[Event "87th Tata Steel Masters"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4"]
[White "Harikrishna, Pentala"]
[Black "Warmerdam, Max"]
[Result "1-0"]
[Annotator "Abeln,Michiel"]
[ECO "E04"]
[WhiteElo "2695"]
[BlackElo "2646"]
[PlyCount "45"]
[GameId "2136635048298342"]
[EventDate "2025.01.18"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. O-O e6 6. c4 dxc4 7. dxc5 Qxd1 8. Rxd1 Bxc5 9. Nbd2 b5 {Warmerdam plays a sharp line.} 10. a4 (10. Ne5 Nxe5 11. Bxa8 Ke7) 10... Ba6 11. Ng5 (11. axb5 Bxb5 12. Ne5 Rc8 13. Nxc6 Bxc6 14. Nxc4 {1/2-1/2 (14) Lodici,L (2487)-Warmerdam,M (2535) Villorba 2021}) 11... Nd5 (11... Rc8 12. Nde4 Bb4 13. Bd2 Nxe4 14. Nxe4 Be7 15. axb5 Bxb5 16. Nc3 Nd4 17. e3 Nb3 18. Nxb5 Nxa1 19. Rxa1 Bc5 20. Nxa7 Rