6 31. Rxe8+ Rxe8 32. Rb3 h6 33. g4 g5
34. Rh3 Kh7 35. Bxg5 Re6 36. Bd2 Kg7 37. Kf1 f6 38. Bxh6+ Kf7 39. Rc3 Nd4 40.
Rc7+ Kg6 41. Be3 Nc6 42. h4 Ne7 43. h5+ 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.10"]
[White "Van der Raaf, Erik"]
[Black "Postny, Evgeny"]
[Result "0-1"]
[BlackTitle "GM"]
[WhiteElo "2110"]
[BlackElo "2642"]
[ECO "B10"]
[Opening "Caro-Kann defence"]
[WhiteFideId "1004115"]
[BlackFideId "2804344"]
[EventDate "2015.07.17"]

1. e4 c6 2. Ne2 d5 3. e5 c5 4. d4 Nc6 5. c3 Bg4 6. dxc5 Nxe5 7. Qd4 Bxe2 8. Bxe2
Nc6 9. Bb5 Nf6 10. Be3 g6 11. O-O Bg7 12. Nd2 O-O 13. Qh4 Qc7 14. Rad1 h5 15.
Nf3 e6 16. Rfe1 Ne4 17. Bd3 f5 18. Bxe4 fxe4 19. Nd4 Qf7 20. Nb5 Ne5 21. Nd6 Qc7
22. Qh3 Ng4 23. Re2 Be5 24. f3 Nxe3 25. Qxe6+ Kh7 26. Rxe3 Bf4 27. Ree1 Qxc5+
28. Kh1 Qxd6 29. Qxd6 Bxd6 30. Rxd5 Rad8 31. Rxe4 Bc5 32. Rde5 Rd1+ 33. Re1
Rxe1+ 34. Rxe1 h4 35. b4 Bf2 36. Rf1 Rd8 37. h3 Rd2 38. a4 Rc2 39. c4 Bg3 40. c5
Rb2 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.11"]
[White "Chatalbashev, Boris"]
[Black "Happel, Henk"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "FM"]
[WhiteElo "2516"]
[BlackElo "2107"]
[ECO "A13"]
[Opening "English"]
[Variation "Kurajica defence"]
[WhiteFideId "2900440"]
[BlackFideId "1001078"]
[EventDate "2015.07.17"]

1. c4 e6 2. Nf3 d5 3. g3 c6 4. b3 Nf6 5. Bg2 Be7 6. Bb2 O-O 7. O-O b6 8. d3 Bb7
9. Nbd2 c5 10. d4 Nc6 11. cxd5 exd5 12. Rc1 Nxd4 13. Nxd4 cxd4 14. Bxd4 Rc8 15.
e3 Qd7 16. Nf3 Rxc1 17. Qxc1 Rc8 18. Qb2 Qf5 19. Rc1 Rxc1+ 20. Qxc1 Qc8 21. Qb2
Qf5 22. h3 h6 23. g4 Qe6 24. Bc3 Qd7 25. Ne5 Qd8 26. Nd3 Ne8 27. Nf4 Bf6 28. Bd4
Qd6 29. b4 Bxd4 30. Qxd4 Nc7 31. a4 Ne6 32. Nxe6 Qxe6 33. a5 Qc6 34. Qe5 bxa5
35. bxa5 Kh7 36. h4 a6 37. g5 hxg5 38. hxg5 Qb5 39. Bf3 Qd7 40. Kg2 d4 41. Qh2+
Kg8 42. Qb8+ Bc8 43. exd4 Qh3+ 44. Kg1 Qxf3 45. Qxc8+ Kh7 46. Qc2+ Kg8 47. Qd2
Qd5 48. Kh2 f6 49. gxf6 gxf6 50. Kg3 Kf7 51. f3 Ke6 52. Qe2+ Kf7 53. Qd2 Ke6 54.
Qb4 Qg5+ 55. Kf2 Qh4+ 56. Ke2 Qh2+ 57. Kd3 Qf2 58. Qc4+ Kf5 59. Qd5+ Kg6 60.
Qe4+ f5 61. Qe6+ 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.12"]
[White "Petrov, Marian"]
[Black "Van der Meer, Kees"]
[Result "1-0"]
[WhiteTitle "GM"]
[WhiteElo "2487"]
[BlackElo "2038"]
[ECO "B31"]
[Opening "Sicilian"]
[Variation "Nimzovich-Rossolimo attack (with ...g6, without ...d6)"]
[WhiteFideId "2901773"]
[BlackFideId "1007793"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 Bg7 6. h3 Nf6 7. Nc3 O-O 8. Be3
Nd7 9. Qd2 e5 10. h4 f6 11. h5 Rf7 12. hxg6 hxg6 13. Nh4 g5 14. Nf5 b6 15. O-O-O
Nf8 16. g3 a5 17. f4 Ne6 18. fxe5 fxe5 19. Qh2 Raa7 20. Rdf1 Qf6 21. Qh7+ Kf8
22. Rf2 Rac7 23. Nd1 Rcd7 24. Nh6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.13"]
[White "Van Delft, Merijn"]
[Black "Knudsen, Martin"]
[Result "1-0"]
[WhiteTitle "IM"]
[WhiteElo "2428"]
[BlackElo "2026"]
[ECO "B07"]
[Opening "Pirc defence"]
[WhiteFideId "1004670"]
[BlackFideId "1406523"]
[EventDate "2015.07.17"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 exd4 5. Nxd4 g6 6. Be3 Bg7 7. Qd2 a6 8.
O-O-O b5 9. f3 h5 10. Kb1 Bd7 11. Bg5 Qc8 12. Nd5 Nxd5 13. exd5 O-O 14. h3 Qb7
15. Ne2 b4 16. g4 c6 17. Bh6 h4 18. Bxg7 Kxg7 19. Qg5 cxd5 20. Nf4 Bb5 21. Nh5+
Kh7 22. Nf6+ Kg7 23. Nh5+ Kh7 24. Nf6+ Kg7 25. Nxd5 Nd7 26. Bd3 Bxd3 27. Rxd3 f6
28. Qxh4 Ne5 29. Rdd1 Nxf3 30. Qg3 Ne5 31. h4 a5 32. g5 fxg5 33. hxg5 Rh8 34.
Rhe1 Rae8 35. Nf6 Re6 36. Rxd6 Qe7 37. Rxe6 Qxe6 38. b3 a4 39. bxa4 Nd3 40. cxd3 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.14"]
[White "Erwich, Frank"]
[Black "Roozendaal, Marc"]
[Result "1-0"]
[WhiteTitle "FM"]
[WhiteElo "2361"]
[BlackElo "1989"]
[ECO "B10"]
[Opening "Caro-Kann"]
[Variation "anti-anti-Caro-Kann defence"]
[WhiteFideId "1007076"]
[BlackFideId "1003488"]
[EventDate "2015.07.17"]

1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Nf6 5. Nc3 Nxd5 6. Nf3 Nc6 7. d4 e6 8.
Bd3 Be7 9. O-O Bf6 10. Be4 Nce7 11. Qd3 Bd7 12. Ne5 Bxe5 13. dxe5 Nxc3 14. bxc3
Bc6 15. Bxc6+ bxc6 16. Qxd8+ Rxd8 17. Ba3 Nd5 18. Rac1 f6 19. Rfe1 fxe5 20. Rxe5
Kf7 21. g3 Rd7 22. c4 Nb6 23. Rc3 Kf6 24. Re4 e5 25. Rf3+ Ke6 26. Bb2 Rd1+ 27.
Kg2 Nd7 28. Bxe5 Nxe5 29. Rfe3 Rhd8 30. Rxe5+ Kd6 31. Re7 a5 32. R3e5 Rc1 33.
R5e6+ Kc5 34. Rxg7 Rxc4 35. Rxh7 Rd2 36. h4 Rxa2 37. h5 Kd5 38. Re1 Rcc2 39. Rf7
Rab2 40. h6 Rb8 41. h7 a4 42. Rf5+ Kd6 43. Rh1 Rh8 44. Rg5 Rf8 45. Rg8 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.15"]
[White "Den Hartog, Marijn"]
[Black "Palit, Somak"]
[Result "0-1"]
[BlackTitle "IM"]
[WhiteElo "2088"]
[BlackElo "2360"]
[ECO "C60"]
[Opening "Ruy Lopez"]
[Variation "Cozio defence"]
[WhiteFideId "1046098"]
[BlackFideId "5010454"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. d4 exd4 5. Bg5 h6 6. Bh4 g5 7. Bg3 Bg7 8. O-O
a6 9. Bxc6 dxc6 10. Qd3 Be6 11. Qa3 g4 12. Nh4 Qd7 13. f4 gxf3 14. Rxf3 O-O-O
15. Nd2 Ng6 16. Nxg6 fxg6 17. Nb3 Bf8 18. Nc5 Qe7 19. Qa5 Bc4 20. Nd3 Bg7 21.
Raf1 Rd7 22. b3 b6 23. Qe1 Bg8 24. a4 a5 25. Qe2 Kb7 26. Ra1 g5 27. Rb1 Bh7 28.
Nf2 Bg6 29. Rd3 h5 30. h3 Rf8 31. b4 axb4 32. Rdb3 c5 33. a5 Bf7 34. R3b2 d3 35.
Nxd3 Bxb2 36. Rxb2 Bc4 37. axb6 cxb6 38. e5 Qe6 39. Qe4+ Qd5 40. Qe2 Bxd3 41.
cxd3 Qxd3 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.16"]
[White "Wilschut, Peter"]
[Black "Corstjens, Rolf"]
[Result "1-0"]
[WhiteElo "2238"]
[BlackElo "1953"]
[ECO "A16"]
[Opening "English opening"]
[WhiteFideId "1007165"]
[BlackFideId "1045687"]
[EventDate "2015.07.17"]

1. c4 Nf6 2. Nc3 c6 3. Nf3 d6 4. g3 e5 5. d4 Nbd7 6. Bg2 Be7 7. O-O O-O 8. Qc2
a6 9. a4 Rb8 10. Rd1 Qc7 11. a5 b5 12. axb6 Qxb6 13. c5 Qc7 14. cxd6 Bxd6 15.
dxe5 Nxe5 16. Rxd6 Nxf3+ 17. Bxf3 Qxd6 18. Bf4 Qb4 19. Bxb8 Qxb8 20. Bxc6 Bb7
21. Bxb7 Qxb7 22. Rd1 g6 23. Rd6 Ng4 24. Nd5 Qb5 25. h3 Ne5 26. b3 f5 27. Ne7+
Kf7 28. Rd5 Qb8 29. Qc5 Ke6 30. f4 Nf7 31. Qe3+ Kf6 32. Nc6 Qc8 33. Qd4+ Ke6 34.
Qc4 Nd6 35. Nd4+ Kd7 36. Qb4 Rf6 37. Nf3 Qc1+ 38. Kf2 Kc6 39. Rd4 Re6 40. Ne5+
Kc7 41. Qa5+ Kb8 42. Qb6+ Kc8 43. Rxd6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.17"]
[White "Van der Elburg, Freddie"]
[Black "Vreeburg, Jan"]
[Result "1-0"]
[WhiteElo "2185"]
[BlackElo "1901"]
[ECO "A03"]
[Opening "Bird's opening"]
[WhiteFideId "1007904"]
[BlackFideId "1019066"]
[EventDate "2015.07.17"]

1. f4 d5 2. Nf3 c5 3. g3 Nc6 4. Bg2 g6 5. O-O Bg7 6. d3 Nf6 7. c3 O-O 8. Na3 Bd7
9. Qe1 e6 10. e4 dxe4 11. dxe4 Ne7 12. Ne5 a6 13. Be3 Qc7 14. Qf2 b6 15. Nac4
Bb5 16. h3 Rac8 17. a4 Bxc4 18. Nxc4 Nd7 19. Rfd1 Rfd8 20. a5 b5 21. Nd6 Rb8 22.
g4 Bf8 23. e5 Nc6 24. Bxc5 Ncxe5 25. Bb6 Nxb6 26. axb6 Rxb6 27. fxe5 Bg7 28. Rf1
Rf8 29. g5 Bxe5 30. Ne4 Rbb8 31. Rxa6 b4 32. Ra7 Qb6 33. Qxb6 Rxb6 34. Nf6+ Kg7
35. Nd7 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.18"]
[Round "2.23"]
[White "Bebchuk, Leonid"]
[Black "Bishoen, Bob"]
[Result "0-1"]
[WhiteElo "2072"]
[BlackElo "1968"]
[ECO "B72"]
[Opening "Sicilian"]
[Variation "dragon, 6.Be3"]
[WhiteFideId "2803305"]
[BlackFideId "1054104"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 a6 7. f3 b5 8. Qd2
Bb7 9. O-O-O Nbd7 10. g4 h6 11. Kb1 b4 12. Na4 e5 13. Ne2 d5 14. exd5 Bxd5 15.
Bg2 Bc6 16. b3 Bxa4 17. bxa4 Qa5 18. f4 Rd8 19. h3 Be7 20. Qc1 O-O 21. fxe5 Nxe5
22. Bxh6 Nc4 23. Rxd8 Rxd8 24. Rd1 Na3+ 25. Kb2 Qe5+ 26. Kb3 Qxe2 27. Rxd8+ Bxd8
28. Bf1 Qe6+ 29. Kb2 a5 30. Qe3 Ne4 31. Qd3 Bf6+ 32. Kc1 Qe5 33. c3 Nxc3 34. Bd2
Nxa2+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.1"]
[White "Milov, Leonid"]
[Black "Howell, David W L"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2462"]
[BlackElo "2698"]
[ECO "C11"]
[Opening "French"]
[Variation "Steinitz variation"]
[WhiteFideId "14101068"]
[BlackFideId "410608"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nf3 c5 6. Ne2 Qb6 7. c3 Nc6 8. a3 f6
9. exf6 Nxf6 10. b4 cxd4 11. cxd4 Bd6 12. Nc3 O-O 13. Be2 Ne4 14. Na4 Qd8 15.
O-O b6 16. Bb2 Qf6 17. Nc3 Bb7 18. Nb5 Bb8 19. Rc1 Bf4 20. Rc2 Rac8 21. g3 Bb8
22. Nc3 Nd6 23. Rd2 Nc4 24. Bxc4 dxc4 25. Nh4 Qh6 26. Qe2 Rcd8 27. Rfd1 Bf4 28.
gxf4 Qxh4 29. d5 exd5 30. Nxd5 Rde8 31. Qf3 Re6 32. f5 Ne5 33. Bxe5 Rxe5 34.
Nf6+ Qxf6 35. Qxb7 Rxf5 36. Qc7 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.2"]
[White "Van Overdam, Julian"]
[Black "Tiviakov, Sergei"]
[Result "1/2-1/2"]
[BlackTitle "GM"]
[WhiteElo "2367"]
[BlackElo "2639"]
[ECO "C07"]
[Opening "French"]
[Variation "Tarrasch, open variation"]
[WhiteFideId "1015303"]
[BlackFideId "1008013"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. c3 cxd4 5. cxd4 dxe4 6. Nxe4 Bb4+ 7. Nc3 Nf6 8.
Nf3 O-O 9. a3 Be7 10. Bc4 Nbd7 11. O-O Nb6 12. Bb3 Bd7 13. Ne5 Bc6 14. Re1 Nbd5
15. Qd3 Rc8 16. Bc2 g6 17. Bh6 Re8 18. Qh3 Qd6 19. Bg5 Nh5 20. Ne4 Qd8 21. Bxe7
Rxe7 22. Bb3 Kg7 23. Rac1 Rec7 24. Rcd1 Ndf4 25. Qe3 Bd5 26. g3 Bxe4 27. Qxe4
Nd5 28. Nd3 Nhf6 29. Qe5 Kg8 30. Rc1 Rxc1 31. Rxc1 Rxc1+ 32. Nxc1 Qb6 33. Qb8+
Kg7 34. Qe5 h5 35. h3 Kf8 36. Bxd5 Nxd5 37. Nd3 Qc7 38. Nc5 b6 39. Ne4 Ke7 40.
Qg5+ Ke8 41. h4 a5 42. Qd2 Kd7 43. Ng5 Ke7 44. Nf3 Kf8 45. Ne5 Kg7 46. Kg2 Ne7
47. b4 a4 48. Nf3 Qc6 49. Qf4 Nf5 50. Qe5+ f6 51. Qf4 Kf7 52. Qd2 Ke7 53. Qd3 b5
54. Kg1 Qd5 55. Qc3 Kd7 56. Kg2 Qc4 57. Qd2 Qd5 58. Qc3 Nd6 59. Qd3 Qe4 60. Qd2
Nf5 61. Qc3 Qd5 62. Qd2 Qb3 63. Qc1 Ne7 64. Qf4 Nd5 65. Qb8 Nc7 66. Qf8 Qxa3 67.
Qxf6 Kc8 68. Qf8+ Kb7 69. Ng5 Qb3 70. Ne4 Qd5 71. f3 a3 72. Nc5+ Ka7 73. Qg7 Kb6
74. Qf8 a2 75. Qb8+ Kc6 76. Qa7 Qxd4 77. Qxa2 Qxb4 78. Nxe6 Nd5 79. Nd8+ Kc5 80.
Qf2+ Kd6 81. Nf7+ Kc6 82. Qc2+ Qc3 83. Qxg6+ Nf6 84. Ng5 Qd2+ 85. Kh3 Qd7+ 86.
Kg2 Qd2+ 87. Kh3 Qd7+ 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.3"]
[White "Nikolic, Predrag"]
[Black "De Jong, Jan-Willem"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "IM"]
[WhiteElo "2601"]
[BlackElo "2448"]
[ECO "D22"]
[Opening "QGA"]
[Variation "Haberditz variation"]
[WhiteFideId "14400014"]
[BlackFideId "1008641"]
[EventDate "2015.07.17"]

1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. e3 b5 5. a4 Bb7 6. b3 e6 7. bxc4 bxc4 8. Bxc4
Nf6 9. O-O Nbd7 10. Nbd2 c5 11. Rb1 Qc7 12. Ba3 Bd6 13. Be2 O-O 14. Nc4 Be7 15.
Qd2 Be4 16. Rb2 Nd5 17. Rc1 Rfc8 18. Nce5 Bxf3 19. Nxf3 Qd8 20. Rbc2 cxd4 21.
Bxe7 Rxc2 22. Rxc2 Qxe7 23. Nxd4 h6 24. a5 Qa3 25. g3 Ne5 26. Nc6 Rc8 27. Nxe5
Rxc2 28. Qxc2 Qa1+ 29. Bf1 Qxe5 30. Qc8+ Kh7 31. Qxa6 Nxe3 32. fxe3 Qxe3+ 33.
Kh1 Qe4+ 34. Bg2 Qe1+ 35. Qf1 Qxa5 36. Qxf7 Qe1+ 37. Qf1 Qe3 38. Bf3 g6 39. Qe2
Qb6 40. Kg2 Qd6 41. Qd1 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.4"]
[White "Postny, Evgeny"]
[Black "Gindi, Shachar"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "FM"]
[WhiteElo "2642"]
[BlackElo "2336"]
[ECO "E06"]
[Opening "Catalan"]
[Variation "closed, 5.Nf3"]
[WhiteFideId "2804344"]
[BlackFideId "2804182"]
[EventDate "2015.07.17"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7 5. Bg2 O-O 6. O-O c5 7. dxc5 Bxc5 8. a3
Nc6 9. b4 Be7 10. Nbd2 b6 11. Bb2 Bb7 12. Rc1 Rc8 13. cxd5 Nxd5 14. e4 Nc7 15.
Qb3 Qd7 16. Nc4 Rfd8 17. Rfe1 Qe8 18. h4 Nb5 19. Qe3 Nd6 20. Nxd6 Rxd6 21. Qf4
Bf8 22. h5 h6 23. b5 Na5 24. Ne5 f6 25. Ng6 e5 26. Qg4 Nb3 27. Rcd1 Rcd8 28. Bf1
Nd2 29. Rxd2 Rxd2 30. Bc4+ Kh7 31. Qf5 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.5"]
[White "Palit, Somak"]
[Black "Chatalbashev, Boris"]
[Result "0-1"]
[WhiteTitle "IM"]
[BlackTitle "GM"]
[WhiteElo "2360"]
[BlackElo "2516"]
[ECO "B07"]
[Opening "Pirc"]
[Variation "Byrne variation"]
[WhiteFideId "5010454"]
[BlackFideId "2900440"]
[EventDate "2015.07.17"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 c6 5. Qd2 b5 6. Bd3 Bg7 7. f4 O-O 8. Nf3 Bg4
9. O-O-O Nbd7 10. h3 Bxf3 11. gxf3 Nh5 12. Ne2 c5 13. e5 f6 14. Bh4 c4 15. Be4
Rc8 16. f5 dxe5 17. fxg6 f5 18. Qg5 hxg6 19. Qxg6 fxe4 20. Qxh5 Qe8 21. Qxe8
Rcxe8 22. fxe4 Kh7 23. Rhg1 Rf3 24. dxe5 Nxe5 25. Bg3 Nc6 26. Rd5 Bh6+ 27. Kb1
Rg8 28. Rh5 b4 29. Rh4 Ne5 30. Rh5 Nf7 31. Rf5 Ng5 32. Be1 Re3 33. Bxb4 Rxe2 34.
h4 Nxe4 35. Rf7+ Rg7 36. Rgxg7+ Bxg7 37. a4 c3 38. bxc3 Kg6 39. Rxe7 Nxc3+ 40.
Kc1 Rxe7 41. Bxe7 Nxa4 42. Kd2 Kf5 43. Ke3 Nb2 44. Bc5 a5 45. Kd2 Nc4+ 46. Kd3
Nb2+ 47. Kd2 Ke4 48. Kc1 Nc4 49. h5 a4 50. c3 Bxc3 51. Bf8 Kf5 52. Kc2 Bf6 53.
h6 Kg6 54. Kb1 Bg5 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.6"]
[White "Wilschut, Peter"]
[Black "Petrov, Marian"]
[Result "1/2-1/2"]
[BlackTitle "GM"]
[WhiteElo "2238"]
[BlackElo "2487"]
[ECO "A10"]
[Opening "English opening"]
[WhiteFideId "1007165"]
[BlackFideId "2901773"]
[EventDate "2015.07.17"]

1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. Nf3 d6 6. O-O e5 7. d3 c6 8. Rb1 Re8
9. Bg5 h6 10. Bxf6 Bxf6 11. b4 Bg7 12. b5 c5 13. Ne1 f5 14. Nd5 Nd7 15. Nc2 h5
16. e4 f4 17. gxf4 exf4 18. Nxf4 Ne5 19. Nd5 g5 20. Nce3 g4 21. f4 gxf3 22. Bxf3
Rf8 23. Bg2 Qg5 24. Rxf8+ Bxf8 25. Kh1 Bg7 26. Nf5 Bxf5 27. exf5 Ng4 28. Qe1 Kh8
29. f6 Bxf6 30. Nxf6 Qxf6 31. Qg3 Rg8 32. Rf1 Qe7 33. Be4 Rf8 34. Rxf8+ Qxf8 35.
Bf3 Ne5 36. Be2 Qh6 37. Qh4 Kg7 38. Qe7+ Nf7 39. Qxb7 Qc1+ 40. Kg2 Qg5+ 41. Kf1
Qc1+ 42. Kf2 Qf4+ 43. Qf3 Qxh2+ 44. Qg2+ Qxg2+ 45. Kxg2 d5 46. a4 dxc4 47. dxc4
Nd6 48. a5 Kf6 49. Kf3 h4 50. Kf4 h3 51. b6 axb6 52. axb6 Ke7 53. Ke5 h2 54. Bf3
Nxc4+ 55. Kd5 Nxb6+ 56. Kxc5 Nd7+ 57. Kd4 Kf6 58. Ke3 Ne5 59. Bb7 Kg5 60. Kf2 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.7"]
[White "Das, Arghyadip"]
[Black "Van der Elburg, Freddie"]
[Result "1-0"]
[WhiteTitle "IM"]
[WhiteElo "2457"]
[BlackElo "2185"]
[ECO "B47"]
[Opening "Sicilian"]
[Variation "Taimanov (Bastrikov) variation"]
[WhiteFideId "5003610"]
[BlackFideId "1007904"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. f4 a6 7. Nxc6 Qxc6 8.
Bd3 b5 9. Qe2 Bb7 10. Bd2 Ne7 11. a3 Qc7 12. e5 Nf5 13. O-O-O Be7 14. Rhf1 h5
15. Kb1 g6 16. Ne4 a5 17. Nd6+ Nxd6 18. exd6 Bxd6 19. Bc3 Rg8 20. Bxb5 Bc6 21.
Bxc6 Qxc6 22. Rd3 Be7 23. g3 a4 24. h3 f6 25. f5 gxf5 26. Qxh5+ Kd8 27. Bxf6
Bxf6 28. Qf7 Kc7 29. Qxf6 Kb7 30. Rf4 Ra7 31. Qf7 Rd8 32. Qe7 Qc7 33. Rc3 Qa5
34. Rb4+ Ka8 35. Rc5 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.8"]
[White "Pijpers, Arthur"]
[Black "Kolodkin, Daniil"]
[Result "1-0"]
[WhiteElo "2433"]
[BlackElo "2208"]
[ECO "B94"]
[Opening "Sicilian"]
[Variation "Najdorf, 6.Bg5"]
[WhiteFideId "1019554"]
[BlackFideId "1039776"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nc3 d6 3. Nf3 Nf6 4. d4 cxd4 5. Nxd4 a6 6. Bg5 Nbd7 7. Bc4 Qb6 8.
Bb3 e6 9. Qd2 Be7 10. O-O-O Nc5 11. Rhe1 Qc7 12. f4 h6 13. e5 hxg5 14. exf6 gxf6
15. Nf5 Nxb3+ 16. axb3 exf5 17. Nd5 Qd8 18. Rxe7+ Kf8 19. fxg5 fxg5 20. Rde1 Be6
21. R1xe6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.9"]
[White "Van der Marel, Lambertus"]
[Black "Van Delft, Merijn"]
[Result "1-0"]
[BlackTitle "IM"]
[WhiteElo "2161"]
[BlackElo "2428"]
[ECO "A01"]
[Opening "Nimzovich-Larsen attack"]
[Variation "classical variation"]
[WhiteFideId "1005855"]
[BlackFideId "1004670"]
[EventDate "2015.07.17"]

1. b3 d5 2. Bb2 c6 3. g3 Bf5 4. Bg2 e6 5. Nf3 h6 6. d3 Nf6 7. Nbd2 Be7 8. Nh4
Bh7 9. e4 a5 10. a3 O-O 11. Qe2 a4 12. O-O axb3 13. cxb3 Nbd7 14. Nhf3 Nc5 15.
Ne5 Qb6 16. Bd4 Qa6 17. Qe3 Qb5 18. Rfc1 Ncd7 19. Nxd7 Nxd7 20. a4 Qa5 21. exd5
cxd5 22. Bh3 Bf6 23. Nf3 Qb4 24. Rc7 Rad8 25. Bxf6 Nxf6 26. d4 Ne4 27. Rac1 Rd6
28. Ne5 Ng5 29. Bf1 f6 30. Nd7 Rd8 31. Nc5 Qxd4 32. Nxb7 Be4 33. Bg2 Qb4 34.
Nxd8 Rxd8 35. h4 d4 36. Qf4 e5 37. Qg4 h5 38. Qxh5 Bxg2 39. Kxg2 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.10"]
[White "Polak, Alexander"]
[Black "Erwich, Frank"]
[Result "0-1"]
[BlackTitle "FM"]
[WhiteElo "2114"]
[BlackElo "2361"]
[ECO "C50"]
[Opening "Giuoco Pianissimo"]
[WhiteFideId "1039695"]
[BlackFideId "1007076"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Be3 Bxe3 6. fxe3 d6 7. c3 Ne7 8. O-O
Ng6 9. Nbd2 O-O 10. Qe1 c6 11. d4 Qe7 12. Nh4 Nxh4 13. Qxh4 Be6 14. Bd3 Rfe8 15.
Rf3 Nd7 16. Qh5 Nf6 17. Qh4 Nd7 18. Qh5 f6 19. Nf1 Qf7 20. Qh4 Nf8 21. g4 Ng6
22. Qg3 Qd7 23. h3 d5 24. exd5 Bxd5 25. Bf5 Qd6 26. Rf2 Rad8 27. Bxg6 hxg6 28.
a3 g5 29. Rd1 exd4 30. exd4 Qxg3+ 31. Nxg3 Re3 32. Kh2 Rde8 33. Rdd2 Kf7 34.
Rde2 Bc4 35. Rxe3 Rxe3 36. Nf5 Re6 37. Rf3 g6 38. Ne3 Be2 39. Rg3 Bd3 40. Kg1
Re8 41. Kf2 a5 42. b4 axb4 43. axb4 Ra8 44. Ke1 Ra1+ 45. Kd2 Be4 46. Nc4 Ra2+
47. Kd1 Ke6 48. Na5 f5 49. gxf5+ Kxf5 50. Nxb7 Kf4 51. Rg4+ Ke3 52. Kc1 Rc2+ 53.
Kb1 Rxc3+ 54. Kb2 Rc2+ 55. Kb3 Rh2 56. Rxg5 Kxd4 57. Ka4 Rxh3 58. Nd6 Bc2+ 59.
Ka5 Rh5 60. Nf7 Bb3 61. Rxh5 gxh5 62. Ng5 Bc4 63. Kb6 Bb5 64. Nf3+ Ke3 65. Nh4
Kf4 66. Kc5 Kg4 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.11"]
[White "Visser, Henk-Jan"]
[Black "Van Halderen, Herman"]
[Result "1/2-1/2"]
[WhiteElo "2272"]
[BlackElo "2052"]
[ECO "B90"]
[Opening "Sicilian"]
[Variation "Najdorf, Byrne (English) attack"]
[WhiteFideId "1010204"]
[BlackFideId "1026682"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3
Nbd7 9. Qd2 Be7 10. O-O-O O-O 11. Kb1 b5 12. g4 b4 13. Ne2 a5 14. g5 Nh5 15. Ng3
Nf4 16. h4 a4 17. Nd4 b3 18. Nc6 bxc2+ 19. Qxc2 Qe8 20. Nf5 Bxf5 21. exf5 Nh5
22. f6 gxf6 23. Rg1 Kh8 24. Qe4 Ng7 25. Nxe7 Qxe7 26. gxf6 Nxf6 27. Bh6 Ngh5 28.
Qf5 Rg8 29. Rg5 Ng3 30. Rxg3 Rxg3 31. Bg5 Rxg5 32. hxg5 Ng8 33. Bd3 f6 34. Rh1
Ra7 35. Qc8 f5 36. g6 Rc7 37. Qxf5 h6 38. Qe4 Qg5 39. Qxa4 Qd2 40. Rd1 Qe3 41.
Qe4 Qc5 42. f4 Nf6 43. Qf5 Kg7 44. fxe5 Qxe5 45. a3 Rb7 46. Qxe5 dxe5 47. Bf5 e4
48. Rg1 Re7 49. Kc2 Re5 50. Bh3 Nd5 51. Bf1 e3 52. Bc4 Nf4 53. Kc3 h5 54. b4 h4
55. b5 h3 56. b6 Re7 57. a4 e2 58. Re1 h2 59. Bxe2 Rxe2 60. Rh1 Nd5+ 61. Kd3 Rb2
62. a5 Nxb6 63. axb6 Rxb6 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.13"]
[White "Brantjes, Yme"]
[Black "Overeem, Marc"]
[Result "0-1"]
[BlackTitle "FM"]
[WhiteElo "1937"]
[BlackElo "2216"]
[ECO "B32"]
[Opening "Sicilian defence"]
[WhiteFideId "1039539"]
[BlackFideId "1004972"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Nc3 e6 7. Be3 Qc7 8. f4
Bb4 9. Bd3 Bxc3+ 10. bxc3 d6 11. O-O e5 12. Kh1 Ng4 13. Bg1 exf4 14. Rxf4 Nge5
15. Nd4 a6 16. Nf5 O-O 17. Ne3 Be6 18. Nd5 Bxd5 19. exd5 Ne7 20. Rh4 N7g6 21.
Rh3 Rfe8 22. Bd4 Re7 23. Qh5 h6 24. Rf1 Rae8 25. g4 Nxd3 26. cxd3 Re1 27. Qf5
Rxf1+ 28. Qxf1 Qa5 29. c4 Re1 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.14"]
[White "Kerkvliet, Max"]
[Black "Holwijn, Melvin"]
[Result "1-0"]
[WhiteElo "2186"]
[BlackElo "1952"]
[ECO "E16"]
[Opening "Queen's Indian"]
[Variation "Riumin variation"]
[WhiteFideId "1025546"]
[BlackFideId "1017314"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 Bb7 7. Nc3 O-O 8. O-O
d5 9. cxd5 Nxd5 10. Re1 Nd7 11. e4 Nb4 12. a3 Nc6 13. b4 Nf6 14. Bf4 Qd7 15. Qb3
Nd8 16. Rad1 c6 17. Ne5 Qe8 18. d5 cxd5 19. exd5 Nxd5 20. Nxd5 Bxd5 21. Bxd5
exd5 22. Qxd5 Ne6 23. Nd7 Qc8 24. Nxf8 Nxf4 25. gxf4 Bxf8 26. Rc1 Qg4+ 27. Qg2
Qxg2+ 28. Kxg2 a5 29. Rc4 g6 30. Re5 axb4 31. axb4 Ra4 32. Rb5 Bc5 33. bxc5 Rxc4
34. cxb6 Rc8 35. Kf3 f5 36. Ke3 Kg7 37. Kd4 Kf6 38. b7 Rb8 39. Kd5 h5 40. Rb6+
Ke7 41. Rxg6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.15"]
[White "Van Drunick, Jan-Willem"]
[Black "Heemskerk, Wim"]
[Result "0-1"]
[BlackTitle "FM"]
[WhiteElo "1919"]
[BlackElo "2175"]
[ECO "E71"]
[Opening "King's Indian"]
[Variation "Makagonov system (5.h3)"]
[WhiteFideId "1028650"]
[BlackFideId "1001000"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Be3 Na6 7. Nf3 e5 8. d5 Nh5
9. g3 f5 10. exf5 gxf5 11. Ne2 Nc5 12. Nc3 Qe8 13. Be2 f4 14. Bxc5 dxc5 15. g4
e4 16. Nh4 f3 17. gxh5 Qxh5 18. Nxf3 exf3 19. Bd3 Bf5 20. Qc2 Rae8+ 21. Kd1 Bxd3
22. Qxd3 Rf4 23. Kc2 Rd4 24. Qf1 Qf5+ 25. Kb3 Rd2 26. Rc1 Qg6 27. Na4 Ree2 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.17"]
[White "Dellert, Lena"]
[Black "Wallgren, Ulf"]
[Result "1-0"]
[WhiteElo "1835"]
[BlackElo "2141"]
[ECO "C06"]
[Opening "French"]
[Variation "Tarrasch, closed variation, main line"]
[WhiteFideId "12991511"]
[BlackFideId "1706527"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4
Qb6 9. Nf3 f6 10. exf6 Nxf6 11. O-O Bd6 12. Bf4 Bxf4 13. Nxf4 O-O 14. Qd2 Ne4
15. Qe3 Nxd4 16. Nxd4 Rxf4 17. Qxf4 Qxd4 18. Bxe4 dxe4 19. Rad1 Qb6 20. Rfe1 e5
21. Qxe5 Bg4 22. Qd5+ Be6 23. Qxe4 Bxa2 24. b4 Rf8 25. Qd4 Qb5 26. Re7 Bf7 27.
Qxa7 Qxb4 28. Qxb7 Qc3 29. Qc7 Qb2 30. Qg3 Qc2 31. Rde1 Qb2 32. h3 Qd2 33. Qe3
Qb2 34. Rc1 Qf6 35. Rcc7 Qa1+ 36. Kh2 Qf6 37. f3 Qd6+ 38. Qe5 Qb4 39. Rb7 Qa3
40. Qc7 Qa2 41. Rb8 g6 42. Rxf8+ Kxf8 43. Qd8+ Kg7 44. Qd4+ Kf8 45. Ra7 Qd5 46.
Qh8+ Bg8 47. Qg7+ Ke8 48. Qe7# 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.18"]
[White "Jongste, David"]
[Black "Van der Raaf, Erik"]
[Result "0-1"]
[WhiteElo "1976"]
[BlackElo "2110"]
[ECO "C03"]
[Opening "French"]
[Variation "Tarrasch"]
[WhiteFideId "1042637"]
[BlackFideId "1004115"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. e5 c5 5. c3 Nc6 6. Bd3 Bd7 7. Qg4 Kf8 8. Ne2
cxd4 9. cxd4 Nb4 10. Bb1 Bb5 11. O-O Rc8 12. Re1 Nh6 13. Qf3 Bxe2 14. Qxe2 Nc2
15. Bxc2 Rxc2 16. Qd3 Qc7 17. Nb3 Nf5 18. Be3 Qc4 19. Qd1 Bb4 20. Rf1 Ke7 21.
Rc1 Rc8 22. Qf3 Qb5 23. g4 Nxe3 24. fxe3 Qe8 25. a3 Rxc1 26. Nxc1 Ba5 27. Qf4
Rc2 28. Nd3 Bb6 29. h4 Kf8 30. g5 Rd2 31. Nf2 Bd8 32. Ng4 Rxb2 33. h5 b5 34. g6
hxg6 35. hxg6 b4 36. Qxf7+ Qxf7 37. Rxf7+ Ke8 38. Rxg7 bxa3 39. Nf6+ Bxf6 40.
exf6 a2 41. Rxa7 Rb1+ 42. Kg2 a1=Q 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.19"]
[White "Roozendaal, Marc"]
[Black "Sorensen, Bent"]
[Result "0-1"]
[BlackTitle "FM"]
[WhiteElo "1989"]
[BlackElo "2217"]
[ECO "A40"]
[Opening "Queen's pawn"]
[Variation "Franco-Indian (Keres) defence"]
[WhiteFideId "1003488"]
[BlackFideId "1400410"]
[EventDate "2015.07.17"]

1. d4 e6 2. c4 Bb4+ 3. Nc3 c5 4. a3 Bxc3+ 5. bxc3 Nf6 6. Qc2 Nc6 7. Nf3 d6 8.
Bf4 Nh5 9. Be3 Qa5 10. Nd2 cxd4 11. cxd4 f5 12. g4 fxg4 13. Bg2 O-O 14. O-O e5
15. d5 Ne7 16. c5 Nf5 17. cxd6 Nxd6 18. Bc5 Bf5 19. e4 Rac8 20. Nb3 Qa4 21. Qb2
Bxe4 22. f3 gxf3 23. Qxe5 Qxb3 24. Qe6+ Kh8 25. Qxd6 Rfd8 26. Qe7 Re8 27. Qg5
Qxd5 28. Be3 Qxg5 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.21"]
[White "Halfhide, Sebastian"]
[Black "Erwich, Frans"]
[Result "1-0"]
[WhiteElo "2091"]
[BlackElo "1974"]
[ECO "B80"]
[Opening "Sicilian"]
[Variation "Scheveningen variation"]
[WhiteFideId "1045946"]
[BlackFideId "1004638"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 a6 7. f3 b5 8. Qd2
Nbd7 9. g4 Nb6 10. a4 bxa4 11. Nxa4 Nxa4 12. Rxa4 Bb7 13. g5 Nd7 14. Bd3 Be7 15.
O-O O-O 16. Rfa1 Nc5 17. R4a2 Nxd3 18. cxd3 Rc8 19. Rc1 Rxc1+ 20. Qxc1 Qb8 21.
Nc6 Bxc6 22. Qxc6 Qb3 23. Qxa6 Qd1+ 24. Kg2 f6 25. g6 f5 26. Qc4 Qe2+ 27. Bf2
Rf6 28. exf5 Rxf5 29. Qg4 hxg6 30. h4 e5 31. Qe4 Rf4 32. Qxe2 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.22"]
[White "Corstjens, Rolf"]
[Black "Den Hartog, Marijn"]
[Result "1-0"]
[WhiteElo "1953"]
[BlackElo "2088"]
[ECO "C77"]
[Opening "Ruy Lopez"]
[Variation "Anderssen variation"]
[WhiteFideId "1045687"]
[BlackFideId "1046098"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 b5 7. Bc2 g6 8. O-O Bg7
9. b4 O-O 10. a4 Rb8 11. axb5 axb5 12. Nbd2 Re8 13. Nb3 h6 14. Bd2 Be6 15. Qc1
Kh7 16. Qb2 Bf8 17. Ra6 Qd7 18. Rfa1 Rbd8 19. d4 Bxb3 20. Qxb3 exd4 21. Rxc6
Qxc6 22. Qxf7+ Bg7 23. Nh4 Qd7 24. Qxg6+ Kg8 25. Nf5 Re6 26. Bb3 d5 27. exd5 Rd6
28. Bxh6 Ne8 29. Nxd6 cxd6 30. cxd4 Kf8 31. Re1 Ra8 32. Bc2 Bxh6 33. Qxh6+ Kg8
34. Qe6+ Qxe6 35. dxe6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.23"]
[White "Ratsma, Rosa"]
[Black "Veenendaal, Loek"]
[Result "1-0"]
[WhiteElo "2088"]
[BlackElo "1993"]
[ECO "B10"]
[Opening "Caro-Kann defence"]
[WhiteFideId "1033662"]
[BlackFideId "1049259"]
[EventDate "2015.07.17"]

1. e4 c6 2. Nc3 d5 3. Qe2 d4 4. Nd1 e5 5. d3 c5 6. f4 Bd6 7. g3 Nc6 8. Nf3 f6 9.
Bg2 Be6 10. O-O Qc7 11. f5 Bf7 12. Kh1 Nb4 13. b3 b5 14. c3 Nc6 15. Bb2 Nge7 16.
Nf2 O-O 17. g4 dxc3 18. Bxc3 Nd4 19. Bxd4 exd4 20. Rac1 Nc6 21. e5 fxe5 22. Ne4
c4 23. bxc4 bxc4 24. dxc4 Ba3 25. Rcd1 Rab8 26. Nfg5 Rb2 27. Qd3 Be7 28. Qh3 h6
29. Nxf7 Rxf7 30. f6 Bxf6 31. Nxf6+ Rxf6 32. Rxf6 gxf6 33. Qxh6 Rf2 34. Bd5+ 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.24"]
[White "De Mooij, Marco"]
[Black "Van der Scheer, Henk"]
[Result "0-1"]
[WhiteElo "1929"]
[BlackElo "2049"]
[ECO "B70"]
[Opening "Sicilian"]
[Variation "dragon variation"]
[WhiteFideId "1031007"]
[BlackFideId "1051458"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bg5 Bg7 7. Bb5+ Bd7 8.
Qe2 Nc6 9. Bxc6 bxc6 10. O-O-O O-O 11. e5 dxe5 12. Nxc6 Bxc6 13. Rxd8 Rfxd8 14.
f3 Rab8 15. Rd1 Rdc8 16. Bxf6 Bxf6 17. Ne4 Bg7 18. Qa6 Bh6+ 19. Kb1 Be3 20. Qa3
Bd4 21. b3 Rc7 22. Qa5 Rbc8 23. c4 Bd7 24. Rd3 Be6 25. Kc2 h6 26. Kd2 f5 27. Nc3
Kf8 28. f4 Bxc4 29. bxc4 Rxc4 30. fxe5 Bxc3+ 31. Rxc3 Rxc3 32. Qxa7 Rc2+ 33. Kd3
Rxg2 34. Qb7 Rd8+ 35. Ke3 Rxa2 36. Qb6 Rad2 37. e6 R8d6 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.19"]
[Round "3.27"]
[White "Vreeburg, Jan"]
[Black "Bebchuk, Leonid"]
[Result "1-0"]
[WhiteElo "1901"]
[BlackElo "2072"]
[ECO "D37"]
[Opening "QGD"]
[Variation "classical variation (5.Bf4)"]
[WhiteFideId "1019066"]
[BlackFideId "2803305"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Be7 5. Bf4 O-O 6. e3 c6 7. Bd3 Nbd7 8. Qc2
dxc4 9. Bxc4 Nb6 10. Bb3 Nbd5 11. Bg3 b6 12. O-O Bb7 13. Rfd1 Nh5 14. Be5 f6 15.
Nxd5 exd5 16. Bg3 Nxg3 17. hxg3 Kh8 18. Rac1 Bd6 19. Qd3 Re8 20. Bc2 g6 21. Nh4
Qe7 22. Qe2 f5 23. Ba4 Rac8 24. Bc2 Qf6 25. Nf3 Rc7 26. Qd3 Rce7 27. Ba4 b5 28.
Bc2 Bc8 29. a4 b4 30. a5 Bc7 31. Ba4 Re6 32. Rc5 g5 33. Rdc1 Bb7 34. a6 Ba8 35.
Rxd5 cxd5 36. Bxe8 Qd8 37. Bf7 Rc6 38. Rxc6 Bxc6 39. Qxf5 Qd7 40. Qf6# 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.1"]
[White "Howell, David W L"]
[Black "Nikolic, Predrag"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2698"]
[BlackElo "2601"]
[ECO "C07"]
[Opening "French"]
[Variation "Tarrasch, open variation"]
[WhiteFideId "410608"]
[BlackFideId "14400014"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nf6 5. e5 Nfd7 6. c3 Be7 7. Bd3 b6 8. O-O
Ba6 9. Ne1 Bxd3 10. Nxd3 Nc6 11. Qg4 g6 12. Nf3 c4 13. Nde1 h6 14. Nc2 Qc7 15.
Bd2 O-O-O 16. h4 Kb8 17. b3 Na5 18. Rfb1 Ka8 19. b4 Nb7 20. a4 a6 21. Ne3 Rdg8
22. Qh3 Nd8 23. Ng4 g5 24. h5 Re8 25. Re1 Nc6 26. Re2 Kb7 27. Rae1 b5 28. a5 Rc8
29. Rc1 Qd8 30. Re3 Qg8 31. Nfh2 Qh7 32. Qf3 Rce8 33. Qe2 Bd8 34. Rf3 Rhf8 35.
Re1 Ne7 36. Qd1 Nf5 37. Qb1 Rh8 38. Nf1 Ref8 39. Nfe3 Ng7 40. Qxh7 Rxh7 41. Rh3
f5 42. exf6 Bxf6 43. Nf1 Bd8 44. Nfh2 Bc7 45. Rf3 Bxh2+ 46. Nxh2 Rxf3 47. Nxf3
Nf6 48. g3 g4 49. Nh2 Kc8 50. Bf4 Kd7 51. Be5 Ngxh5 52. Kf1 Rg7 53. Ke2 Rg8 54.
Rh1 Ne4 55. Nxg4 Rxg4 56. Rxh5 Rg6 57. Rh1 Nxc3+ 58. Ke3 Na2 59. Rb1 Rg8 60. Rh1
c3 61. Kd3 Rc8 62. Rxh6 Nxb4+ 63. Ke2 Na2 64. Kd3 b4 65. Kc2 Rc4 66. Bf4 Rxd4
67. Rh7+ Ke8 68. Kb3 e5 69. Bg5 c2 70. Kxa2 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.2"]
[White "Erwich, Frank"]
[Black "Postny, Evgeny"]
[Result "0-1"]
[WhiteTitle "FM"]
[BlackTitle "GM"]
[WhiteElo "2361"]
[BlackElo "2642"]
[ECO "B01"]
[Opening "Scandinavian gambit"]
[WhiteFideId "1007076"]
[BlackFideId "2804344"]
[EventDate "2015.07.17"]

1. e4 c6 2. c4 d5 3. exd5 Nf6 4. Nc3 cxd5 5. cxd5 Nxd5 6. Nf3 Nc6 7. d4 Be6 8.
Ng5 Qb6 9. Nxe6 fxe6 10. Be2 g6 11. O-O Bg7 12. Bg4 Nxd4 13. Qa4+ Qc6 14. Qxc6+
bxc6 15. Bd2 Rb8 16. Na4 h5 17. Bd1 Kf7 18. Rc1 Rhd8 19. Re1 Nb4 20. Bxb4 Rxb4
21. a3 Rb5 22. Be2 Ra5 23. Bd1 Rf5 24. Nc5 a5 25. Rc4 Rb8 26. b4 axb4 27. axb4
Ra8 28. Nb3 Rf4 29. Rc5 Ra2 30. Nc1 Rd2 31. Rf1 Nf5 32. Nb3 Rb2 33. Rxc6 Rxb4
34. Nc5 Nd4 35. Ra6 Rb1 36. Ra4 R4b2 37. Ne4 Rc1 38. Ng5+ Kg8 39. Ra8+ Bf8 40.
Nf3 Rbb1 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.3"]
[White "Tiviakov, Sergei"]
[Black "Das, Arghyadip"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "IM"]
[WhiteElo "2639"]
[BlackElo "2457"]
[ECO "C42"]
[Opening "Petrov's defence"]
[WhiteFideId "1008013"]
[BlackFideId "5003610"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Bd3 Nf6 6. h3 Be7 7. O-O O-O 8. c3
b6 9. Bc2 Bb7 10. d4 Nbd7 11. Re1 Re8 12. Bf4 Bf8 13. Nbd2 Rxe1+ 14. Qxe1 g6 15.
Bb3 Qe7 16. Qf1 Bg7 17. a4 a6 18. Qd3 Nd5 19. Re1 Qf8 20. Bg5 N7f6 21. Nf1 Re8
22. Rxe8 Qxe8 23. Ng3 b5 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.4"]
[White "Chatalbashev, Boris"]
[Black "Pijpers, Arthur"]
[Result "1-0"]
[WhiteTitle "GM"]
[WhiteElo "2516"]
[BlackElo "2433"]
[ECO "A07"]
[Opening "Reti"]
[Variation "King's Indian attack"]
[WhiteFideId "2900440"]
[BlackFideId "1019554"]
[EventDate "2015.07.17"]

1. Nf3 d5 2. g3 g6 3. c4 dxc4 4. Na3 Bg7 5. Nxc4 Nf6 6. Bg2 O-O 7. d3 Nc6 8. Bd2
Nd5 9. Rc1 e5 10. O-O Re8 11. a3 h6 12. b4 a6 13. Qc2 Bg4 14. Na5 Nxa5 15. bxa5
c6 16. Rb1 Rb8 17. Rb3 Nc7 18. a4 Ne6 19. e3 Qd7 20. Rfb1 Nd8 21. Bc3 c5 22. Nd2
Be6 23. Rb6 Rc8 24. Nc4 Bxc4 25. dxc4 Rc7 26. Rd1 Qe7 27. Bd5 Kh7 28. h4 h5 29.
Qb2 Qd7 30. Rb1 Qxa4 31. Rd6 Bf8 32. Bxe5 Bxd6 33. Bxd6 Rc8 34. Qf6 Qc2 35. Rxb7
Nxb7 36. Qxf7+ Kh8 37. Qf6+ Kh7 38. Qf7+ Kh8 39. Qxb7 Qc3 40. Qxa6 Rf8 41. Bf4
Qg7 42. Qb6 Rxf4 43. gxf4 Rc7 44. a6 Qa1+ 45. Kg2 Rg7 46. Bb7 Qd1 47. Qe6 Qa1
48. Qe5 Qd1 49. Qg5 Qa1 50. Qh6+ Kg8 51. Bd5+ Kf8 52. a7 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.5"]
[White "Petrov, Marian"]
[Black "Van der Marel, Lambertus"]
[Result "0-1"]
[WhiteTitle "GM"]
[WhiteElo "2487"]
[BlackElo "2161"]
[ECO "C50"]
[Opening "Giuoco Pianissimo"]
[WhiteFideId "2901773"]
[BlackFideId "1005855"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. O-O O-O 7. Bb3 a6 8. h3 Ba7
9. Re1 Ne7 10. Nbd2 Ng6 11. Nf1 Be6 12. Ng3 h6 13. d4 Nh7 14. Be3 c5 15. Nf5 Qf6
16. Bc2 Rfd8 17. Nh2 Bxf5 18. exf5 Ngf8 19. Qh5 cxd4 20. cxd4 exd4 21. Bd2 d3
22. Bb3 d5 23. Bc3 Qg5 24. Qf3 Nf6 25. Ng4 Ne4 26. Rxe4 dxe4 27. Qxe4 d2 28. h4
Qh5 29. Bd1 Qxh4 30. Nf6+ Qxf6 31. Bxf6 gxf6 32. Qxb7 Rac8 33. Qxa7 Rc1 34. Qe7
Rd7 35. Qe2 Rxa1 36. Kh2 Rxa2 37. Qg4+ Kh7 38. Qb4 Ra1 39. Bh5 Kg7 40. Qg4+ Ng6 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.6"]
[White "Heemskerk, Wim"]
[Black "Milov, Leonid"]
[Result "0-1"]
[WhiteTitle "FM"]
[BlackTitle "GM"]
[WhiteElo "2175"]
[BlackElo "2462"]
[ECO "A10"]
[Opening "English"]
[Variation "Anglo-Dutch defense"]
[WhiteFideId "1001000"]
[BlackFideId "14101068"]
[EventDate "2015.07.17"]

1. c4 f5 2. g3 Nf6 3. Bg2 e5 4. d4 Bb4+ 5. Bd2 Bxd2+ 6. Qxd2 d6 7. dxe5 dxe5 8.
Qxd8+ Kxd8 9. Nc3 c6 10. Nf3 Re8 11. O-O Kc7 12. Rfd1 a5 13. Rac1 Nbd7 14. Na4
Nb6 15. Nc5 Nfd7 16. Nxd7 Nxd7 17. Ng5 Nf6 18. Nf7 Re7 19. Nd6 Be6 20. a3 a4 21.
e4 fxe4 22. Nxe4 Nd7 23. Re1 h6 24. Re3 Bf5 25. c5 Ra5 26. Nd6 Be6 27. Ne4 Bd5
28. Rec3 Bxe4 29. Bxe4 Nf6 30. Bf5 e4 31. Rc4 Re5 32. Bg6 e3 33. fxe3 Rxe3 34.
Bc2 Re2 35. Bxa4 Rxb2 36. Re1 Rd2 37. Re3 Nd5 38. Rf3 Nf6 39. Re3 Ra8 40. Re7+
Rd7 41. Re3 Re8 42. Rxe8 Nxe8 43. Bc2 Nf6 44. g4 Rd2 45. Bf5 Nd5 46. Be6 Nf6 47.
h4 Re2 48. Bf5 Nd5 49. Bd3 Ra2 50. a4 Ra3 51. Rd4 g5 52. hxg5 hxg5 53. Kf2 Nf4
54. Bf5 Nd5 55. Bd3 Rc3 56. Bc4 Nf6 57. Ke2 Nd7 58. Kd2 Ra3 59. Rd6 Rxa4 60. Kc3
Nxc5 61. Rg6 b5 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.7"]
[White "De Jong, Jan-Willem"]
[Black "Overeem, Marc"]
[Result "1-0"]
[WhiteTitle "IM"]
[BlackTitle "FM"]
[WhiteElo "2448"]
[BlackElo "2216"]
[ECO "E73"]
[Opening "King's Indian"]
[Variation "Averbakh system"]
[WhiteFideId "1008641"]
[BlackFideId "1004972"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 Na6 7. Nf3 h6 8. Be3 e5
9. O-O Ng4 10. Bc1 exd4 11. Nxd4 Qh4 12. h3 Ne5 13. f4 Nc6 14. Nf3 Qe7 15. Nd5
Qxe4 16. Bd3 Qe8 17. f5 gxf5 18. Bxh6 Ncb4 19. Re1 Qd8 20. Ne7+ Kh8 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.8"]
[White "Gindi, Shachar"]
[Black "Kerkvliet, Max"]
[Result "1-0"]
[WhiteTitle "FM"]
[WhiteElo "2336"]
[BlackElo "2186"]
[ECO "A14"]
[Opening "English"]
[Variation "Neo-Catalan declined"]
[WhiteFideId "2804182"]
[BlackFideId "1025546"]
[EventDate "2015.07.17"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. O-O O-O 6. b3 b6 7. Bb2 Bb7 8. e3 c5
9. Nc3 Nc6 10. cxd5 exd5 11. d4 cxd4 12. Nxd4 Nxd4 13. Qxd4 Bc5 14. Qd3 Qd7 15.
Rfd1 Rfd8 16. Ne2 Qd6 17. Nd4 Bxd4 18. Qxd4 Qe7 19. Rd2 Re8 20. a4 Qe6 21. Bc3
Rac8 22. a5 bxa5 23. Rxa5 Qb6 24. Rxa7 Qxb3 25. Bb2 Rc4 26. Qd3 Qxd3 27. Rxd3
Rb4 28. Rd2 Rc8 29. f3 Ra8 30. Rxa8+ Bxa8 31. e4 Rb5 32. f4 h6 33. Bxf6 gxf6 34.
exd5 Rb8 35. d6 Kg7 36. d7 Bxg2 37. Kxg2 Rd8 38. Kh3 f5 39. Kh4 f6 40. Kh5 Kf7
41. h3 Kg7 42. Rd3 Kf7 43. h4 Kg7 44. g4 Kh7 45. Rd1 Kg7 46. Rd5 Kf7 47. Rxf5
Kg7 48. Rd5 Kf7 49. g5 Ke6 50. Rd1 hxg5 51. hxg5 Kf5 52. Kh6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.9"]
[White "Dellert, Lena"]
[Black "Wilschut, Peter"]
[Result "1/2-1/2"]
[WhiteElo "1835"]
[BlackElo "2238"]
[ECO "C06"]
[Opening "French"]
[Variation "Tarrasch, closed variation, main line"]
[WhiteFideId "12991511"]
[BlackFideId "1007165"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4
f6 9. exf6 Qxf6 10. Nf3 h6 11. Qc2 Bb4+ 12. Bd2 O-O 13. Bxb4 Nxb4 14. Qb3 Nxd3+
15. Qxd3 Nb8 16. O-O Nc6 17. Nc3 Bd7 18. Rae1 Rac8 19. Re3 Be8 20. Rfe1 Bg6 21.
Qd2 Bf5 22. Ne5 Nxe5 23. Rxe5 Qh4 24. f3 h5 25. Qf2 Qf6 26. Qe3 Rc4 27. b3 Rc6
28. Ne2 Rc2 29. Ng3 Qg6 30. Re2 Rxe2 31. Qxe2 Rc8 32. Nxf5 exf5 33. Rxd5 Rc1+
34. Kf2 f4 35. Rc5 Rxc5 36. dxc5 Qg5 37. Qe8+ Kh7 38. Qe4+ Kh8 39. b4 Qh4+ 40.
Kg1 Kg8 41. g3 Qd8 42. gxf4 h4 43. Kg2 Qd2+ 44. Kh3 Qxa2 45. f5 Qf2 46. Qg4 Qf1+
47. Kxh4 Qf2+ 48. Kh3 Qf1+ 49. Qg2 Qd3 50. Qg4 Qf1+ 51. Kh4 Qf2+ 52. Kg5 Qxh2
53. Qe4 Qg3+ 54. Qg4 Qh2 55. Qc4+ Kf8 56. Kg4 a6 57. Qd4 Qg2+ 58. Kf4 Qh2+ 59.
Ke4 Qe2+ 60. Kf4 Qh2+ 61. Ke3 Qg1+ 62. Ke4 Qe1+ 63. Kd5 Qe2 64. Qe4 Qb5 65. f4
Qd7+ 66. Kc4 Qb5+ 67. Kc3 a5 68. bxa5 Qxc5+ 69. Kd3 Qxa5 70. Qxb7 Qxf5+ 71. Qe4
Qb5+ 72. Kd4 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.10"]
[White "Van Delft, Merijn"]
[Black "Halfhide, Sebastian"]
[Result "1/2-1/2"]
[WhiteTitle "IM"]
[WhiteElo "2428"]
[BlackElo "2091"]
[ECO "C78"]
[Opening "Ruy Lopez"]
[Variation "Archangelsk (counterthrust) variation"]
[WhiteFideId "1004670"]
[BlackFideId "1045946"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7 7. d3 Bc5 8. Nc3
d6 9. a3 h6 10. Be3 O-O 11. Qd2 Bc8 12. a4 Rb8 13. axb5 axb5 14. h3 Be6 15. Bxe6
fxe6 16. Bxc5 dxc5 17. Ne2 Qd6 18. Qe3 Nd4 19. Nfxd4 cxd4 20. Qd2 Nh5 21. g3 Ra8
22. Kg2 Kh7 23. Ng1 Qe7 24. Qe2 Qg5 25. Qg4 Qxg4 26. hxg4 Nf6 27. g5 Ng4 28.
Rxa8 Rxa8 29. gxh6 Kxh6 30. Nf3 g5 31. Rb1 Ra2 32. Nd2 Nf6 33. Nb3 Nd7 34. f4 c5
35. fxe5 Kg6 36. Kh3 Kg7 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.11"]
[White "Van Halderen, Herman"]
[Black "Palit, Somak"]
[Result "1-0"]
[BlackTitle "IM"]
[WhiteElo "2052"]
[BlackElo "2360"]
[ECO "A40"]
[Opening "Polish defence"]
[WhiteFideId "1026682"]
[BlackFideId "5010454"]
[EventDate "2015.07.17"]

1. d4 b5 2. e4 Bb7 3. Bxb5 Bxe4 4. Nf3 e6 5. O-O Nf6 6. Nc3 Bb7 7. Re1 Be7 8.
Bf4 O-O 9. Bd3 d6 10. Ng5 Nbd7 11. Re3 h6 12. Nge4 Nxe4 13. Nxe4 f5 14. Ng3 Bg5
15. Bxg5 Qxg5 16. Rxe6 f4 17. Rg6 Qh4 18. Nf5 Rxf5 19. Bxf5 Nf8 20. Rg4 Qf6 21.
Rxf4 Kh8 22. d5 Ng6 23. Rb4 Qxf5 24. Rxb7 Rf8 25. Qd2 Nf4 26. f3 Qg5 27. Kh1 Re8
28. g3 Qxd5 29. Qxd5 Nxd5 30. c4 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.12"]
[White "Van der Scheer, Henk"]
[Black "Visser, Henk-Jan"]
[Result "0-1"]
[WhiteElo "2049"]
[BlackElo "2272"]
[ECO "A31"]
[Opening "English"]
[Variation "symmetrical, Benoni formation"]
[WhiteFideId "1051458"]
[BlackFideId "1010204"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. Nf3 c5 3. c4 g6 4. Nc3 Bg7 5. e3 O-O 6. Be2 cxd4 7. exd4 d5 8. O-O
Nc6 9. h3 dxc4 10. Bxc4 Na5 11. Be2 Be6 12. Be3 Nd5 13. Nxd5 Bxd5 14. b3 Nc6 15.
Rc1 Rc8 16. Qd2 Rc7 17. Ne5 e6 18. Rfd1 Qa8 19. Bh6 Qd8 20. Bxg7 Kxg7 21. Qf4
Qf6 22. Nxg6 Qxg6 23. Bf1 Rfc8 24. Rc3 Kf8 25. Rg3 Qf5 26. Qd6+ Re7 27. Bd3 Qh5
28. Rg4 f5 29. Qf4 Rf7 30. Qd6+ Ne7 31. Qe5 Ng6 32. Qd6+ Kg8 33. Be2 fxg4 34.
Bxg4 Qg5 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.13"]
[White "Bishoen, Bob"]
[Black "Johansson, Gunnar"]
[Result "0-1"]
[WhiteElo "1968"]
[BlackElo "2223"]
[ECO "A09"]
[Opening "Reti opening"]
[WhiteFideId "1054104"]
[BlackFideId "1703501"]
[EventDate "2015.07.17"]

1. Nf3 d5 2. c4 c6 3. g3 g6 4. b3 Bg7 5. d4 Nf6 6. Bg2 O-O 7. O-O Ne4 8. Bb2 Be6
9. Nbd2 f5 10. Rc1 Nd7 11. Nxe4 fxe4 12. Ne5 Nxe5 13. dxe5 Qa5 14. cxd5 cxd5 15.
a3 Rac8 16. Qd4 Qb5 17. Qe3 Bd7 18. f3 exf3 19. exf3 e6 20. Qxa7 Qxb3 21. Qf2
Rc6 22. Rxc6 bxc6 23. Bd4 Ra8 24. Bc5 Bxe5 25. Qe2 Qc3 26. Qf2 Rxa3 27. f4 Bg7
28. Re1 Ra5 29. Bb6 Rb5 30. Be3 Rb2 31. Re2 Rb1+ 32. Bf1 d4 33. Bd2 Qa1 34. Re1
c5 35. Bc4 Rxe1+ 36. Bxe1 Kf8 37. Qe2 Ke7 38. g4 Qc1 39. Qe4 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.14"]
[White "Sorensen, Bent"]
[Black "Ratsma, Rosa"]
[Result "1-0"]
[WhiteTitle "FM"]
[WhiteElo "2217"]
[BlackElo "2088"]
[ECO "A05"]
[Opening "Reti"]
[Variation "King's Indian attack"]
[WhiteFideId "1400410"]
[BlackFideId "1033662"]
[EventDate "2015.07.17"]

1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. c4 c5 6. Bg2 Nc6 7. O-O d6 8. d4
cxd4 9. Nxd4 Bd7 10. Nc3 Qa5 11. Nd5 Nxd5 12. Bxd5 a6 13. Nxc6 bxc6 14. Bxg7
Kxg7 15. Bg2 Qc5 16. Qd2 a5 17. Rfd1 Rfb8 18. Rab1 Ra6 19. Qc3+ Kg8 20. e4 Be6
21. Bf1 Rab6 22. Bd3 a4 23. Bc2 Qb4 24. Qe3 a3 25. Rbc1 R6b7 26. e5 d5 27. cxd5
cxd5 28. Bb1 Qb6 29. Qc5 Qxc5 30. Rxc5 Rb5 31. Rdc1 Kf8 32. Kf1 Ke8 33. Ke2 Kd8
34. Bd3 Rxc5 35. Rxc5 Ra8 36. Kd2 d4 37. Bc4 Bf5 38. Rd5+ Kc7 39. Rxd4 Ra5 40.
Rd5 Ra8 41. Kc3 h5 42. b4 h4 43. Kb3 e6 44. Rd4 hxg3 45. hxg3 g5 46. b5 Kb6 47.
Kb4 Rc8 48. Rd6+ Kb7 49. Rd7+ Kb6 50. Rxf7 Rd8 51. Re7 Rd4 52. f3 g4 53. f4 Re4
54. Rd7 Re3 55. Rd6+ Kb7 56. Kc5 Rxg3 57. b6 Rc3 58. Rd7+ Kb8 59. Kb4 Rh3 60.
Bf1 Rh8 61. Bg2 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.15"]
[White "Kolodkin, Daniil"]
[Black "Vreeburg, Jan"]
[Result "0-1"]
[WhiteElo "2208"]
[BlackElo "1901"]
[ECO "B08"]
[Opening "Pirc"]
[Variation "classical system, 5.Be2"]
[WhiteFideId "1039776"]
[BlackFideId "1019066"]
[EventDate "2015.07.17"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 Nf6 5. Be2 O-O 6. O-O e5 7. Bg5 Qe8 8. Re1
c6 9. d5 c5 10. Nd2 h6 11. Be3 Qe7 12. Nc4 Nbd7 13. Qd2 Kh7 14. a4 Nb6 15. Na3
Bd7 16. a5 Na4 17. Nxa4 Bxa4 18. f3 Bd7 19. Nc4 Ng8 20. b4 Bb5 21. bxc5 dxc5 22.
Reb1 Bxc4 23. Bxc4 Rfd8 24. Rb5 Rac8 25. Rab1 Rd7 26. Qf2 Bf8 27. Bf1 Nf6 28. g3
Rcc7 29. Bh3 Rd8 30. R1b3 Rb8 31. Rc3 b6 32. Rcb3 Rcb7 33. d6 Qxd6 34. Bxc5 Qd1+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.16"]
[White "Van der Elburg, Freddie"]
[Black "Knudsen, Martin"]
[Result "1/2-1/2"]
[WhiteElo "2185"]
[BlackElo "2026"]
[ECO "A03"]
[Opening "Bird's opening"]
[WhiteFideId "1007904"]
[BlackFideId "1406523"]
[EventDate "2015.07.17"]

1. f4 d5 2. Nf3 c5 3. g3 Nc6 4. Bg2 g6 5. O-O Bg7 6. d3 Nf6 7. Qe1 O-O 8. c3 d4
9. Na3 Rb8 10. Bd2 e5 11. fxe5 Ng4 12. cxd4 cxd4 13. Bg5 Qd7 14. Rc1 Ngxe5 15.
Nxe5 Bxe5 16. Nc4 Bc7 17. Bf6 Bd8 18. Ne5 Qe6 19. Nxc6 bxc6 20. Bxd4 Qxa2 21.
Ra1 Qe6 22. Rxa7 Bb6 23. Bxb6 Rxb6 24. Qd2 Rxb2 25. Qxb2 Qe3+ 26. Kh1 Qxa7 27.
Bxc6 Bh3 28. Rb1 Qe3 29. Ra1 Qf2 30. Bf3 Re8 31. Qb7 h5 32. Qa7 Re3 33. Qd4 Kh7
34. Qd5 Be6 35. Qb7 h4 36. gxh4 Qxh4 37. Rf1 Re5 38. Qa7 Rb5 39. d4 Qh3 40. Bg2
Qe3 41. Bf3 Rf5 42. Qa1 Bc4 43. Qd1 Bb3 44. Qd3 Qxd3 45. exd3 Kg7 46. Kg2 Bc2
47. Be2 Rxf1 48. Bxf1 Kf6 49. Kf3 Ke6 50. h4 f6 51. Bh3+ Kd6 52. Ke3 Bd1 53. Bg2 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.18"]
[White "Van der Raaf, Erik"]
[Black "Corstjens, Rolf"]
[Result "0-1"]
[WhiteElo "2110"]
[BlackElo "1953"]
[ECO "C02"]
[Opening "French"]
[Variation "advance, Milner-Barry gambit"]
[WhiteFideId "1004115"]
[BlackFideId "1045687"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. cxd4 Bd7 8. O-O
Nxd4 9. Nbd2 Nxf3+ 10. Nxf3 Ne7 11. b4 Nc6 12. a3 a5 13. b5 Nd4 14. Ng5 g6 15.
Be3 Bc5 16. Rc1 Nb3 17. Rxc5 Nxc5 18. Qf3 O-O 19. Nxh7 Kxh7 20. Qh3+ Kg8 21. Bg5
f5 22. exf6 e5 23. Qh6 Rxf6 24. Bxf6 Qxf6 25. Bxg6 Qg7 26. Qh5 Ne6 27. g3 Bxb5
28. Re1 Ra6 29. Rxe5 Nf4 30. gxf4 Rxg6+ 31. Rg5 Rxg5+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.21"]
[White "Hawkins, James N H"]
[Black "Oosterom, Erik"]
[Result "0-1"]
[WhiteElo "1942"]
[BlackElo "2043"]
[ECO "D04"]
[Opening "Queen's pawn game"]
[WhiteFideId "409928"]
[BlackFideId "1003470"]
[EventDate "2015.07.17"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Nbd2 e6 5. Be2 h6 6. O-O Nbd7 7. b3 Bd6 8. Bb2
O-O 9. Ne5 c5 10. f4 cxd4 11. exd4 Rc8 12. c4 dxc4 13. Ndxc4 Nb6 14. Ne3 Be4 15.
Bf3 Nbd5 16. Nxd5 exd5 17. Rf2 Qe7 18. Bxe4 Nxe4 19. Rc2 Qh4 20. Nd3 Bxf4 21.
Nxf4 Qxf4 22. Bc1 Qf5 23. Be3 Rxc2 24. Qxc2 Rc8 25. Qd3 Nd6 26. Qxf5 Nxf5 27.
Rc1 Rxc1+ 28. Bxc1 Nxd4 29. Kf2 f5 30. Ke3 Ne6 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.22"]
[White "Brantjes, Yme"]
[Black "Van Briemen, Willem"]
[Result "0-1"]
[WhiteElo "1937"]
[BlackElo "2041"]
[ECO "C15"]
[Opening "French"]
[Variation "Winawer (Nimzovich) variation"]
[WhiteFideId "1039539"]
[BlackFideId "1026445"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Bd3 Nc6 6. a3 Bxc3+ 7. bxc3 Nge7 8.
Qf3 Be6 9. Ne2 Qd7 10. O-O Bf5 11. Ng3 Bxd3 12. cxd3 O-O 13. h4 Rfe8 14. h5 h6
15. a4 Na5 16. Ba3 b6 17. Rfe1 Rad8 18. Ra2 Nc8 19. Rae2 Rxe2 20. Rxe2 Qxa4 21.
Bb4 Nb7 22. Nf5 Nbd6 23. Bxd6 Nxd6 24. Re7 Nxf5 25. Qxf5 Rf8 26. Rxc7 a5 27. c4
dxc4 28. dxc4 Qd1+ 29. Kh2 Qxd4 30. Rc8 Qd6+ 31. Kg1 Qd1+ 32. Kh2 Qd6+ 33. Kg1
Rd8 34. c5 bxc5 35. Rxc5 a4 36. Ra5 Qb4 37. g3 a3 38. Ra7 Qb3 39. Qa5 Rd1+ 40.
Kg2 Qd3 41. Qc5 Qe4+ 42. f3 Qe2+ 43. Qf2 Qd3 44. Qc5 Qf1+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.20"]
[Round "4.24"]
[White "Den Hartog, Marijn"]
[Black "Van der Meer, Kees"]
[Result "1-0"]
[WhiteElo "2088"]
[BlackElo "2038"]
[ECO "B48"]
[Opening "Sicilian"]
[Variation "Taimanov variation"]
[WhiteFideId "1046098"]
[BlackFideId "1007793"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be3 a6 7. Qf3 Ne5 8. Qg3
h5 9. O-O-O h4 10. Qh3 b5 11. f4 Nc4 12. Bxc4 Qxc4 13. Rhf1 Bb7 14. f5 e5 15.
Nb3 Qc7 16. Kb1 Rc8 17. f6 Nxf6 18. Rxf6 gxf6 19. Bb6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.1"]
[White "Van der Marel, Lambertus"]
[Black "Howell, David W L"]
[Result "0-1"]
[BlackTitle "GM"]
[WhiteElo "2161"]
[BlackElo "2698"]
[ECO "A01"]
[Opening "Nimzovich-Larsen attack"]
[Variation "modern variation"]
[WhiteFideId "1005855"]
[BlackFideId "410608"]
[EventDate "2015.07.17"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 Bd6 5. f4 f6 6. fxe5 fxe5 7. Nf3 Nh6 8. O-O
O-O 9. Bxc6 bxc6 10. Nxe5 Bf5 11. Qh5 Bxe5 12. Bxe5 Bg4 13. Rxf8+ Kxf8 14. Bxg7+
Kxg7 15. Qe5+ Qf6 16. Qxc7+ Kh8 17. Nc3 Rf8 18. Qg3 Bh5 19. h3 Bg6 20. Rc1 d4
21. Ne2 Nf5 22. Qf4 dxe3 23. dxe3 Qe7 24. Rf1 Re8 25. Rf3 Nxe3 26. Qd4+ Qg7 27.
c3 Nxg2 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.2"]
[White "Postny, Evgeny"]
[Black "Chatalbashev, Boris"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2642"]
[BlackElo "2516"]
[ECO "A56"]
[Opening "Benoni defence"]
[WhiteFideId "2804344"]
[BlackFideId "2900440"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 O-O 6. Nf3 e6 7. e5 Ng4 8. Ng5 Nxe5
9. f4 f6 10. Nge4 Nf7 11. Nxc5 Qe7 12. Be3 f5 13. Qd2 Bxc3 14. Qxc3 exd5 15.
O-O-O b6 16. Nb3 Bb7 17. Re1 Na6 18. Bc5 d4 19. Bxe7 dxc3 20. Bxf8 cxb2+ 21.
Kxb2 Kxf8 22. h4 Rc8 23. h5 Nc5 24. hxg6 hxg6 25. Nxc5 Rxc5 26. Rh3 Be4 27. Rd1
d6 28. Ra3 Rc7 29. g3 Ke7 30. Bd3 Bxd3 31. Rdxd3 Nh6 32. Ra6 Ng4 33. Rda3 Rxc4
34. Rxa7+ Ke6 35. Rg7 Kf6 36. Raa7 Nf2 37. Rae7 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.3"]
[White "Milov, Leonid"]
[Black "Tiviakov, Sergei"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2462"]
[BlackElo "2639"]
[ECO "C11"]
[Opening "French"]
[Variation "Steinitz variation"]
[WhiteFideId "14101068"]
[BlackFideId "1008013"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nf3 c5 6. Ne2 cxd4 7. Nexd4 Nc6 8.
Bf4 Be7 9. c3 g5 10. Nxg5 Nxd4 11. Nxf7 Nc2+ 12. Kd2 Qb6 13. Kxc2 Qxf2+ 14. Be2
Qxf4 15. Nxh8 Qxe5 16. Bh5+ Kf8 17. Qg4 Qf5+ 18. Qxf5+ exf5 19. Rae1 Nf6 20. Bf7
Bd8 21. Rhf1 Kg7 22. Be6 Bxe6 23. Rxe6 Kxh8 24. Rxf5 Kg7 25. h3 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.4"]
[White "Nikolic, Predrag"]
[Black "Van Overdam, Julian"]
[Result "1-0"]
[WhiteTitle "GM"]
[WhiteElo "2601"]
[BlackElo "2367"]
[ECO "D44"]
[Opening "QGD semi-Slav"]
[Variation "anti-Meran gambit"]
[WhiteFideId "14400014"]
[BlackFideId "1015303"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Bg5 dxc4 5. Nc3 c6 6. e4 b5 7. e5 h6 8. Bh4 g5
9. Nxg5 hxg5 10. Bxg5 Be7 11. exf6 Bxf6 12. Bxf6 Qxf6 13. g3 O-O 14. Bg2 Ba6 15.
O-O Qg7 16. Re1 b4 17. Ne4 Rd8 18. Qa4 Rxd4 19. Rad1 Rd5 20. Qxb4 Nd7 21. Qa3
Bc8 22. Nd6 Nb6 23. Ne8 Qf8 24. Nf6+ Kg7 25. Qc3 Na4 26. Ne8+ Kg8 27. Qxc4 Qxe8
28. Qxa4 Rxd1 29. Rxd1 Bb7 30. Qh4 Qf8 31. Rd7 Ba6 32. Be4 Qg7 33. Rd8+ Rxd8 34.
Qxd8+ Qf8 35. Qxf8+ Kxf8 36. Bxc6 Ke7 37. f4 Bd3 38. Kf2 Kd6 39. Be8 Bg6 40. g4
Ke7 41. Bb5 f6 42. Ke3 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.5"]
[White "Das, Arghyadip"]
[Black "Gindi, Shachar"]
[Result "1-0"]
[WhiteTitle "IM"]
[BlackTitle "FM"]
[WhiteElo "2457"]
[BlackElo "2336"]
[ECO "B23"]
[Opening "Sicilian"]
[Variation "closed, 2...Nc6"]
[WhiteFideId "5003610"]
[BlackFideId "2804182"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 g6 5. Bc4 Bg7 6. Nxd4 cxd4 7. Qf3 Nh6 8.
Ne2 O-O 9. d3 Ng4 10. Bb3 Ne5 11. Qg3 Qb6 12. h4 d5 13. Bxd5 Bg4 14. f3 Be6 15.
Bxe6 Qxe6 16. O-O Rac8 17. Nxd4 Qb6 18. Be3 Nxf3+ 19. Nxf3 Qxe3+ 20. Qf2 Qxf2+
21. Rxf2 Bxb2 22. Rb1 Ba3 23. Rxb7 Rb8 24. Rb3 Rxb3 25. axb3 e5 26. Kf1 Bb2 27.
c4 Ba1 28. Ra2 Bc3 29. Rc2 Bb4 30. Nxe5 f5 31. exf5 Rxf5+ 32. Nf3 Ra5 33. d4 Kf7
34. c5 Ke8 35. Rc4 Ra1+ 36. Ke2 a5 37. Ne5 Ra2+ 38. Kf3 Rb2 39. c6 Rxb3+ 40. Ke4 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.6"]
[White "Pijpers, Arthur"]
[Black "De Jong, Jan-Willem"]
[Result "1/2-1/2"]
[BlackTitle "IM"]
[WhiteElo "2433"]
[BlackElo "2448"]
[ECO "C41"]
[Opening "Philidor"]
[Variation "Improved Hanham variation"]
[WhiteFideId "1019554"]
[BlackFideId "1008641"]
[EventDate "2015.07.17"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 O-O 7. O-O a6 8. a5
exd4 9. Qxd4 b5 10. axb6 Nxb6 11. Re1 Bb7 12. Ba2 Nfd7 13. Nd5 Nxd5 14. Bxd5 Bf6
15. Qd1 c6 16. Bc4 Nc5 17. Bf4 d5 18. exd5 cxd5 19. Bf1 Bxb2 20. Rb1 Bc3 21. Bd2
Bxd2 22. Qxd2 Re8 23. Rxe8+ Qxe8 24. Qa5 Qe7 25. Nd4 g6 26. Qb6 Rc8 27. g3 Kg7
28. h4 Qf6 29. Qxf6+ Kxf6 30. Rb6+ Kg7 31. Nb3 Nxb3 32. cxb3 Rc7 33. Bxa6 Bxa6
34. Rxa6 Rb7 35. Ra5 h5 36. Rxd5 Rxb3 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.7"]
[White "Corstjens, Rolf"]
[Black "Erwich, Frank"]
[Result "0-1"]
[BlackTitle "FM"]
[WhiteElo "1953"]
[BlackElo "2361"]
[ECO "C70"]
[Opening "Ruy Lopez"]
[Variation "Cozio defence deferred"]
[WhiteFideId "1045687"]
[BlackFideId "1007076"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7 5. O-O g6 6. c3 Bg7 7. d4 exd4 8. cxd4
b5 9. Bc2 d5 10. Nc3 Bg4 11. Be3 O-O 12. h3 Bxf3 13. Qxf3 Nxd4 14. Bxd4 Bxd4 15.
Rad1 Bxc3 16. bxc3 c6 17. exd5 Nxd5 18. Bb3 Qa5 19. Bxd5 cxd5 20. Qxd5 Qxc3 21.
Rc1 Qa3 22. Rc2 Rad8 23. Qg5 Rd4 24. Rfc1 Qd6 25. Rc6 Rd1+ 26. Rxd1 Qxc6 27. Rd8
Rxd8 28. Qxd8+ Kg7 29. Qa5 h5 30. g3 Qe6 31. a3 Qc6 32. h4 Qb7 33. Qc3+ Kh7 34.
Qa5 Qc6 35. Kh2 Qc2 36. Kg1 Qb1+ 37. Kh2 Qf1 38. Qb6 a5 39. Qa7 Kg8 40. Qb8+ Kg7
41. Qe5+ Kh7 42. Qf6 Qc4 43. f3 b4 44. axb4 axb4 45. g4 hxg4 46. fxg4 Qe6 47.
Qd4 Qe2+ 48. Kg3 Qe1+ 49. Kg2 Qe2+ 50. Kg3 b3 51. h5 gxh5 52. gxh5 Qxh5 53. Qc3
Qg6+ 54. Kf4 Qc2 55. Qh3+ Kg8 56. Qg3+ Kf8 57. Qh3 Qc4+ 58. Kg5 Qd5+ 59. Kh4
Qe4+ 60. Kg5 Qe5+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.8"]
[White "Visser, Henk-Jan"]
[Black "Polak, Alexander"]
[Result "1/2-1/2"]
[WhiteElo "2272"]
[BlackElo "2114"]
[ECO "B12"]
[Opening "Caro-Kann"]
[Variation "advance variation"]
[WhiteFideId "1010204"]
[BlackFideId "1039695"]
[EventDate "2015.07.17"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. Be3 cxd4 7. Nxd4 Ne7 8. Nd2
Nbc6 9. N2f3 Be4 10. O-O Ng6 11. Nxc6 bxc6 12. Ng5 Be7 13. Nxe4 dxe4 14. Qd4 Qd5
15. Qc3 O-O 16. Rfd1 Qxe5 17. Bd4 Qg5 18. Qxc6 e5 19. Be3 Nf4 20. Bf1 Qg4 21.
Kh1 Ne6 22. h3 Qg6 23. Ba6 Rad8 24. c3 Nc5 25. Qxg6 hxg6 26. Bf1 Na4 27. Bxa7
Nxb2 28. Rxd8 Rxd8 29. Bb5 Rd2 30. Kg1 Rc2 31. a4 Rxc3 32. a5 Rb3 33. a6 Rxb5
34. Bd4 Rb8 35. Bxe5 Ra8 36. Bxb2 Bc5 37. Kf1 Kf8 38. Ke2 Bb6 39. Bc1 Ke7 40.
Be3 Bc7 41. a7 Be5 42. Ra4 f5 43. g3 Kd7 44. Rc4 Kd6 45. h4 Kd5 46. Rc2 Kd6 47.
Kd1 Kd7 48. Kc1 Kd6 49. Kb1 Kd7 50. Rc4 Kd6 51. Kc2 Kd5 52. Kb3 Bd6 53. Rc2 f4
54. Rd2+ Kc6 55. Rxd6+ Kxd6 56. Bxf4+ Kd5 57. Bb8 Kd4 58. Kc2 e3 59. f3 e2 60.
Kd2 e1=Q+ 61. Kxe1 Ke3 62. f4 Kf3 63. Kd2 Kxg3 64. Ke3 Kxh4 65. Kf3 Kh3 66. Ke3
Kg4 67. Ke4 g5 68. fxg5 Kxg5 69. Kd5 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.9"]
[White "Wilschut, Peter"]
[Black "Van Halderen, Herman"]
[Result "1-0"]
[WhiteElo "2238"]
[BlackElo "2052"]
[ECO "A28"]
[Opening "English"]
[Variation "four knights, Romanishin variation"]
[WhiteFideId "1007165"]
[BlackFideId "1026682"]
[EventDate "2015.07.17"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 Bxc3 6. bxc3 O-O 7. e4 d6 8. d3
h6 9. h3 Qe7 10. Be3 Nd8 11. g3 Ne6 12. Bg2 Nc5 13. O-O Bd7 14. Rab1 b6 15. Nh4
Rae8 16. Rfe1 Qd8 17. Bxc5 dxc5 18. Rbd1 Qc8 19. Kh2 Nh7 20. Qe2 Ng5 21. f4 Nh7
22. fxe5 Ng5 23. Qf1 Rxe5 24. d4 Ree8 25. Nf5 f6 26. h4 Nf7 27. Qf4 g5 28. Qf3
Bxf5 29. exf5 Kg7 30. Bh3 Qa6 31. Qh5 Qxa2+ 32. Bg2 Rxe1 33. Qg6+ Kh8 34. Qxf6+
Kg8 35. Qg6+ Kh8 36. Qf6+ Kg8 37. Qg6+ Kh8 38. Rxe1 Qxc4 39. Qf6+ Kg8 40. Qg6+
Kh8 41. f6 Rg8 42. Re8 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.10"]
[White "Johansson, Gunnar"]
[Black "Dellert, Lena"]
[Result "1/2-1/2"]
[WhiteElo "2223"]
[BlackElo "1835"]
[ECO "A80"]
[Opening "Dutch"]
[WhiteFideId "1703501"]
[BlackFideId "12991511"]
[EventDate "2015.07.17"]

1. d4 f5 2. Nc3 d5 3. Bf4 a6 4. e3 Nf6 5. Nf3 e6 6. Bd3 c5 7. dxc5 Bxc5 8. O-O
Nc6 9. Ne2 O-O 10. Ned4 Bd7 11. c4 Qe7 12. Rc1 Rac8 13. cxd5 Nxd5 14. Bg3 Bd6
15. Bxd6 Qxd6 16. Nb3 Ne5 17. Be2 Rxc1 18. Qxc1 Rc8 19. Qd2 Nc4 20. Bxc4 Rxc4
21. Rc1 Rxc1+ 22. Qxc1 b6 23. h4 e5 24. Qc4 b5 25. Qc5 Qxc5 26. Nxc5 e4 27. Nxd7
exf3 28. gxf3 Kf7 29. a3 a5 30. Ne5+ Ke6 31. Nc6 Kd6 32. Nxa5 Kc5 33. Nb7+ Kb6
34. Nd6 g6 35. Nf7 Kc5 36. Kf1 Kc4 37. e4 fxe4 38. fxe4 Nf4 39. e5 Kd5 40. Nd6
Kc6 41. b3 Nd3 42. Nf7 Kd5 43. Ke2 Nc1+ 44. Kd2 Nxb3+ 45. Kc3 Nd4 46. Ng5 Kxe5
47. Nxh7 Nf5 48. Kb4 Nxh4 49. Kxb5 Nf5 50. a4 Nd6+ 51. Kc5 Nb7+ 52. Kb6 Nd6 53.
Ng5 Kf4 54. Ne6+ Kf3 55. Kc5 Nb7+ 56. Kb6 Nd6 57. Kc5 Nb7+ 58. Kb6 Nd6 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.11"]
[White "Vreeburg, Jan"]
[Black "Sorensen, Bent"]
[Result "1/2-1/2"]
[BlackTitle "FM"]
[WhiteElo "1901"]
[BlackElo "2217"]
[ECO "A40"]
[Opening "Queen's pawn"]
[Variation "Franco-Indian (Keres) defence"]
[WhiteFideId "1019066"]
[BlackFideId "1400410"]
[EventDate "2015.07.17"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Bxd2+ 4. Qxd2 Nf6 5. Nc3 d6 6. Nf3 O-O 7. g3 Qe7 8.
Bg2 e5 9. O-O e4 10. Ng5 Bf5 11. Qf4 Bg6 12. Ngxe4 Nxe4 13. Bxe4 Nc6 14. Bxg6
hxg6 15. Rfe1 g5 16. Qd2 Qf6 17. Rad1 Ne7 18. Ne4 Qe6 19. Nxg5 Qxc4 20. b3 Qb5
21. h4 Qd7 22. Qd3 g6 23. d5 Nf5 24. e4 Ng7 25. e5 dxe5 26. Ne4 Ne8 27. Nc5 Qd6
28. Qc3 b6 29. Ne4 Qe7 30. Ng5 Qf6 31. Qxe5 Qxe5 32. Rxe5 f6 33. Re6 fxg5 34.
Rxg6+ Kf7 35. Rxg5 Rd8 36. Rf5+ Kg7 37. Rg5+ Kh6 38. g4 Nf6 39. f3 c6 40. d6 Nd5
41. Rh5+ Kg6 42. Rg5+ Kf6 43. Re1 Rxd6 44. Kf2 Ne7 45. Rge5 Ng6 46. Rf5+ Kg7 47.
Rxf8 Kxf8 48. Kg3 c5 49. h5 Nh8 50. g5 b5 51. Re5 Rc6 52. g6 Nxg6 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.12"]
[White "Happel, Henk"]
[Black "Petrov, Marian"]
[Result "0-1"]
[WhiteTitle "FM"]
[BlackTitle "GM"]
[WhiteElo "2107"]
[BlackElo "2487"]
[ECO "A43"]
[Opening "Old Benoni defence"]
[WhiteFideId "1001078"]
[BlackFideId "2901773"]
[EventDate "2015.07.17"]

1. d4 c5 2. d5 g6 3. c4 Bg7 4. e4 d6 5. Nf3 e5 6. Nc3 Ne7 7. Bd3 h6 8. h4 Nd7 9.
Qc2 Nf6 10. Bd2 Nh5 11. g3 f5 12. O-O-O O-O 13. Nh2 a6 14. Rhg1 b5 15. cxb5 axb5
16. Bxb5 fxe4 17. Be3 Nf5 18. g4 Nd4 19. Bxd4 exd4 20. gxh5 dxc3 21. Rxg6 Bf5
22. Rxg7+ Kxg7 23. Qxc3+ Kh7 24. Rg1 Rf7 25. a4 Qxh4 26. Nf1 Qxf2 27. Qe3 Qf3
28. Rg3 Qxh5 29. Bc6 Raf8 30. a5 Ra7 31. b4 Rb8 32. bxc5 Rxa5 33. Rg7+ Kxg7 34.
Qc3+ Kg6 35. Qxa5 Qe2 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.13"]
[White "Oosterom, Erik"]
[Black "Van Delft, Merijn"]
[Result "0-1"]
[BlackTitle "IM"]
[WhiteElo "2043"]
[BlackElo "2428"]
[ECO "E98"]
[Opening "King's Indian"]
[Variation "orthodox, Aronin-Taimanov, 9.Ne1"]
[WhiteFideId "1003470"]
[BlackFideId "1004670"]
[EventDate "2015.07.17"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7
9. Ne1 Nd7 10. Nd3 f5 11. Bd2 Nf6 12. f3 Kh8 13. g4 c6 14. Kh1 b5 15. g5 Nh5 16.
cxb5 cxd5 17. exd5 f4 18. Nb4 Nf5 19. Ne4 Qd7 20. Nf2 Nfg3+ 21. hxg3 Nxg3+ 22.
Kg2 Qf5 23. Ne4 Nxe4 24. fxe4 Qxg5+ 25. Kh2 Qg3+ 26. Kh1 g5 27. Rc1 Rf6 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.14"]
[White "Overeem, Marc"]
[Black "Vistisen, Lars"]
[Result "1-0"]
[WhiteTitle "FM"]
[WhiteElo "2216"]
[BlackElo "2159"]
[ECO "A55"]
[Opening "Old Indian"]
[Variation "main line"]
[WhiteFideId "1004972"]
[BlackFideId "1404598"]
[EventDate "2015.07.17"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. d4 Nbd7 5. e4 c6 6. Be2 Be7 7. O-O O-O 8. Re1
Re8 9. Bf1 Qc7 10. h3 Nf8 11. d5 Bd7 12. Be3 Rac8 13. Rc1 cxd5 14. cxd5 Qb8 15.
Qb3 Bd8 16. Qa3 a6 17. Nd2 Bc7 18. b4 Qa8 19. Nc4 b5 20. Na5 Kh8 21. Nc6 Bxc6
22. dxc6 Bd8 23. Qb3 Ne6 24. a4 Rxc6 25. axb5 Rc8 26. bxa6 Nxe4 27. Nxe4 Rxc1
28. Bxc1 d5 29. Nd6 Nd4 30. Qg3 Re6 31. Rxe5 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.15"]
[White "Kerkvliet, Max"]
[Black "Weiland, Harro"]
[Result "1-0"]
[WhiteElo "2186"]
[BlackElo "1890"]
[ECO "E62"]
[Opening "King's Indian"]
[Variation "fianchetto, Kavalek (Bronstein) variation"]
[WhiteFideId "1025546"]
[BlackFideId "1006690"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d6 5. g3 O-O 6. Bg2 c6 7. O-O Qa5 8. e4
Nbd7 9. h3 e5 10. Be3 exd4 11. Bxd4 Re8 12. Re1 Nc5 13. Qc2 Ne6 14. Be3 Qc7 15.
Rad1 a6 16. a4 a5 17. Qd2 Nc5 18. e5 Nce4 19. Qc2 Nxc3 20. exd6 Nxd1 21. dxc7
Nxe3 22. Rxe3 Be6 23. Qb3 Rec8 24. Qxb7 Ne8 25. Rxe6 fxe6 26. Qxc6 Nxc7 27. Ng5
Rab8 28. Qd7 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.16"]
[White "Halfhide, Sebastian"]
[Black "Van der Elburg, Freddie"]
[Result "0-1"]
[WhiteElo "2091"]
[BlackElo "2185"]
[ECO "B44"]
[Opening "Sicilian, Szen ('anti-Taimanov') variation"]
[WhiteFideId "1045946"]
[BlackFideId "1007904"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3
Be7 9. Be2 O-O 10. O-O Qc7 11. Be3 b6 12. f3 Bb7 13. Qd2 Ne5 14. Rac1 Rac8 15.
Rfd1 Rfd8 16. Kh1 Ba8 17. Bf1 Qb8 18. Qf2 Nfd7 19. h3 Ng6 20. Nab1 Bc6 21. b4
Rc7 22. Nd2 Rdc8 23. Nb3 Nge5 24. Nd2 b5 25. c5 dxc5 26. bxc5 Bb7 27. f4 Nxc5
28. fxe5 b4 29. Ncb1 Nd3 30. Bxd3 Rxc1 31. Rf1 Rxf1+ 32. Nxf1 Qxe5 33. Nbd2 Rd8
34. Bb1 Qc3 35. Bb6 Rd7 36. Qe3 Qc1 37. Kh2 h6 38. Qe2 Bd6+ 39. e5 Bb8 40. Bd3
Qc6 41. Nc4 Rxd3 42. Na5 Bxe5+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.18"]
[White "Knudsen, Martin"]
[Black "Kolodkin, Daniil"]
[Result "0-1"]
[WhiteElo "2026"]
[BlackElo "2208"]
[ECO "D85"]
[Opening "Gruenfeld"]
[Variation "exchange variation"]
[WhiteFideId "1406523"]
[BlackFideId "1039776"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Nb6 6. e3 Bg7 7. Nf3 O-O 8. Be2
Bg4 9. O-O N8d7 10. h3 Bxf3 11. Bxf3 c6 12. Ne4 e5 13. Bb4 Re8 14. Nd6 Re6 15.
Nxb7 Qb8 16. Nc5 Nxc5 17. Bxc5 e4 18. Bg4 f5 19. Be2 Nd5 20. Qc2 f4 21. exf4
Qxf4 22. Bc4 Rd8 23. Bxa7 g5 24. Qb3 g4 25. Qg3 Qf7 26. Bc5 gxh3 27. Qxh3 Kh8
28. Rfe1 Rg8 29. Bxd5 cxd5 30. g3 Bh6 31. a4 e3 32. fxe3 Qf3 33. Kh2 Bxe3 34.
Bf8 Bf2 35. Ra3 Bxg3+ 36. Qxg3 Qh5+ 37. Qh3 Re2+ 38. Rxe2 Qxe2+ 39. Kh1 Qe1+ 40.
Kh2 Qg1# 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.21"]
[Round "5.19"]
[White "Palit, Somak"]
[Black "Nguyen, Kevin"]
[Result "1-0"]
[WhiteTitle "IM"]
[WhiteElo "2360"]
[BlackElo "1986"]
[ECO "B50"]
[Opening "Sicilian"]
[WhiteFideId "5010454"]
[BlackFideId "1046349"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. d3 g6 5. c3 Nc6 6. Bb3 Bg7 7. O-O O-O 8. Re1 b5
9. h3 a5 10. a3 Ba6 11. d4 Qb6 12. d5 Nd8 13. Nbd2 c4 14. Ba2 Nd7 15. Nf1 Nc5
16. Be3 Qc7 17. Bd4 Nd3 18. Bxg7 Kxg7 19. Re2 Nb7 20. Bb1 Nbc5 21. Bxd3 Nxd3 22.
b4 Bc8 23. Ne1 axb4 24. axb4 Rxa1 25. Qxa1 f5 26. exf5 Bxf5 27. Ne3 Nf4 28. Ra2
Be4 29. Ra7 Qd8 30. Qd1 Bd3 31. Kh2 Rf7 32. g3 Ne2 33. Nxd3 cxd3 34. Kg2 Qf8 35.
f4 Nxc3 36. Qxd3 Qc8 37. Qd4+ Kg8 38. Ng4 Rg7 39. Rxe7 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.1"]
[White "Howell, David W L"]
[Black "Postny, Evgeny"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2698"]
[BlackElo "2642"]
[ECO "C47"]
[Opening "Four knights"]
[Variation "Scotch, 4...exd4"]
[WhiteFideId "410608"]
[BlackFideId "2804344"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8.
exd5 cxd5 9. O-O O-O 10. h3 c6 11. Qf3 Bd6 12. Re1 Bd7 13. Bf4 Bxf4 14. Qxf4 Qb8
15. Qf3 Qd6 16. Qg3 Qxg3 17. fxg3 Rfe8 18. Na4 Rxe1+ 19. Rxe1 Re8 20. Rc1 Kf8
21. c4 dxc4 22. Bxc4 Ne4 23. g4 Re5 24. Bd3 Ng5 25. Nc5 Ke7 26. Rc3 a5 27. Kf2
Ne6 28. Na4 Nf4 29. Bf1 h5 30. gxh5 Rxh5 31. Rc5 Kd6 32. Rxh5 Nxh5 33. Ke3 Be6
34. g4 Nf6 35. a3 g5 36. Kd4 Nd7 37. Nc3 c5+ 38. Ke3 Nf6 39. Bg2 Ke5 40. Na4 Kd6
41. Nc3 Bb3 42. Bf3 Ke5 43. Bc6 Bc4 44. Bg2 Kd6 45. Kf2 Ke5 46. Ke3 Nd5+ 47.
Bxd5 Bxd5 48. Nxd5 Kxd5 49. Kd3 c4+ 50. Kc3 Kc5 51. b3 cxb3 52. Kxb3 Kb5 53. Kc3
Ka4 54. Kb2 f6 55. Ka2 Kb5 56. Kb3 a4+ 57. Kc3 Kc5 58. Kd3 Kd5 59. Kc3 Kc5 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.2"]
[White "Das, Arghyadip"]
[Black "Nikolic, Predrag"]
[Result "1-0"]
[WhiteTitle "IM"]
[BlackTitle "GM"]
[WhiteElo "2457"]
[BlackElo "2601"]
[ECO "C15"]
[Opening "French"]
[Variation "Winawer, Alekhine gambit"]
[WhiteFideId "5003610"]
[BlackFideId "14400014"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Ne2 dxe4 5. a3 Bxc3+ 6. Nxc3 f5 7. f3 exf3 8.
Qxf3 Nf6 9. Bf4 O-O 10. O-O-O c6 11. Bc4 Nd5 12. Rhe1 a5 13. Bxd5 cxd5 14. Nb5
Na6 15. Bd6 Rf6 16. Bf4 Bd7 17. Nd6 Bc6 18. h4 Qe7 19. h5 Rd8 20. Qg3 h6 21. Rd3
Rd7 22. Qh2 Nc7 23. Be5 Rf8 24. Rg3 Qd8 25. Rg6 Kh7 26. Qg3 Rg8 27. Qf4 Qf8 28.
Re3 Ne8 29. Nxe8 Qxe8 30. Reg3 Qf8 31. Rxe6 Rf7 32. Rgg6 Bd7 33. Bd6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.3"]
[White "Tiviakov, Sergei"]
[Black "Wilschut, Peter"]
[Result "1-0"]
[WhiteTitle "GM"]
[WhiteElo "2639"]
[BlackElo "2238"]
[ECO "C08"]
[Opening "French"]
[Variation "Tarrasch, open, 4.ed ed"]
[WhiteFideId "1008013"]
[BlackFideId "1007165"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 c4 6. b3 cxb3 7. axb3 Bd6 8.
Bd3 Nc6 9. O-O Nge7 10. c3 Bf5 11. Bxf5 Nxf5 12. Re1+ Nfe7 13. Nf1 O-O 14. Ne3
Qd7 15. Qd3 Bf4 16. Ba3 Bxe3 17. Rxe3 Rfe8 18. Rae1 Ng6 19. Qf5 Re6 20. Rxe6
fxe6 21. Qxe6+ Qxe6 22. Rxe6 Nf4 23. Re3 h6 24. g3 Ng6 25. h4 Kf7 26. h5 Nf8 27.
Ne5+ Nxe5 28. Rxe5 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.4"]
[White "Chatalbashev, Boris"]
[Black "Van der Marel, Lambertus"]
[Result "1-0"]
[WhiteTitle "GM"]
[WhiteElo "2516"]
[BlackElo "2161"]
[ECO "E21"]
[Opening "Nimzo-Indian"]
[Variation "three knights variation"]
[WhiteFideId "2900440"]
[BlackFideId "1005855"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Bg5 Bb7 6. e3 h6 7. Bh4 g5 8. Bg3 Ne4
9. Qc2 Bxc3+ 10. bxc3 f5 11. Bd3 d6 12. d5 Na6 13. Bxe4 fxe4 14. Qxe4 Qf6 15.
O-O Nc5 16. Qd4 Rf8 17. e4 e5 18. Qe3 Ba6 19. Nd2 Qg6 20. f3 Kd7 21. Qe2 Ke7 22.
a4 h5 23. a5 Nd7 24. Ra2 Bb7 25. Rfa1 h4 26. Bf2 Nf6 27. Nf1 Nh5 28. Ne3 Nf4 29.
Qf1 Rab8 30. axb6 axb6 31. Ra7 Qe8 32. Nf5+ Kf6 33. g3 hxg3 34. hxg3 Nh5 35. Qh3
Rh8 36. Qg4 Qg6 37. Be3 Rh7 38. Rxb7 Rxb7 39. Ra8 Nf4 40. Bxf4 exf4 41. Nxd6
cxd6 42. Qe6+ Kg7 43. Rg8+ Kh6 44. Qxg6# 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.5"]
[White "De Jong, Jan-Willem"]
[Black "Milov, Leonid"]
[Result "1/2-1/2"]
[WhiteTitle "IM"]
[BlackTitle "GM"]
[WhiteElo "2448"]
[BlackElo "2462"]
[ECO "A81"]
[Opening "Dutch defence"]
[WhiteFideId "1008641"]
[BlackFideId "14101068"]
[EventDate "2015.07.17"]

1. d4 f5 2. g3 Nf6 3. Bg2 d6 4. d5 c6 5. c4 e5 6. dxe6 Bxe6 7. Nd2 d5 8. Nh3
dxc4 9. Qc2 Na6 10. O-O Nb4 11. Qc3 Nbd5 12. Qxc4 Qd7 13. Ng5 Bg8 14. Qd4 h6 15.
Ngf3 Nb4 16. Qe5+ Qe7 17. b3 Qxe5 18. Nxe5 Bh7 19. Ndc4 Nbd5 20. Bb2 a5 21. Nd3
a4 22. Bxf6 Nxf6 23. Nb6 Ra7 24. Nxa4 Ba3 25. Nb6 O-O 26. Nc4 Ne4 27. Nxa3 Rxa3
28. Rfc1 Rfa8 29. Bxe4 fxe4 30. Nc5 Rxa2 31. Rxa2 Rxa2 32. Nxb7 Rxe2 33. Nd6 Bg6
34. g4 e3 35. fxe3 Rxe3 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.6"]
[White "Erwich, Frank"]
[Black "Van Overdam, Julian"]
[Result "1-0"]
[WhiteTitle "FM"]
[WhiteElo "2361"]
[BlackElo "2367"]
[ECO "B40"]
[Opening "Sicilian defence"]
[WhiteFideId "1007076"]
[BlackFideId "1015303"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 e6 3. c4 b6 4. Nc3 Bb7 5. d4 cxd4 6. Nxd4 d6 7. Be2 Nf6 8. f3
Be7 9. O-O O-O 10. Be3 Nbd7 11. Qd2 a6 12. a4 Qc7 13. a5 bxa5 14. Nb3 Rab8 15.
Nxa5 Ba8 16. Rfc1 Nc5 17. b4 Nb7 18. Nb3 d5 19. cxd5 Bxb4 20. Qd4 Bd6 21. g3 Be5
22. Qd3 Rbc8 23. Bd4 Bxg3 24. hxg3 Qxg3+ 25. Kf1 Nh5 26. f4 Qxf4+ 27. Bf2 Qg5
28. Qe3 Qxe3 29. Bxe3 Ng3+ 30. Ke1 exd5 31. Nxd5 Rce8 32. Bf3 Nxe4 33. Nc7 Re7
34. Nxa8 Ng5 35. Kf2 Nxf3 36. Kxf3 Rxa8 37. Rxa6 Rd8 38. Nd4 Rde8 39. Bf2 h6 40.
Rg1 Kh8 41. Nf5 Re6 42. Nxg7 Rxa6 43. Nxe8 Rg6 44. Bd4+ Kh7 45. Nf6+ Kg7 46.
Nd7+ Kg8 47. Rb1 Rd6 48. Nf6+ Kf8 49. Be5 Rd3+ 50. Ke2 Ra3 51. Rxb7 Kg7 52. Nd5+
Kg6 53. Ne3 Ra4 54. Rb6+ Kg5 55. Kf3 f5 56. Bg7 Rf4+ 57. Kg3 Re4 58. Bxh6+ Kh5
59. Kf3 Re8 60. Bf4 Rh8 61. Nd5 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.7"]
[White "Petrov, Marian"]
[Black "Overeem, Marc"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "FM"]
[WhiteElo "2487"]
[BlackElo "2216"]
[ECO "C55"]
[Opening "Two knights defence (Modern bishop's opening)"]
[WhiteFideId "2901773"]
[BlackFideId "1004972"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O O-O 6. Re1 d6 7. a4 Kh8 8. Nc3
Bg4 9. h3 Bh5 10. Nd5 Nxd5 11. Bxd5 Rb8 12. c3 Bxf3 13. Qxf3 Bg5 14. Be3 a5 15.
d4 exd4 16. cxd4 Nb4 17. Bb3 Qf6 18. Bxg5 Qxg5 19. Rad1 Rbe8 20. Qc3 c6 21. e5
d5 22. Qc5 Qd8 23. Re3 b6 24. Qc3 f6 25. f4 fxe5 26. fxe5 Qh4 27. Rd2 Re7 28.
Bd1 Ref7 29. Bf3 Qf4 30. Rd1 Nc2 31. Re2 Nb4 32. Bh5 g6 33. Bg4 h5 34. Bf3 Qg5
35. Rf1 Rf4 36. Qe3 Qe7 37. g3 R4f5 38. g4 Rf4 39. Bg2 Rxf1+ 40. Bxf1 Kh7 41.
gxh5 gxh5 42. Rg2 Rg8 43. Be2 Rxg2+ 44. Kxg2 c5 45. Bxh5 Qh4 46. Bg4 cxd4 47.
Qxd4 Qe1 48. Bf5+ Kg8 49. Qg4+ Kf8 50. Qf4 Qe2+ 51. Kg3 Qe1+ 52. Kg4 Qe2+ 53.
Kg5 Ke7 54. Bg4 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.8"]
[White "Sorensen, Bent"]
[Black "Pijpers, Arthur"]
[Result "0-1"]
[WhiteTitle "FM"]
[WhiteElo "2217"]
[BlackElo "2433"]
[ECO "A07"]
[Opening "Reti"]
[Variation "King's Indian attack"]
[WhiteFideId "1400410"]
[BlackFideId "1019554"]
[EventDate "2015.07.17"]

1. Nf3 d5 2. g3 g6 3. d4 Bg7 4. Bg2 c6 5. c4 dxc4 6. Na3 b5 7. Nxb5 cxb5 8. Nd2
Bd7 9. Bxa8 Nc6 10. Bxc6 Bxc6 11. Nf3 Qd5 12. Rg1 Nf6 13. Ne5 Bb7 14. f3 O-O 15.
Be3 Rd8 16. Qd2 Nd7 17. Nxd7 Qxd7 18. Rd1 Qc7 19. Qb4 e5 20. d5 a6 21. Qc5 Qd7
22. d6 Rc8 23. Qa3 e4 24. f4 c3 25. Bc1 e3 26. Qb3 Be4 27. Bxe3 cxb2 28. Kf2
b1=Q 29. Rxb1 Bxb1 30. Rxb1 Qxd6 31. Rd1 Qe7 32. Qd5 h5 33. Rd3 h4 34. g4 Rc2
35. Qa8+ Kh7 36. Qxa6 Qe4 37. Qxb5 Qh1 38. Bd2 Qxh2+ 39. Ke3 Qg3+ 40. Ke4 Qxg4
41. Rd7 h3 42. Kd3 h2 43. Qb7 Rb2 44. Qd5 Qf5+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.9"]
[White "Van Delft, Merijn"]
[Black "Kerkvliet, Max"]
[Result "1-0"]
[WhiteTitle "IM"]
[WhiteElo "2428"]
[BlackElo "2186"]
[ECO "B01"]
[Opening "Scandinavian"]
[Variation "Pytel-Wade variation"]
[WhiteFideId "1004670"]
[BlackFideId "1025546"]
[EventDate "2015.07.17"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Nf3 c6 6. g3 Bg4 7. Bg2 e6 8. O-O
Be7 9. h3 Bxf3 10. Bxf3 O-O 11. Ne2 Nbd7 12. c4 Rad8 13. Qc2 e5 14. Rd1 Qc7 15.
Bg2 Bd6 16. c5 Be7 17. b4 Nd5 18. Rb1 Bf6 19. h4 Rfe8 20. a3 Nf8 21. Bf3 Ne6 22.
dxe5 Bxe5 23. Kg2 a6 24. Rb3 Ne7 25. Rbd3 Rxd3 26. Rxd3 Rd8 27. Bg4 Rxd3 28.
Qxd3 Qd8 29. Qe3 Qd5+ 30. Bf3 Nf5 31. Qe4 Qxe4 32. Bxe4 Nfd4 33. Nxd4 Bxd4 34.
Kf3 h6 35. Bf5 Kf8 36. h5 Bc3 37. Ke3 Ke7 38. Kd3 Be1 39. Be3 a5 40. Kc4 axb4
41. axb4 Kf6 42. Bh3 Ke7 43. Bf5 Kf6 44. Bh3 Ke7 45. b5 Ba5 46. Bg2 Kd7 47. Be4
Be1 48. Bf5 Ke7 49. g4 Ba5 50. Be4 Kd7 51. b6 Be1 52. Bf5 Ke7 53. Bc2 Kd7 54.
Bd3 Ba5 55. Bf1 Be1 56. Bg2 Ba5 57. f4 f6 58. Bh3 Be1 59. g5 Bh4 60. gxh6 gxh6
61. Kd3 Ke7 62. Ke4 Be1 63. Kd3 Bh4 64. Bg2 Nd8 65. Ke4 Ke6 66. Bh3+ Kf7 67. Bc8
Be1 68. Bd4 Bh4 69. Kf5 Kg7 70. Bc3 Kf7 71. Bb2 Ke7 72. Kg6 Bf2 73. Bxf6+ Ke8
74. Kxh6 Be3 75. Kg5 Nf7+ 76. Kg4 Bxc5 77. Bxb7 Bxb6 78. Bxc6+ Kf8 79. Bd5 Be3
80. Kf5 Nh6+ 81. Ke4 Bc1 82. Bd4 Bd2 83. Bb2 Bb4 84. f5 Bd6 85. f6 Bc7 86. Ba3+
Ke8 87. Bc1 Nf7 88. Kf5 Bd6 89. Kg6 Ne5+ 90. Kf5 Nf7 91. Bd2 Kf8 92. h6 Ba3 93.
Bxf7 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.10"]
[White "Gindi, Shachar"]
[Black "Vreeburg, Jan"]
[Result "1-0"]
[WhiteTitle "FM"]
[WhiteElo "2336"]
[BlackElo "1901"]
[ECO "B08"]
[Opening "Pirc"]
[Variation "classical (two knights) system"]
[WhiteFideId "2804182"]
[BlackFideId "1019066"]
[EventDate "2015.07.17"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nf3 Nf6 5. Be3 O-O 6. Qd2 Nbd7 7. Bh6 e5 8.
O-O-O Qe7 9. h4 Bxh6 10. Qxh6 Ng4 11. Qd2 Nb6 12. h5 Qf6 13. d5 Bd7 14. Rh4 Qf4
15. Bb5 Qxd2+ 16. Rxd2 Nf6 17. Bxd7 Nbxd7 18. g4 Nc5 19. Re2 c6 20. Nd2 g5 21.
Rh1 h6 22. f3 cxd5 23. exd5 a6 24. Nc4 Rad8 25. b4 Na4 26. Nxa4 b5 27. Ne3 bxa4
28. c4 Kg7 29. Kc2 Rfe8 30. Rf2 e4 31. f4 Nd7 32. fxg5 Ne5 33. gxh6+ Kxh6 34.
Rf6+ Kh7 35. g5 Kg8 36. Nf5 Ng4 37. Rxd6 Ne3+ 38. Nxe3 Rxd6 39. c5 Rdd8 40. Kc3
Re5 41. Rg1 Kf8 42. Kd4 f6 43. Rf1 Rxg5 44. Rxf6+ Ke7 45. Re6+ Kf7 46. Re5 Rg1
47. c6 Rc1 48. Nc4 e3 49. c7 Rd1+ 50. Kxe3 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.11"]
[White "Van der Elburg, Freddie"]
[Black "Visser, Henk-Jan"]
[Result "0-1"]
[WhiteElo "2185"]
[BlackElo "2272"]
[ECO "A03"]
[Opening "Bird's opening"]
[WhiteFideId "1007904"]
[BlackFideId "1010204"]
[EventDate "2015.07.17"]

1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nh6 5. O-O b6 6. d3 Bb7 7. Nc3 d4 8. Ne4 c5
9. Nh4 Nc6 10. f5 Ng4 11. h3 Ne3 12. Bxe3 dxe3 13. c3 Qc7 14. Qc1 Bh6 15. b4 Ne5
16. bxc5 Rc8 17. cxb6 axb6 18. c4 Nd7 19. Qe1 Bg7 20. Rb1 Be5 21. Kh2 gxf5 22.
Nxf5 Rg8 23. Qb4 Nc5 24. Qxb6 Bxe4 25. Qxc7 Bxc7 26. dxe4 e6 27. Nh6 Rxg3 28.
Kh1 Nxe4 29. Bxe4 Rxh3+ 30. Kg2 Rg3+ 31. Kh1 Rh3+ 32. Kg2 Rh2+ 33. Kf3 Rh3+ 34.
Kg2 Rxh6 35. Rh1 Rf6 36. Bf3 h6 37. c5 Ke7 38. c6 Rg6+ 39. Kh3 Rg3+ 40. Kh4 Bf4
41. Rb7+ Kf6 42. Rf1 e5 43. Bd5 Rg7 44. c7 Kf5 45. Bf3 Bg3+ 46. Kh3 Bf2 47. Rc1
f6 48. Rc4 Rg3+ 49. Kh2 Rxf3 50. Rb8 Rxc7 51. Rxc7 Rf4 52. Rg7 Bh4 53. Rb2 Ra4
54. Rgb7 Be1 55. Kg2 Rg4+ 56. Kh2 Rf4 57. Rg7 h5 58. Rb1 Bc3 59. Kg1 Ra4 60. Rb3
Bd4 61. a3 Bc5 62. Rh7 Rg4+ 63. Kh1 Rh4+ 64. Kg2 Kg6 65. Rc7 Rg4+ 66. Kh3 Bd4
67. a4 Rg1 68. Ra3 Rb1 69. a5 Rb8 70. a6 Ra8 71. Kh4 Kf5 72. Rh7 Ke4 73. Kxh5 f5
74. Kg6 f4 75. Rf7 Kd5 76. a7 Kc6 77. Kg5 Kd5 78. Kg4 Ke4 79. Rg7 Bc5 80. Ra4+
Bd4 81. Rb4 f3 82. exf3+ Kd3 83. Rb1 e2 84. Re7 Ke3 85. Rb3+ Kf2 86. Rb1 Rxa7
87. Rxa7 Bxa7 88. Kf5 Bb8 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.12"]
[White "Polak, Alexander"]
[Black "Johansson, Gunnar"]
[Result "0-1"]
[WhiteElo "2114"]
[BlackElo "2223"]
[ECO "B49"]
[Opening "Sicilian"]
[Variation "Taimanov variation"]
[WhiteFideId "1039695"]
[BlackFideId "1703501"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Be2 b5 8. O-O
Bb7 9. f4 Bc5 10. Kh1 Qb6 11. Nxc6 Bxe3 12. Ne5 d6 13. Ng4 Bd4 14. Qe1 Nf6 15.
e5 Nxg4 16. Bxg4 dxe5 17. fxe5 Qc7 18. Qh4 Bxe5 19. Rae1 O-O 20. Re3 Rad8 21.
Be2 Bxc3 22. Rxc3 Qe5 23. Rh3 Qe4 24. Qxe4 Bxe4 25. Rc3 Rc8 26. Rxc8 Rxc8 27.
Rd1 Kf8 28. c3 Ke7 29. Rd4 Bc6 30. Kg1 Rd8 31. Rxd8 Kxd8 32. a4 Kc7 33. a5 Kd6
34. Kf2 f5 35. g3 g5 36. b4 Bd5 37. Bd3 h6 38. Ke3 Ke5 39. Bc2 f4+ 40. gxf4+
gxf4+ 41. Kf2 Kd6 42. Bd1 e5 43. Bg4 Bb7 44. Bd1 e4 45. Bc2 Ke5 46. Bb3 Bd5 47.
Bd1 e3+ 48. Ke2 Bc4+ 49. Ke1 Ke4 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.13"]
[White "Dellert, Lena"]
[Black "Palit, Somak"]
[Result "0-1"]
[BlackTitle "IM"]
[WhiteElo "1835"]
[BlackElo "2360"]
[ECO "B06"]
[Opening "Robatsch defence"]
[WhiteFideId "12991511"]
[BlackFideId "5010454"]
[EventDate "2015.07.17"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Be3 d5 5. Qd2 dxe4 6. Nxe4 Nd7 7. Nf3 Ngf6 8.
Nxf6+ Nxf6 9. c3 O-O 10. Bd3 Ng4 11. Bf4 c5 12. Bc2 cxd4 13. cxd4 Nf6 14. O-O b6
15. Rfe1 Bb7 16. Ne5 Rc8 17. Rad1 Qd5 18. Nf3 Qxa2 19. Rxe7 Bxf3 20. gxf3 Nd5
21. Re2 Rxc2 22. Qxc2 Nxf4 23. Re3 Qd5 24. Qe4 Qg5+ 25. Kf1 Rc8 26. Rc3 Qg2+ 27.
Ke1 Qg1+ 28. Kd2 Qxf2+ 29. Kc1 Ne2+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.14"]
[White "Kolodkin, Daniil"]
[Black "Van Briemen, Willem"]
[Result "1-0"]
[WhiteElo "2208"]
[BlackElo "2041"]
[ECO "C15"]
[Opening "French"]
[Variation "Winawer (Nimzovich) variation"]
[WhiteFideId "1039776"]
[BlackFideId "1026445"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 Qxd5 5. Nf3 Bd7 6. a3 Bxc3+ 7. bxc3 Bb5 8.
Bxb5+ Qxb5 9. Ne5 Nc6 10. a4 Qd5 11. Nf3 O-O-O 12. O-O e5 13. Be3 Qc4 14. Ra3 f5
15. Nd2 Qe6 16. Nb3 Qd6 17. Qc1 Nf6 18. dxe5 Nxe5 19. Nd4 Nc4 20. Rb3 Nxe3 21.
Qxe3 Ng4 22. Qh3 g6 23. Nb5 Qc5 24. Qg3 Rhe8 25. h3 Nf6 26. Nd4 Ne4 27. Qf3 c6
28. Rd1 Rd5 29. Rd3 Nxc3 30. Rbxc3 Re1+ 31. Kh2 Qd6+ 32. Qg3 f4 33. Qg4+ Kc7 34.
Nb5+ 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.15"]
[White "Heemskerk, Wim"]
[Black "Corstjens, Rolf"]
[Result "1/2-1/2"]
[WhiteTitle "FM"]
[WhiteElo "2175"]
[BlackElo "1953"]
[ECO "A13"]
[Opening "English"]
[Variation "Neo-Catalan accepted"]
[WhiteFideId "1001000"]
[BlackFideId "1045687"]
[EventDate "2015.07.17"]

1. Nf3 Nf6 2. g3 e6 3. c4 d5 4. Bg2 dxc4 5. Qa4+ Bd7 6. Qxc4 Bc6 7. O-O Bd5 8.
Qc2 c5 9. Nc3 Bc6 10. d3 Nbd7 11. Bf4 Be7 12. e4 O-O 13. d4 b5 14. Rad1 Qb6 15.
d5 exd5 16. exd5 Bb7 17. d6 Bd8 18. Rfe1 a5 19. Ne5 b4 20. Nxd7 Nxd7 21. Nd5
Bxd5 22. Bxd5 Ra7 23. Qc4 Kh8 24. h4 f6 25. Be6 Qc6 26. b3 Nb6 27. Qc2 Nc8 28.
h5 a4 29. Qf5 Nb6 30. Be3 Ra5 31. h6 g6 32. Qd3 c4 33. bxc4 Rh5 34. Bd5 Nxd5 35.
cxd5 Qxd6 36. Bf4 Qd7 37. Re6 g5 38. Bd6 Rg8 39. Bxb4 Rxh6 40. Qe4 Qf7 41. g4
Rh4 42. Kg2 h5 43. Rh1 Rxh1 44. Kxh1 Qh7 45. Qxh7+ Kxh7 46. gxh5 Kh6 47. Bc3
Kxh5 48. Bxf6 Bxf6 49. Rxf6 Rd8 50. Ra6 Rxd5 51. Rxa4 Rd2 52. Kg2 g4 53. Ra8 Kh4
54. a4 Ra2 55. Kf1 g3 56. fxg3+ Kxg3 57. Ra5 Kf3 58. Ke1 Ke3 59. Kd1 Kd3 60. Kc1
Kc4 61. Kb1 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.16"]
[White "Wallgren, Ulf"]
[Black "Van Drunick, Jan-Willem"]
[Result "1-0"]
[WhiteElo "2141"]
[BlackElo "1919"]
[ECO "C44"]
[Opening "Ponziani"]
[Variation "Fraser defence"]
[WhiteFideId "1706527"]
[BlackFideId "1028650"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 Nxe4 5. d5 Bc5 6. dxc6 Bxf2+ 7. Ke2 bxc6 8.
Nbd2 Nxd2 9. Qxd2 Bb6 10. Qg5 Qxg5 11. Bxg5 O-O 12. Re1 d6 13. Kd2 Be6 14. a3 a5
15. Bd3 f5 16. Nxe5 dxe5 17. Rxe5 Bd5 18. Bxf5 Bxg2 19. Rhe1 Bd5 20. Be7 Rfe8
21. Kd3 Ba2 22. Bd7 Reb8 23. Bxc6 Bf2 24. Rf1 Ra6 25. Bb5 Rxb5 26. Rxb5 Kf7 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.18"]
[White "Van Halderen, Herman"]
[Black "Happel, Henk"]
[Result "1-0"]
[BlackTitle "FM"]
[WhiteElo "2052"]
[BlackElo "2107"]
[ECO "A84"]
[Opening "Dutch defence, Rubinstein variation"]
[WhiteFideId "1026682"]
[BlackFideId "1001078"]
[EventDate "2015.07.17"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. Nf3 d5 5. g3 c6 6. Bg2 Bd6 7. O-O O-O 8. b3 Qe7
9. Bb2 Nbd7 10. Qc2 Ne4 11. e3 Nxc3 12. Bxc3 b6 13. Rfe1 Bb7 14. Rad1 Rac8 15.
Qb2 Nf6 16. Re2 Ba6 17. Ne5 Ne4 18. Rc2 Bxe5 19. dxe5 dxc4 20. bxc4 Rfd8 21.
Rdc1 Rd7 22. Be1 Rcd8 23. Bf1 c5 24. h4 Rd1 25. Be2 Rxc1 26. Rxc1 g5 27. f3 Nxg3
28. Bxg3 gxh4 29. Bf2 Kh8 30. Kh2 Rg8 31. Qd2 h3 32. Rg1 Rxg1 33. Bxg1 Qg5 34.
Bf1 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.20"]
[White "Weiland, Harro"]
[Black "Halfhide, Sebastian"]
[Result "0-1"]
[WhiteElo "1890"]
[BlackElo "2091"]
[ECO "C45"]
[Opening "Scotch"]
[Variation "Meitner variation"]
[WhiteFideId "1006690"]
[BlackFideId "1045946"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Nc2 Bxe3 8.
Nxe3 d6 9. Nd2 Be6 10. Qf3 Qg6 11. Qg3 Qh6 12. h4 O-O-O 13. Be2 g6 14. Qg5 Qg7
15. Nd5 Bxd5 16. exd5 f6 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.22"]
[White "Bebchuk, Leonid"]
[Black "Jongste, David"]
[Result "0-1"]
[WhiteElo "2072"]
[BlackElo "1976"]
[ECO "B44"]
[Opening "Sicilian, Szen ('anti-Taimanov') variation"]
[WhiteFideId "2803305"]
[BlackFideId "1042637"]
[EventDate "2015.07.17"]

1. e4 c5 2. Ne2 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. Bf4 e5 7. Be3 a6 8. N5c3
Nf6 9. Bg5 Be6 10. Nd5 Bxd5 11. exd5 Qa5+ 12. Nc3 Nd4 13. Bxf6 gxf6 14. Bd3 b5
15. O-O Be7 16. a3 Rc8 17. Qg4 Qc7 18. Qg7 Kd7 19. Ne4 Qd8 20. Qxf7 Rf8 21. Qxh7
f5 22. Ng3 e4 23. Be2 Rxc2 24. Bh5 Kc8 25. Rac1 Rxc1 26. Rxc1+ Kb8 27. Rd1 Rh8
28. Qf7 Rf8 29. Rxd4 Rxf7 30. Bxf7 Qa5 31. Rd1 Bf6 32. Nxf5 Bxb2 33. h4 Bxa3 34.
h5 Bb2 35. h6 Qd8 36. Be6 b4 37. Re1 Bc3 38. Ng3 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.23"]
[White "Brantjes, Yme"]
[Black "Van der Raaf, Erik"]
[Result "0-1"]
[WhiteElo "1937"]
[BlackElo "2110"]
[ECO "C00"]
[Opening "French"]
[Variation "Labourdonnais variation"]
[WhiteFideId "1039539"]
[BlackFideId "1004115"]
[EventDate "2015.07.17"]

1. e4 e6 2. f4 d5 3. e5 c5 4. Nf3 Nc6 5. c3 d4 6. Bd3 Nh6 7. O-O Be7 8. Qe2 a6
9. Be4 Bd7 10. Kh1 Nf5 11. Na3 h5 12. Nc2 Qb6 13. d3 O-O-O 14. Qf2 h4 15. Bxf5
exf5 16. cxd4 cxd4 17. Ncxd4 Nxd4 18. Be3 h3 19. Bxd4 Qh6 20. Bb6 hxg2+ 21. Kxg2
Bc6 22. Kg1 Rxd3 23. Qc2 Qg6+ 24. Ng5 Bxg5 25. Qxd3 Bh4+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.23"]
[Round "6.24"]
[White "Van der Scheer, Henk"]
[Black "Havenaar, Jan"]
[Result "0-1"]
[WhiteElo "2049"]
[BlackElo "2017"]
[ECO "D02"]
[Opening "Queen's pawn game"]
[WhiteFideId "1051458"]
[BlackFideId "1005081"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. Nf3 d5 3. g3 e6 4. Bg2 Bd6 5. Nc3 c6 6. Bg5 h6 7. Bxf6 Qxf6 8. e4
Qe7 9. e5 Bc7 10. O-O Nd7 11. Re1 O-O 12. Nd2 c5 13. f4 cxd4 14. Ne2 Bb6 15. Kh1
d3 16. cxd3 Qb4 17. Nb3 Nc5 18. Nxc5 Bxc5 19. d4 Bb6 20. Rb1 Bd7 21. a3 Qa4 22.
Nc3 Qxd4 23. Qh5 Kh7 24. Rbd1 Qc5 25. g4 g6 26. Qh4 Qf2 27. Qe7 Bc6 28. Rf1 Qc5
29. Qh4 Bd8 30. Qh3 Be7 31. Bf3 Rad8 32. g5 h5 33. Bxh5 gxh5 34. Qxh5+ Kg8 35.
g6 d4+ 36. Rf3 Bxf3+ 37. Qxf3 dxc3 38. Rg1 Qc6 39. Qxc6 bxc6 40. f5 exf5 41.
gxf7+ Kxf7 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.1"]
[White "Howell, David W L"]
[Black "Das, Arghyadip"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "IM"]
[WhiteElo "2698"]
[BlackElo "2457"]
[ECO "D20"]
[Opening "QGA"]
[Variation "3.e4"]
[WhiteFideId "410608"]
[BlackFideId "5003610"]
[EventDate "2015.07.17"]

1. d4 d5 2. c4 dxc4 3. e4 b5 4. a4 c6 5. Nc3 a6 6. axb5 cxb5 7. Nxb5 axb5 8.
Rxa8 Bb7 9. Ra1 e6 10. Be2 Nf6 11. Nf3 Nxe4 12. O-O Nc6 13. b3 Na5 14. Bxc4 bxc4
15. bxc4 Nc3 16. Qd3 Bb4 17. d5 Nb3 18. Ba3 Nc5 19. Qe3 Qa5 20. Bb2 N3a4 21.
Bxg7 Rg8 22. Bd4 Rg4 23. Rfb1 Re4 24. Qg5 Rxd4 25. Nxd4 Bc3 26. Qg8+ Ke7 27.
Rxb7+ 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.2"]
[White "Postny, Evgeny"]
[Black "Tiviakov, Sergei"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2642"]
[BlackElo "2639"]
[ECO "E17"]
[Opening "Queen's Indian"]
[Variation "old main line, 6.O-O"]
[WhiteFideId "2804344"]
[BlackFideId "1008013"]
[EventDate "2015.07.17"]

1. Nf3 Nf6 2. c4 b6 3. g3 Bb7 4. Bg2 e6 5. O-O Be7 6. d4 O-O 7. Re1 Na6 8. Nc3
d5 9. cxd5 exd5 10. Bf4 c5 11. Rc1 Ne4 12. a3 Re8 13. Qa4 cxd4 14. Nxd4 Nac5 15.
Qd1 Nxc3 16. Rxc3 Bf6 17. Rc2 Qd7 18. Be3 Rac8 19. Qb1 Ba6 20. Rd1 Bc4 21. b3
Ba6 22. Bf3 Ne4 23. Rxc8 Rxc8 24. Qb2 h6 25. Rc1 Rxc1+ 26. Qxc1 Bxd4 27. Bxd4
Ng5 28. Qe3 Nxf3+ 29. Qxf3 Qe6 30. Kf1 Qe4 31. Qxe4 dxe4 32. Be5 Bb7 33. Bb8 a6
34. Ba7 b5 35. Ke1 b4 36. axb4 Bd5 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.3"]
[White "Erwich, Frank"]
[Black "Chatalbashev, Boris"]
[Result "0-1"]
[WhiteTitle "FM"]
[BlackTitle "GM"]
[WhiteElo "2361"]
[BlackElo "2516"]
[ECO "A10"]
[Opening "English opening"]
[WhiteFideId "1007076"]
[BlackFideId "2900440"]
[EventDate "2015.07.17"]

1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 d6 5. e3 Nf6 6. Nge2 O-O 7. O-O Re8 8. d4 e4
9. f3 exf3 10. Bxf3 c6 11. e4 Bh3 12. Re1 Bg4 13. Bxg4 Nxg4 14. Kg2 c5 15. dxc5
dxc5 16. Qxd8 Rxd8 17. Nd5 Nc6 18. Bg5 f6 19. Bd2 Nge5 20. Rec1 Nd3 21. Rc3 Nxb2
22. Rb1 Na4 23. Rcb3 Nb6 24. Bc3 Rd6 25. Nef4 Ne5 26. Bxe5 fxe5 27. Ne2 Nxd5 28.
exd5 Ra6 29. Rxb7 Rxa2 30. Rb8+ Rxb8 31. Rxb8+ Bf8 32. Kf3 Kf7 33. Rb7+ Kf6 34.
Rxh7 a5 35. Ra7 e4+ 36. Kf2 Bd6 37. Ra6 Ke5 38. Ra8 Rc2 39. Re8+ Kf5 40. Re6 Bc7
41. Re7 Bd8 42. Re8 Bf6 43. g4+ Kxg4 44. Rxe4+ Kf5 45. Kf3 Be5 46. Ng3+ Bxg3 47.
hxg3 Rc3+ 48. Re3 Rxc4 49. Re8 Rd4 50. Ra8 Rd3+ 51. Kf2 Rxd5 52. Rxa5 Kg4 53.
Ra6 g5 54. Rc6 Rf5+ 55. Kg2 Re5 56. Kf2 Kf5 57. Rc8 Ke4 58. Ke2 Kd4+ 59. Kd2 c4
60. Rc7 Ra5 61. Rd7+ Ke4 62. Rc7 Ra2+ 63. Kc3 Kf3 64. Rxc4 g4 65. Kd3 Ra8 66.
Kd2 Re8 67. Rc3+ Kf2 68. Kd1 Re3 69. Rc8 Kxg3 70. Kd2 Re7 71. Rg8 Kf3 72. Rf8+
Kg2 73. Rg8 g3 74. Rh8 Kf2 75. Rf8+ Kg1 76. Rg8 g2 77. Rh8 Re4 78. Kd3 Re5 79.
Kd2 Kf2 80. Rf8+ Kg3 81. Rg8+ Kf3 82. Kd3 Rd5+ 83. Kc2 Rf5 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.4"]
[White "Nikolic, Predrag"]
[Black "Van Delft, Merijn"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "IM"]
[WhiteElo "2601"]
[BlackElo "2428"]
[ECO "D45"]
[Opening "QGD semi-Slav"]
[Variation "5...Nd7"]
[WhiteFideId "14400014"]
[BlackFideId "1004670"]
[EventDate "2015.07.17"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nc3 e6 5. e3 Nbd7 6. Be2 Bd6 7. O-O O-O 8. b3 b6
9. Bb2 Bb7 10. a4 a5 11. Qc2 Qe7 12. Rad1 Rad8 13. Bd3 Rfe8 14. Rfe1 e5 15. e4
dxc4 16. Bxc4 exd4 17. Nxd4 Bc5 18. Nf5 Qf8 19. h3 Ne5 20. Rxd8 Rxd8 21. Bf1 Re8
22. Nd1 g6 23. Nfe3 Bb4 24. Bc3 c5 25. f3 Nc6 26. Qb2 Nd4 27. Bxb4 axb4 28. Nc2
Nxc2 29. Qxc2 Qd6 30. Nb2 Nh5 31. Nc4 Qf6 32. Qd2 Nf4 33. e5 Qh4 34. Qf2 Qg5 35.
g3 Bd5 36. h4 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.5"]
[White "Pijpers, Arthur"]
[Black "Petrov, Marian"]
[Result "1/2-1/2"]
[BlackTitle "GM"]
[WhiteElo "2433"]
[BlackElo "2487"]
[ECO "B23"]
[Opening "Sicilian"]
[Variation "chameleon variation"]
[WhiteFideId "1019554"]
[BlackFideId "2901773"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 Nd4 4. b3 d6 5. Bb2 Nf6 6. Nxd4 cxd4 7. Nd5 Nxe4 8.
Bb5+ Bd7 9. Qe2 Nf6 10. Nxf6+ gxf6 11. Bxd4 Bxb5 12. Qxb5+ Qd7 13. Qxd7+ Kxd7
14. c4 Rg8 15. O-O f5 16. f4 h5 17. Rae1 Rg4 18. g3 h4 19. Kf2 Bh6 20. Kf3 e5
21. Bxe5 dxe5 22. Rxe5 hxg3 23. Rd5+ Kc6 24. Rxf5 Rxf4+ 25. Rxf4 Bxf4 26. Kxf4
gxh2 27. Rh1 Rh8 28. d4 b5 29. Kg3 bxc4 30. bxc4 Rd8 31. d5+ Kc5 32. Rxh2 Kxc4
33. Rc2+ Kb4 34. Rc7 a5 35. Rxf7 Rxd5 36. Kf4 Ka3 37. Ke4 Rd2 38. Ke3 Rxa2 39.
Kd3 Rh2 40. Kc3 a4 41. Ra7 Rh4 42. Kc2 Ka2 43. Rb7 Rc4+ 44. Kd2 a3 45. Rb8 Ka1
46. Rb7 Rh4 47. Kc2 Rh2+ 48. Kc1 Rb2 49. Ra7 Ka2 50. Rc7 Rb6 51. Kc2 Rb8 52. Rc6
Rh8 53. Rb6 Rh2+ 54. Kc1 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.6"]
[White "Milov, Leonid"]
[Black "Gindi, Shachar"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "FM"]
[WhiteElo "2462"]
[BlackElo "2336"]
[ECO "A03"]
[Opening "Bird's opening"]
[WhiteFideId "14101068"]
[BlackFideId "2804182"]
[EventDate "2015.07.17"]

1. f4 d5 2. Nf3 Bg4 3. e3 Nd7 4. Be2 Ngf6 5. O-O Bxf3 6. Bxf3 e5 7. d4 e4 8. Be2
Bd6 9. b3 Qe7 10. c4 c6 11. c5 Bc7 12. b4 a6 13. Bd2 h6 14. Be1 g5 15. Bg3 gxf4
16. Bxf4 Bxf4 17. Rxf4 Rg8 18. Nc3 Qe6 19. Qe1 Rg5 20. Qh4 O-O-O 21. Raf1 Rdg8
22. g3 Ne8 23. a4 f5 24. b5 axb5 25. axb5 Nf8 26. R4f2 Ng7 27. Ra1 Ng6 28. Qxh6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.7"]
[White "Visser, Henk-Jan"]
[Black "De Jong, Jan-Willem"]
[Result "0-1"]
[BlackTitle "IM"]
[WhiteElo "2272"]
[BlackElo "2448"]
[ECO "C84"]
[Opening "Ruy Lopez"]
[Variation "closed defence"]
[WhiteFideId "1010204"]
[BlackFideId "1008641"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 d6 7. c3 O-O 8. Re1 b5
9. Bc2 Nd7 10. d4 Bb7 11. d5 Na5 12. b3 c6 13. c4 Bc8 14. Nc3 cxd5 15. Nxd5 bxc4
16. Ba3 Nb7 17. Nd2 cxb3 18. Bxb3 Ndc5 19. Nc4 Be6 20. Ncb6 Rb8 21. Rb1 Bg5 22.
Qe2 Kh8 23. Bc2 g6 24. Bb2 f6 25. g3 Bh6 26. Red1 Bg7 27. Ba3 f5 28. exf5 gxf5
29. Qh5 Bf7 30. Qh3 Bg6 31. Nc4 Ne6 32. Bb2 Nbc5 33. f4 Nd4 34. Qg2 Bh5 35. Rf1
Be2 36. Nce3 Bxf1 37. Qxf1 Nxc2 38. Nxc2 Qd7 39. Nce3 Rxb2 40. Rxb2 exf4 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.8"]
[White "Johansson, Gunnar"]
[Black "Wilschut, Peter"]
[Result "1/2-1/2"]
[WhiteElo "2223"]
[BlackElo "2238"]
[ECO "D11"]
[Opening "QGD Slav"]
[Variation "4.e3"]
[WhiteFideId "1703501"]
[BlackFideId "1007165"]
[EventDate "2015.07.17"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. h3 Bh5 6. cxd5 Bxf3 7. Qxf3 cxd5 8.
Nc3 e6 9. Bd3 Bb4 10. Bd2 O-O 11. O-O Nc6 12. Rfc1 Re8 13. Qd1 Qe7 14. Nb5 Bxd2 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.9"]
[White "Palit, Somak"]
[Black "Wallgren, Ulf"]
[Result "1-0"]
[WhiteTitle "IM"]
[WhiteElo "2360"]
[BlackElo "2141"]
[ECO "B01"]
[Opening "Scandinavian (centre counter) defence"]
[WhiteFideId "5010454"]
[BlackFideId "1706527"]
[EventDate "2015.07.17"]

1. e4 d5 2. Nc3 dxe4 3. Nxe4 Bf5 4. Ng3 Bg6 5. Nf3 Nd7 6. h4 h6 7. h5 Bh7 8. d4
e6 9. Bd3 Bxd3 10. Qxd3 Ngf6 11. Bd2 c6 12. O-O-O Qc7 13. Ne4 Nxe4 14. Qxe4 Nf6
15. Qe2 Bd6 16. g3 O-O-O 17. c4 b6 18. Kb1 c5 19. Bc3 Rhe8 20. dxc5 Qxc5 21. Ka1
Bc7 22. Nd4 e5 23. Nf5 Rxd1+ 24. Rxd1 Nxh5 25. Rd5 Qf8 26. c5 bxc5 27. Qa6+ Kb8
28. Ba5 Bxa5 29. Rd7 Bc7 30. Qb5+ Kc8 31. Qc6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.10"]
[White "Van der Raaf, Erik"]
[Black "Kolodkin, Daniil"]
[Result "1-0"]
[WhiteElo "2110"]
[BlackElo "2208"]
[ECO "B90"]
[Opening "Sicilian"]
[Variation "Najdorf, Adams attack"]
[WhiteFideId "1004115"]
[BlackFideId "1039776"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 Be7 8. Bg2
Qc7 9. Be3 Nc6 10. O-O O-O 11. Nxc6 bxc6 12. g5 Nd7 13. f4 Re8 14. h4 Bf8 15. h5
g6 16. Ne2 Bg7 17. c3 a5 18. Rf3 Ba6 19. Rh3 Nb6 20. b3 Bxe2 21. Qxe2 Bxc3 22.
Rc1 Bg7 23. hxg6 fxg6 24. Qf2 Nd7 25. e5 d5 26. Qh4 Kf7 27. f5 Qxe5 28. f6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.11"]
[White "Van der Marel, Lambertus"]
[Black "Van Halderen, Herman"]
[Result "1-0"]
[WhiteElo "2161"]
[BlackElo "2052"]
[ECO "A01"]
[Opening "Nimzovich-Larsen attack"]
[Variation "modern variation"]
[WhiteFideId "1005855"]
[BlackFideId "1026682"]
[EventDate "2015.07.17"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 Bd6 5. f4 f6 6. Qh5+ g6 7. Qf3 Ne7 8. fxe5
fxe5 9. Qf6 Rf8 10. Qh4 Nf5 11. Qxd8+ Kxd8 12. Nc3 Nce7 13. O-O-O c6 14. Be2 e4
15. Rf1 Re8 16. Nh3 Be6 17. Ng5 Bg8 18. g4 Nh4 19. Nd1 Kd7 20. Bf6 h6 21. Nxe4
dxe4 22. Bxh4 g5 23. Bg3 Ba3+ 24. Kb1 Nd5 25. h4 a5 26. hxg5 hxg5 27. Rh5 Be7
28. Be5 a4 29. Nf2 axb3 30. axb3 Bb4 31. Bd4 Bxd2 32. c4 Ra3 33. cxd5 c5 34.
Bb5+ Kd8 35. Bf6+ Re7 36. Kb2 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.12"]
[White "Van Overdam, Julian"]
[Black "Polak, Alexander"]
[Result "1-0"]
[WhiteElo "2367"]
[BlackElo "2114"]
[ECO "B12"]
[Opening "Caro-Kann"]
[Variation "advance variation"]
[WhiteFideId "1015303"]
[BlackFideId "1039695"]
[EventDate "2015.07.17"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O h6 7. Be3 Ne7 8. Nh4 Bh7
9. f4 c5 10. c4 cxd4 11. Bxd4 Nc6 12. Bf2 Nb6 13. cxd5 Nxd5 14. f5 exf5 15. e6
fxe6 16. Bh5+ Kd7 17. Nc3 Kc8 18. Qb3 Nxc3 19. Qxc3 Qa5 20. Qc2 Bd6 21. Rfe1 Qc7
22. Rxe6 Nd8 23. Qxc7+ Kxc7 24. Rc1+ Kd7 25. Re2 Nc6 26. Rd1 Kc7 27. Red2 Rad8
28. Rxd6 Rxd6 29. Bg3 Rd8 30. Bg6 Bxg6 31. Nxg6 Na5 32. Ne7 g6 33. Nxg6 Kc6 34.
Ne7+ Kd7 35. Bxd6 Ke6 36. Re1+ Kxd6 37. Nxf5+ Kc6 38. Nxh6 Rd2 39. b4 Nc4 40. a4
Nb2 41. Nf7 Nd3 42. Ne5+ 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.13"]
[White "Halfhide, Sebastian"]
[Black "Sorensen, Bent"]
[Result "1-0"]
[BlackTitle "FM"]
[WhiteElo "2091"]
[BlackElo "2217"]
[ECO "C11"]
[Opening "French"]
[Variation "Steinitz, Boleslavsky variation"]
[WhiteFideId "1045946"]
[BlackFideId "1400410"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. dxc5
Bxc5 9. Qd2 O-O 10. O-O-O Qb6 11. Bxc5 Nxc5 12. Bd3 Bd7 13. f5 Nxd3+ 14. Qxd3
Nb4 15. Qd2 Rfc8 16. a3 Rxc3 17. axb4 Re3 18. f6 gxf6 19. exf6 Kf8 20. Rhe1 Rxe1
21. Rxe1 Ke8 22. Ne5 Qd6 23. Qg5 Qf8 24. Re3 Kd8 25. Qh5 Be8 26. Qxh7 a5 27. b5
a4 28. Qd3 Ra5 29. c4 Qc5 30. Kb1 Ra8 31. h4 Kc7 32. cxd5 Rd8 33. Qc2 Qxc2+ 34.
Kxc2 exd5 35. b6+ Kd6 36. h5 d4 37. Re1 Rc8+ 38. Kd3 Ke6 39. Nc4+ Kxf6 40. Nd6
Rc6 41. Nxe8+ Kf5 42. Rh1 Rh6 43. Kxd4 Kg4 44. Rh3 f5 45. Ke5 f4 46. Nf6+ Kg5
47. Nd5 Kg4 48. Nxf4 Rxb6 49. h6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.15"]
[White "Kerkvliet, Max"]
[Black "Dellert, Lena"]
[Result "1-0"]
[WhiteElo "2186"]
[BlackElo "1835"]
[ECO "A80"]
[Opening "Dutch"]
[WhiteFideId "1025546"]
[BlackFideId "12991511"]
[EventDate "2015.07.17"]

1. d4 f5 2. Nf3 Nf6 3. g3 e6 4. Bg2 d5 5. O-O Bd6 6. c4 c6 7. b3 Qe7 8. Bb2 b6
9. Ne5 Bb7 10. Nd2 O-O 11. f4 Ne4 12. Rc1 Nd7 13. cxd5 cxd5 14. Nxe4 dxe4 15.
Nc6 Bxc6 16. Rxc6 Nf6 17. e3 Rac8 18. Qc2 Rxc6 19. Qxc6 Nd5 20. Bc1 Nb4 21. Qc4
Nxa2 22. Bd2 Nb4 23. Bxb4 Bxb4 24. Kf2 Rd8 25. Rc1 Kf7 26. Bf1 a5 27. Qb5 Rd6
28. Bc4 Qd7 29. Qxf5+ Kg8 30. Qxe4 b5 31. Bd3 g6 32. Qe5 Rd5 33. Qb8+ Qd8 34.
Rc8 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.17"]
[White "Vreeburg, Jan"]
[Black "Heemskerk, Wim"]
[Result "0-1"]
[BlackTitle "FM"]
[WhiteElo "1901"]
[BlackElo "2175"]
[ECO "E12"]
[Opening "Queen's Indian"]
[Variation "4.Nc3"]
[WhiteFideId "1019066"]
[BlackFideId "1001000"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. Nc3 Bb4 5. e3 Ne4 6. Qc2 Bb7 7. Bd3 f5 8. Bd2
Nxd2 9. Kxd2 Bxf3 10. gxf3 Qh4 11. Ke2 O-O 12. Rag1 Nc6 13. Rg2 Rf7 14. Rhg1 Bd6
15. a3 Re8 16. Kd1 Kh8 17. Nb5 a6 18. Nxd6 cxd6 19. f4 e5 20. fxe5 dxe5 21. d5
Ne7 22. f3 Rc8 23. Qf2 Qf6 24. h4 b5 25. cxb5 Nxd5 26. bxa6 Qb6 27. Re1 Qb3+ 28.
Ke2 f4 29. Rd1 fxe3 30. Qg3 Nf4+ 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.24"]
[White "Campbell, Ian"]
[Black "Weiland, Harro"]
[Result "1-0"]
[WhiteElo "2005"]
[BlackElo "1890"]
[ECO "D02"]
[Opening "Queen's bishop game"]
[WhiteFideId "415219"]
[BlackFideId "1006690"]
[EventDate "2015.07.17"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 c5 5. c3 Nc6 6. Nbd2 Be7 7. Bd3 b6 8. h3 Bb7
9. Qe2 O-O 10. Ne5 Nxe5 11. dxe5 Ne4 12. Rd1 Qe8 13. O-O Nxd2 14. Rxd2 c4 15.
Bb1 Qc6 16. Qh5 g6 17. Qg4 f5 18. exf6 Bxf6 19. h4 e5 20. Bh6 Bc8 21. Qg3 e4 22.
Bxf8 Kxf8 23. f3 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.24"]
[Round "7.27"]
[White "Van der Meer, Kees"]
[Black "Van Brussel, Bert"]
[Result "1-0"]
[WhiteElo "2038"]
[BlackElo "1877"]
[ECO "D15"]
[Opening "QGD Slav"]
[Variation "4.Nc3"]
[WhiteFideId "1007793"]
[BlackFideId "1020722"]
[EventDate "2015.07.17"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. a4 g6 6. Bf4 Bg7 7. e3 Bg4 8. Bd3 O-O
9. h3 Bxf3 10. Qxf3 Nbd7 11. O-O e6 12. Rfd1 Nh5 13. Bd6 Re8 14. g4 Nhf6 15. Bg3
h6 16. a5 b5 17. axb6 Qxb6 18. cxd5 cxd5 19. Qe2 e5 20. dxe5 Nxe5 21. Rxa6 Rxa6
22. Bxa6 Nc4 23. Bxc4 dxc4 24. Qxc4 Qxb2 25. Rb1 Qa3 26. Rb7 Re7 27. Nb1 Qa1 28.
Rxe7 Qxb1+ 29. Kh2 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.1"]
[White "Chatalbashev, Boris"]
[Black "Howell, David W L"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2516"]
[BlackElo "2698"]
[ECO "E21"]
[Opening "Nimzo-Indian"]
[Variation "three knights variation"]
[WhiteFideId "2900440"]
[BlackFideId "410608"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Ne4 6. Qc2 Bb7 7. Bd3 f5 8. O-O
Bxc3 9. bxc3 O-O 10. Nd2 Qh4 11. f3 Nxd2 12. Bxd2 d6 13. Rae1 Nd7 14. e4 f4 15.
Qa4 Qe7 16. g3 g5 17. h4 gxh4 18. gxf4 Kh8 19. Kf2 h3 20. Ke2 Rg8 21. Rh1 Rg3
22. Be3 Nf6 23. Bf2 Nh5 24. Bxg3 Nxg3+ 25. Ke3 Qh4 26. Qb5 e5 27. Qd7 Qxf4+ 28.
Kf2 Qd2+ 29. Be2 Nxe4+ 30. fxe4 Rf8+ 31. Kg3 Bc8 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.2"]
[White "Postny, Evgeny"]
[Black "Milov, Leonid"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2642"]
[BlackElo "2462"]
[ECO "D11"]
[Opening "QGD Slav"]
[Variation "3.Nf3"]
[WhiteFideId "2804344"]
[BlackFideId "14101068"]
[EventDate "2015.07.17"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nbd2 f5 5. g3 Nf6 6. Bg2 Bd6 7. O-O O-O 8. b3 Qe7
9. Bb2 Nbd7 10. Ne5 a5 11. Qc2 Ne4 12. Ndf3 a4 13. Rab1 axb3 14. axb3 Nxe5 15.
Nxe5 Bd7 16. Ra1 Rfc8 17. Nd3 Be8 18. e3 h5 19. f3 Nf6 20. Qe2 Bg6 21. Bc3 Bh7
22. Qd2 Bg6 23. Bb4 Bxb4 24. Nxb4 h4 25. Nd3 hxg3 26. hxg3 Ra3 27. Qb2 Rca8 28.
c5 Rxa1 29. Rxa1 Rb8 30. b4 Be8 31. Qf2 Nh5 32. g4 fxg4 33. fxg4 Nf6 34. Qf4 Rd8
35. Ra7 Nh7 36. Ne5 Qc7 37. Bf1 Qb8 38. Ra2 Qc7 39. Bd3 Nf6 40. g5 Nh5 41. Qg4
Qe7 42. g6 Nf6 43. Qf3 Nh5 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.3"]
[White "Tiviakov, Sergei"]
[Black "Nikolic, Predrag"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2639"]
[BlackElo "2601"]
[ECO "C55"]
[Opening "Two knights defence (Modern bishop's opening)"]
[WhiteFideId "1008013"]
[BlackFideId "14400014"]
[EventDate "2015.07.17"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. c3 O-O 6. Bb3 d6 7. O-O Na5 8. Bc2
c5 9. d4 cxd4 10. cxd4 Nc6 11. d5 Nb4 12. Bb3 a5 13. a3 Na6 14. Bc2 Bd7 15. Bd2
a4 16. Re1 b5 17. Nc3 Qb8 18. Na2 Rc8 19. h3 Bd8 20. Nb4 Bb6 21. Nxa6 Rxa6 22.
Bd3 Ra7 23. Bb4 Bc5 24. Qd2 Rac7 25. Kh2 Nh5 26. g3 g6 27. Nh4 Bxb4 28. axb4 Qb6
29. Re2 Ng7 30. f4 exf4 31. gxf4 Qd4 32. Nf3 Qf6 33. Rg1 Nh5 34. f5 a3 35. bxa3
Rc3 36. e5 dxe5 37. Rxe5 Kh8 38. Rge1 Kg7 39. R1e3 Rxa3 40. Bb1 Rxe3 41. Qxe3
Qd6 42. Kg2 Qxb4 43. fxg6 Rc3 44. Qd2 Bxh3+ 45. Kh2 Nf6 46. gxh7 Ng4+ 47. Kh1
Qxb1+ 48. Ne1 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.4"]
[White "De Jong, Jan-Willem"]
[Black "Das, Arghyadip"]
[Result "1/2-1/2"]
[WhiteTitle "IM"]
[BlackTitle "IM"]
[WhiteElo "2448"]
[BlackElo "2457"]
[ECO "D45"]
[Opening "QGD semi-Slav"]
[Variation "Stoltz variation"]
[WhiteFideId "1008641"]
[BlackFideId "5003610"]
[EventDate "2015.07.17"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e3 Nf6 5. Nf3 Nbd7 6. Qc2 Bd6 7. Bd3 O-O 8. O-O
dxc4 9. Bxc4 e5 10. h3 Qe7 11. Bb3 b6 12. Nh4 g6 13. Nf3 Ba6 14. Re1 e4 15. Nh2
Rae8 16. Bd2 c5 17. Ba4 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.5"]
[White "Petrov, Marian"]
[Black "Palit, Somak"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "IM"]
[WhiteElo "2487"]
[BlackElo "2360"]
[ECO "B56"]
[Opening "Sicilian"]
[WhiteFideId "2901773"]
[BlackFideId "5010454"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 d6 4. d4 cxd4 5. Nxd4 Nf6 6. f4 e5 7. Nf3 Be7 8. f5
O-O 9. Bg5 Nxe4 10. Nxe4 Bxg5 11. Nfxg5 d5 12. g4 h6 13. Nxf7 Rxf7 14. Ng3 b5
15. Qd2 Bb7 16. O-O-O Rc8 17. Kb1 b4 18. Rc1 Qb6 19. g5 hxg5 20. Bh3 Na5 21. b3
Nc4 22. bxc4 dxc4 23. Rhd1 c3 24. Qd6 Qa5 25. Qe6 Rc6 26. Qb3 Kf8 27. Ne4 Ba6
28. Qd5 Qxd5 29. Rxd5 Bc4 30. Rd8+ Ke7 31. Rcd1 Rc7 32. Rb8 Rf8 33. Rxb4 Be2 34.
Rd5 g4 35. Rxe5+ Kd7 36. Rd4+ Kc8 37. Nd6+ Kb8 38. Bxg4 Bxg4 39. Rxg4 Rd8 40.
Rb4+ Ka8 41. a4 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.6"]
[White "Johansson, Gunnar"]
[Black "Pijpers, Arthur"]
[Result "0-1"]
[WhiteElo "2223"]
[BlackElo "2433"]
[ECO "D11"]
[Opening "QGD Slav"]
[Variation "4.e3"]
[WhiteFideId "1703501"]
[BlackFideId "1019554"]
[EventDate "2015.07.17"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Bd3 Nbd7 6. O-O dxc4 7. Bxc4 Bd6 8. b3
e5 9. Bb2 Qe7 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. Bxe5 Qxe5 13. Nd2 O-O 14. Nf3 Qe7
15. Qc2 Bg4 16. Rfd1 Bxf3 17. gxf3 Rfd8 18. a4 a5 19. Rxd8+ Rxd8 20. Rd1 g6 21.
Rxd8+ Qxd8 22. Kg2 Qd6 23. Qd3 Qxd3 24. Bxd3 Nd7 25. f4 Nc5 26. Bc2 Kf8 27. Kf3
Ke7 28. e4 Kd6 29. Kg4 Ne6 30. e5+ Kd5 31. f5 Nd4 32. fxg6 hxg6 33. Bd1 Kxe5 34.
Kg5 Ne6+ 35. Kh6 b5 36. Kh7 Kf6 37. Kg8 Ke7 38. h4 bxa4 39. bxa4 Nd4 40. h5 gxh5
41. Bxh5 f6 42. Bf7 c5 43. Ba2 Nc2 44. Kg7 Na3 45. Kg6 c4 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.7"]
[White "Van der Raaf, Erik"]
[Black "Erwich, Frank"]
[Result "1/2-1/2"]
[BlackTitle "FM"]
[WhiteElo "2110"]
[BlackElo "2361"]
[ECO "D01"]
[Opening "Richter-Veresov attack"]
[WhiteFideId "1004115"]
[BlackFideId "1007076"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 c5 4. e3 Nc6 5. dxc5 e6 6. Nf3 Bxc5 7. Bd3 O-O 8. O-O
h6 9. Bh4 Be7 10. Bg3 Nh5 11. Ne5 Nxg3 12. Nxc6 bxc6 13. hxg3 Qa5 14. Qe1 Rb8
15. Nd1 Qc7 16. c4 e5 17. Rc1 Bb4 18. Nc3 Ba6 19. a3 Be7 20. Na4 c5 21. Nc3 Rfd8
22. e4 dxc4 23. Be2 Rxb2 24. Nd5 Qb7 25. Bxc4 Bxc4 26. Rxc4 Bf8 27. Qa5 Rb8 28.
Rfc1 Rb1 29. Rxb1 Qxb1+ 30. Kh2 Qf1 31. Rc2 Rb1 32. g4 h5 33. Qd8 Qh1+ 34. Kg3
Qd1 35. gxh5 Qxh5 36. Ne7+ Kh7 37. Nf5 Qg6+ 38. Kh2 Qh5+ 39. Kg3 Kg8 40. Rxc5
Qg6+ 41. Kh2 Qh5+ 42. Kg3 Qg6+ 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.8"]
[White "Gindi, Shachar"]
[Black "Van der Marel, Lambertus"]
[Result "1/2-1/2"]
[WhiteTitle "FM"]
[WhiteElo "2336"]
[BlackElo "2161"]
[ECO "A09"]
[Opening "Reti opening"]
[WhiteFideId "2804182"]
[BlackFideId "1005855"]
[EventDate "2015.07.17"]

1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. Nc3 g6 5. d4 Bg7 6. Be2 O-O 7. O-O Bg4 8. cxd5
cxd5 9. Qb3 Bc8 10. Ne5 e6 11. Bd2 Nfd7 12. f4 Nc6 13. Nxc6 bxc6 14. Na4 Rb8 15.
Qa3 Re8 16. Bb4 Nf6 17. Rac1 Bd7 18. Bd6 Ra8 19. Bd3 Ng4 20. Be2 Nf6 21. Bf3 Qa5
22. Rf2 c5 23. Nxc5 Qxa3 24. bxa3 Rec8 25. Rfc2 Ne8 26. Be7 Rc7 27. Nxd7 Rxd7
28. Bb4 Bf8 29. Rc8 Rd8 30. Rxd8 Rxd8 31. Rc6 Rb8 32. Ra6 Rb7 33. Be2 Nf6 34. h3
h5 35. Bd3 Kg7 36. Kf2 Bxb4 37. axb4 Rxb4 38. Rxa7 Ne4+ 39. Bxe4 dxe4 40. a4 h4
41. a5 Rb2+ 42. Kf1 Rb3 43. Kf2 Rb2+ 44. Kf1 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.9"]
[White "Van Delft, Merijn"]
[Black "Visser, Henk-Jan"]
[Result "1/2-1/2"]
[WhiteTitle "IM"]
[WhiteElo "2428"]
[BlackElo "2272"]
[ECO "A05"]
[Opening "Reti opening"]
[WhiteFideId "1004670"]
[BlackFideId "1010204"]
[EventDate "2015.07.17"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O c5 5. c4 g6 6. Nc3 Bg7 7. d4 cxd4 8. Nxd4
Bxg2 9. Kxg2 Qc8 10. Qd3 Nc6 11. b3 Qb7 12. Qf3 O-O-O 13. Nxc6 dxc6 14. Bg5 c5
15. Rad1 Qxf3+ 16. Kxf3 Rhe8 17. Rxd8+ Rxd8 18. Bxf6 Bxf6 19. Nd5 Rd7 20. Rd1 e6
21. Ne3 Rxd1 22. Nxd1 Kb7 23. Ne3 Kc6 24. a4 Kd6 25. Ng2 Bg5 26. Ke4 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.10"]
[White "Heemskerk, Wim"]
[Black "Van Overdam, Julian"]
[Result "1/2-1/2"]
[WhiteTitle "FM"]
[WhiteElo "2175"]
[BlackElo "2367"]
[ECO "A15"]
[Opening "English opening"]
[WhiteFideId "1001000"]
[BlackFideId "1015303"]
[EventDate "2015.07.17"]

1. Nf3 Nf6 2. c4 h6 3. g3 g5 4. d4 g4 5. Ne5 d6 6. Nd3 Bg7 7. Nc3 O-O 8. Bg2 Nc6
9. e3 e5 10. d5 Ne7 11. e4 Nh7 12. h3 gxh3 13. Bxh3 f5 14. exf5 Nxf5 15. Ne4 Nd4
16. Bg2 Qe8 17. Bxh6 Qg6 18. Bxg7 Kxg7 19. Rh4 Kg8 20. Kd2 b5 21. cxb5 Ng5 22.
Nxg5 Qxg5+ 23. f4 Qxg3 24. Qh1 Bf5 25. Be4 Bxe4 26. Rg1 Nf3+ 27. Qxf3 Qxg1 28.
Qxe4 Rf7 29. fxe5 Rg7 30. exd6 Qg5+ 31. Kc2 Qg2+ 32. Kc3 Qxe4 33. Rxe4 cxd6 34.
Nb4 Rg3+ 35. Kc4 Rg2 36. Kb3 Rf8 37. Re7 Rff2 38. Rxa7 Rxb2+ 39. Kc3 Rg4 40.
Kxb2 Rxb4+ 41. Kc3 Rxb5 42. Kc4 Rc5+ 43. Kd4 Kf8 44. Rd7 Ra5 45. Rxd6 Ke7 46.
Re6+ Kd7 47. Re2 Kd6 48. Re6+ 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.11"]
[White "Wilschut, Peter"]
[Black "Kerkvliet, Max"]
[Result "1/2-1/2"]
[WhiteElo "2238"]
[BlackElo "2186"]
[ECO "A14"]
[Opening "English"]
[Variation "Neo-Catalan declined"]
[WhiteFideId "1007165"]
[BlackFideId "1025546"]
[EventDate "2015.07.17"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. O-O O-O 6. b3 b6 7. Bb2 Bb7 8. e3 c5
9. Qe2 Nc6 10. d3 Qc7 11. e4 dxe4 12. dxe4 e5 13. Nc3 Nd4 14. Nxd4 cxd4 15. Nd5
Nxd5 16. exd5 Bc5 17. Qd2 Qd6 18. f4 f6 19. fxe5 fxe5 20. Be4 b5 21. Qd3 h6 22.
Rxf8+ Rxf8 23. Rf1 bxc4 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.12"]
[White "Kolodkin, Daniil"]
[Black "Halfhide, Sebastian"]
[Result "1/2-1/2"]
[WhiteElo "2208"]
[BlackElo "2091"]
[ECO "A22"]
[Opening "English opening"]
[WhiteFideId "1039776"]
[BlackFideId "1045946"]
[EventDate "2015.07.17"]

1. c4 Nf6 2. Nc3 e5 3. e3 d5 4. cxd5 Nxd5 5. Nf3 Nxc3 6. bxc3 Bd6 7. e4 O-O 8.
Bc4 Qe7 9. O-O Be6 10. Bxe6 Qxe6 11. Re1 Nd7 12. d4 Rae8 13. d5 Qe7 14. Bg5 f6
15. Be3 g6 16. Rb1 b6 17. h4 Kh8 18. Bh6 Rg8 19. Qd2 Nc5 20. g3 f5 21. Ng5 Qf6
22. exf5 gxf5 23. f4 Ne4 24. Rxe4 fxe4 25. fxe5 Bc5+ 26. Kg2 Rxe5 27. Rf1 Rf5
28. Nxe4 Qg6 29. Rxf5 Qxf5 30. Qf4 Qxf4 31. Bxf4 Re8 32. Kf3 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.14"]
[White "Van der Elburg, Freddie"]
[Black "Oosterom, Erik"]
[Result "0-1"]
[WhiteElo "2185"]
[BlackElo "2043"]
[ECO "A03"]
[Opening "Bird's opening"]
[WhiteFideId "1007904"]
[BlackFideId "1003470"]
[EventDate "2015.07.17"]

1. f4 d5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. d3 c5 7. c3 Nc6 8. Na3 d4
9. Bd2 Nd5 10. Qe1 Rb8 11. Kh1 b6 12. cxd4 Nxd4 13. Ne5 Bb7 14. e3 Nc6 15. Nac4
Ndb4 16. Nxc6 Nxc6 17. Qb1 b5 18. Na3 a6 19. Bc3 e5 20. Bxe5 Nxe5 21. fxe5 Bxg2+
22. Kxg2 Qd5+ 23. e4 Qxe5 24. Rf2 f5 25. Qe1 fxe4 26. Re2 e3 27. Nc2 Qd5+ 28.
Kg1 Qxd3 29. Rd1 Qe4 30. b4 c4 31. Nxe3 Rbe8 32. Qd2 Bh6 33. Rde1 Qd3 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.15"]
[White "Wallgren, Ulf"]
[Black "Van Briemen, Willem"]
[Result "1-0"]
[WhiteElo "2141"]
[BlackElo "2041"]
[ECO "C02"]
[Opening "French"]
[Variation "advance, Euwe variation"]
[WhiteFideId "1706527"]
[BlackFideId "1026445"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. dxc5 Bxc5 7. b4 Be7 8. b5 Na5
9. Bd3 Qb6 10. a4 Bc5 11. O-O Ne7 12. Ra2 f6 13. Nbd2 O-O-O 14. Nb3 Nxb3 15.
Qxb3 a5 16. Rd2 Be8 17. Ba3 Bg6 18. Bxc5 Qxc5 19. Nd4 Bxd3 20. Rxd3 Qb6 21. Re1
f5 22. c4 Kb8 23. c5 Qxc5 24. Nxe6 Qc8 25. Nxd8 Rxd8 26. Qc3 b6 27. Rc1 Qxc3 28.
Rcxc3 g6 29. f4 Rd7 30. Kf2 Kb7 31. Ke2 Kb8 32. Rc1 Kb7 33. Ke3 Kb8 34. Kd4 Kb7
35. Rdc3 Kb8 36. h4 h5 37. g3 Kb7 38. e6 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.16"]
[White "Van Halderen, Herman"]
[Black "Jongste, David"]
[Result "1-0"]
[WhiteElo "2052"]
[BlackElo "1976"]
[ECO "E98"]
[Opening "King's Indian"]
[Variation "orthodox, Aronin-Taimanov, 9.Ne1"]
[WhiteFideId "1026682"]
[BlackFideId "1042637"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5 7. O-O Nc6 8. d5 Ne7
9. Ne1 Nd7 10. Be3 f5 11. f3 f4 12. Bf2 g5 13. a4 a5 14. Nd3 b6 15. b4 axb4 16.
Nxb4 Nf6 17. Nb5 h5 18. Nd3 g4 19. a5 bxa5 20. c5 Rf7 21. Be1 Ng6 22. Rxa5 Rxa5
23. Bxa5 Bf8 24. Qc2 g3 25. cxd6 Ng4 26. fxg4 Qh4 27. h3 hxg4 28. Ne1 f3 29.
Bxf3 Bh6 30. Bd2 Nf4 31. Bxg4 Bxg4 32. Rxf4 Rxf4 33. Bxf4 Bxf4 34. hxg4 Be3+ 35.
Kf1 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.18"]
[White "Sorensen, Bent"]
[Black "De Mooij, Marco"]
[Result "1-0"]
[WhiteTitle "FM"]
[WhiteElo "2217"]
[BlackElo "1929"]
[ECO "A04"]
[Opening "Reti opening"]
[WhiteFideId "1400410"]
[BlackFideId "1031007"]
[EventDate "2015.07.17"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 d6 4. g3 g6 5. Bg2 Nc6 6. O-O Bg7 7. a3 O-O 8. Rb1
Rb8 9. b4 cxb4 10. axb4 Bf5 11. d3 Ng4 12. Bd2 Qc8 13. b5 Nce5 14. Nh4 Be6 15.
h3 Nh6 16. Kh2 Nf5 17. Nxf5 Bxf5 18. Nd5 Re8 19. Be3 b6 20. f4 e6 21. Nb4 Nxc4
22. dxc4 Bxb1 23. Nc6 Ba2 24. Nxb8 Bxc4 25. Nc6 Qc7 26. Qa4 d5 27. Qxa7 Qxa7 28.
Nxa7 Rb8 29. Nc6 Rb7 30. Nd4 Ra7 31. Rc1 Ra3 32. Bg1 e5 33. fxe5 Bxe5 34. Nf3
Bc7 35. e4 Ra2 36. Ne1 Ra3 37. Bf2 Be5 38. exd5 Bxb5 39. Nf3 Bd6 40. Bxb6 Be2
41. Rc8+ Kg7 42. Bd4+ Kh6 43. Bc3 Ra2 44. Ne1 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.19"]
[White "Polak, Alexander"]
[Black "Campbell, Ian"]
[Result "1-0"]
[WhiteElo "2114"]
[BlackElo "2005"]
[ECO "B06"]
[Opening "Robatsch (modern) defence"]
[WhiteFideId "1039695"]
[BlackFideId "415219"]
[EventDate "2015.07.17"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. f4 e6 6. Bd3 Ne7 7. Nf3 b5 8. O-O Bb7
9. Qe1 Nbc6 10. Ne2 Qd7 11. c3 d5 12. e5 Nf5 13. Bf2 h5 14. a4 bxa4 15. Bc2 O-O
16. Bxa4 Qc8 17. h3 Na7 18. g4 hxg4 19. hxg4 Nh6 20. Bh4 Bc6 21. Qg3 Re8 22. Bg5
Kf8 23. Qh4 Ng8 24. Bf6 Bxa4 25. Rxa4 Bxf6 26. exf6 Qd8 27. g5 Qd7 28. Qh8 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.20"]
[White "Dellert, Lena"]
[Black "Happel, Henk"]
[Result "0-1"]
[BlackTitle "FM"]
[WhiteElo "1835"]
[BlackElo "2107"]
[ECO "C05"]
[Opening "French"]
[Variation "Tarrasch, Botvinnik variation"]
[WhiteFideId "12991511"]
[BlackFideId "1001078"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 b6 7. Ne2 Ba6 8. Bxa6
Nxa6 9. Nf3 Be7 10. O-O b5 11. a4 b4 12. dxc5 bxc3 13. c6 Ndc5 14. Nxc3 Nb4 15.
Nd4 Rc8 16. Qg4 Kf8 17. c7 Rxc7 18. Ndb5 Nc2 19. Nxc7 Nxa1 20. N7b5 a6 21. Nd4
Qc7 22. f4 Nab3 23. f5 Qxe5 24. Nxb3 Nxb3 25. fxe6 Nxc1 26. exf7 g6 27. Qc8+ Kg7
28. Qxa6 d4 29. Nb5 Qe3+ 30. Kh1 Nd3 31. Nc7 Nf2+ 32. Rxf2 Qxf2 33. Ne6+ Kh6 34.
h3 Qe1+ 35. Kh2 Qe5+ 36. Kg1 Bd6 37. f8=Q+ Rxf8 38. Nxf8 Qe3+ 39. Kf1 Bg3 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.25"]
[Round "8.22"]
[White "Knudsen, Martin"]
[Black "Vreeburg, Jan"]
[Result "1-0"]
[WhiteElo "2026"]
[BlackElo "1901"]
[ECO "E14"]
[Opening "Queen's Indian"]
[Variation "4.e3"]
[WhiteFideId "1406523"]
[BlackFideId "1019066"]
[EventDate "2015.07.17"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 Nc6 6. a3 d5 7. Nc3 Bd6 8. O-O Ne7
9. Nb5 Ne4 10. Qc2 Ng6 11. Nxd6+ Qxd6 12. b3 O-O 13. a4 Rfc8 14. a5 a6 15. Bb2
f5 16. Rfc1 Qc6 17. Qe2 Qd6 18. Rc2 dxc4 19. bxc4 c5 20. Nd2 cxd4 21. Bxe4 fxe4
22. Bxd4 b5 23. Rb2 Bc6 24. Qg4 e5 25. Bb6 Qd3 26. cxb5 Bxb5 27. Qxe4 Qc3 28.
Qb1 Bd3 29. Qa2+ Kh8 30. h3 Bb5 31. Qa3 Qxa3 32. Rxa3 Kg8 33. Ne4 Rc1+ 34. Kh2
Rf8 35. Rc3 Rd1 36. Bc5 Rfd8 37. Bb6 Rf8 38. f3 Rd7 39. Nc5 Rd6 40. Ne4 Rd1 41.
Rd2 Rxd2 42. Nxd2 Re8 43. Ne4 Bf1 44. Kg1 Be2 45. Kf2 Bd1 46. Nc5 e4 47. Rc1 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.26"]
[Round "9.1"]
[White "Howell, David W L"]
[Black "Petrov, Marian"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2698"]
[BlackElo "2487"]
[ECO "B30"]
[Opening "Sicilian defence"]
[WhiteFideId "410608"]
[BlackFideId "2901773"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 Nc6 3. c3 e6 4. d4 d5 5. exd5 exd5 6. Bb5 Bd6 7. dxc5 Bxc5 8.
O-O Ne7 9. Nbd2 O-O 10. Nb3 Bb6 11. Re1 Bg4 12. Be3 Re8 13. Bd3 Ng6 14. Bxg6
hxg6 15. Bxb6 Rxe1+ 16. Qxe1 Qxb6 17. Nfd4 a5 18. h3 Bd7 19. Nxc6 bxc6 20. Qe7
a4 21. Qa3 Re8 22. Qxa4 Re2 23. Qd4 Qb8 24. c4 Re4 25. Qd2 Rxc4 26. Rc1 Rb4 27.
Nc5 Bf5 28. b3 Rh4 29. Qe3 Qb4 30. a4 Kh7 31. Kh2 d4 32. Qg3 d3 33. Nxd3 Bxd3
34. Qxd3 c5 35. Rc4 Qb8+ 36. Qg3 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.26"]
[Round "9.2"]
[White "Nikolic, Predrag"]
[Black "Postny, Evgeny"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2601"]
[BlackElo "2642"]
[ECO "D10"]
[Opening "QGD Slav defence"]
[WhiteFideId "14400014"]
[BlackFideId "2804344"]
[EventDate "2015.07.17"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 a6 5. Bd2 b5 6. cxd5 cxd5 7. Bd3 e6 8. f4 Bb7
9. Nf3 Nbd7 10. O-O Be7 11. Ne5 O-O 12. Ne2 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.26"]
[Round "9.3"]
[White "De Jong, Jan-Willem"]
[Black "Chatalbashev, Boris"]
[Result "1/2-1/2"]
[WhiteTitle "IM"]
[BlackTitle "GM"]
[WhiteElo "2448"]
[BlackElo "2516"]
[ECO "B09"]
[Opening "Pirc"]
[Variation "Austrian attack, 6.e5"]
[WhiteFideId "1008641"]
[BlackFideId "2900440"]
[EventDate "2015.07.17"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. e5 dxe5 7. fxe5 Nd5 8. Bc4
Be6 9. Nxd5 Bxd5 10. Bxd5 Qxd5 11. Qe2 b5 12. O-O Nc6 13. c3 f6 14. exf6 exf6
15. a4 bxa4 16. Rxa4 Rf7 17. Qc4 Qxc4 18. Rxc4 Na5 19. Rc5 Nb7 20. Rc6 Na5 21.
Rc5 Nb7 22. Rc6 Na5 23. Ra6 Nb3 24. Be3 Bf8 25. Nd2 Nxd2 26. Bxd2 c5 27. Rfxf6
Rb7 28. b4 cxb4 29. cxb4 Rd8 30. Bc3 Rdd7 31. Rfc6 Bxb4 32. Bxb4 Rxb4 33. d5
Rb1+ 34. Kf2 Rb2+ 35. Kf3 Rxd5 36. Rxa7 Rf5+ 37. Ke3 Rxg2 38. Rc8+ Rf8 39. Rxf8+
Kxf8 40. Rxh7 Kg8 41. Kd4 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.26"]
[Round "9.4"]
[White "Das, Arghyadip"]
[Black "Pijpers, Arthur"]
[Result "1/2-1/2"]
[WhiteTitle "IM"]
[WhiteElo "2457"]
[BlackElo "2433"]
[ECO "C11"]
[Opening "French"]
[Variation "Steinitz, Boleslavsky variation"]
[WhiteFideId "5003610"]
[BlackFideId "1019554"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 Be7
9. dxc5 Nxc5 10. O-O-O Qa5 11. Kb1 b5 12. Ne2 Qxd2 13. Nxd2 Bd7 14. Nd4 Nxd4 15.
Bxd4 O-O 16. g3 b4 17. Bg2 Bb5 18. Rhe1 a5 19. h4 a4 20. Re3 Rac8 21. h5 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.26"]
[Round "9.5"]
[White "Van der Marel, Lambertus"]
[Black "Tiviakov, Sergei"]
[Result "0-1"]
[BlackTitle "GM"]
[WhiteElo "2161"]
[BlackElo "2639"]
[ECO "A01"]
[Opening "Nimzovich-Larsen attack"]
[Variation "Indian variation"]
[WhiteFideId "1005855"]
[BlackFideId "1008013"]
[EventDate "2015.07.17"]

1. b3 Nf6 2. Bb2 d5 3. e3 g6 4. f4 Bg7 5. Nf3 O-O 6. Be2 c5 7. O-O Nc6 8. h3 d4
9. Qe1 Nb4 10. Na3 d3 11. cxd3 Nxd3 12. Bxd3 Qxd3 13. Nc4 Be6 14. Rc1 Rac8 15.
Ng5 Bxc4 16. Rxc4 Rfd8 17. Rf2 h6 18. Bxf6 Bxf6 19. Nf3 b5 20. Rc1 Qe4 21. Qf1
c4 22. bxc4 Rxc4 23. Rxc4 bxc4 24. Ne5 c3 25. dxc3 Qxe3 26. Ng4 Qxc3 27. Nxf6+
Qxf6 28. Kh1 e6 29. Qe2 h5 30. Rf1 Rd5 31. Qa6 Qd4 32. Qc8+ Kg7 33. Qb8 Ra5 34.
Qb3 Qd2 35. a3 Rc5 36. a4 Qd4 0-1

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.26"]
[Round "9.6"]
[White "Milov, Leonid"]
[Black "Van der Raaf, Erik"]
[Result "1-0"]
[WhiteTitle "GM"]
[WhiteElo "2462"]
[BlackElo "2110"]
[ECO "C11"]
[Opening "French"]
[Variation "Steinitz variation"]
[WhiteFideId "14101068"]
[BlackFideId "1004115"]
[EventDate "2015.07.17"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nce2 c5 6. c3 Nc6 7. Nf3 Be7 8. a3 a5
9. b3 g5 10. Be3 cxd4 11. cxd4 Nb6 12. Nc3 Bd7 13. Na4 Na7 14. Nc5 Bc6 15. a4
Nd7 16. h3 b6 17. Nd3 b5 18. Nc5 bxa4 19. bxa4 Nc8 20. Qc1 Ncb6 21. Nxe6 fxe6
22. Qxc6 Kf7 23. Qc1 Rg8 24. Bd3 Rc8 25. Qd1 Rg7 26. h4 gxh4 27. Nxh4 Nc4 28.
Bh6 Ra8 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.26"]
[Round "9.7"]
[White "Erwich, Frank"]
[Black "Van Delft, Merijn"]
[Result "1/2-1/2"]
[WhiteTitle "FM"]
[BlackTitle "IM"]
[WhiteElo "2361"]
[BlackElo "2428"]
[ECO "B10"]
[Opening "Caro-Kann"]
[Variation "anti-anti-Caro-Kann defence"]
[WhiteFideId "1007076"]
[BlackFideId "1004670"]
[EventDate "2015.07.17"]

1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Nf6 5. Nc3 Nxd5 6. Nf3 Nc6 7. d4 Bf5 8.
Bb5 e6 9. Ne5 Nb4 10. O-O Bd6 11. Bf4 O-O 12. Bg3 Bxe5 13. dxe5 Qb6 14. Bxc6
Nxc6 15. Qb3 Qxb3 16. axb3 Rfd8 17. Rfd1 Rxd1+ 18. Rxd1 Rd8 1/2-1/2

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.26"]
[Round "9.8"]
[White "Van Overdam, Julian"]
[Black "Van Halderen, Herman"]
[Result "1-0"]
[WhiteElo "2367"]
[BlackElo "2052"]
[ECO "B23"]
[Opening "Sicilian"]
[Variation "Grand Prix attack"]
[WhiteFideId "1015303"]
[BlackFideId "1026682"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. O-O a6 7. Bd3 e6 8. e5 Ne7
9. Ne4 Nxf3+ 10. Qxf3 Nf5 11. g4 d5 12. Nxc5 Nd4 13. Qf2 Nc6 14. c3 b6 15. Nb3
Bb7 16. Bc2 d4 17. Be4 Rb8 18. d3 O-O 19. Bd2 Qd7 20. Nxd4 Nxd4 21. Qxd4 Qxd4+
22. cxd4 Rfd8 23. Be3 b5 24. Rac1 Bf8 25. f5 exf5 26. gxf5 Bd5 27. Bxd5 Rxd5 28.
Rc7 1-0

[Event "9th Leiden Open A 2015"]
[Site "Leiden NED"]
[Date "2015.07.26"]
[Round "9.9"]
[White "Palit, Somak"]
[Black "Heemskerk, Wim"]
[Result "1/2-1/2"]
[WhiteTitle "IM"]
[BlackTitle "FM"]
[WhiteElo "2360"]
[BlackElo "2175"]
[ECO "B40"]
[Opening "Sicilian defence"]
[WhiteFideId "5010454"]
[BlackFideId "1001000"]
[EventDate "2015.07.17"]

1. e4 c5 2. Nf3 e6 3. b3 a6 4. Bb2 Nc6 5. Be2 Nf6 6. e5 Nd5 7. O-O Nf4 8. Re1
Nxe2+ 9. Qxe2 b6 10. d4 cxd4 11. Nxd4 Bb7 12. Nd2 Qc7 13. c4 Bb4 14. N4f3 Ne7
15. a3 Bxd2 16. Nxd2 Ng6 17. f3 O-O 18. a4 d6 19. exd6 Qxd6 20. Ne4 Bxe4 21.
Qxe4 Rfd8 22. Bc3 Qd3 23. Rac1 Rab8 24. Qxd3 Rxd3 25. Red1 Rbd8 26. Rxd3 Rxd3
27. Kf2 Kf8 28. g3 Ne7 29. Ke2 Rd7 30. Rd1 Rxd1 31. Kxd1 Nc6 32. b4 f6 33. b5
axb5 34. axb5 Nb8 35. Bd4 Nd7 36. Kc2 Ke8 37. Kc3 Kd8 38. Kb4 Kc7 39. f4 g6 40.
g4 Kb7 41. g5 f5 42. c5 bxc5+ 43. Bxc5 e5 44. Be3 exf4 45. Bxf4 Nf8 46. h4 Ne6
47. Be3 f4 48. Bf2 Ng7 49. Kc4 Nf5 50. Kd5 h6 51. Ke5 hxg5 52. hxg5 f3 53. Bc5
Ng3 54. Kf4 Nf5 55. Kxf3 Ng7 56. Be3 Ne6 57. Kg4 Kc7 58. Bf2 1/2-1/2

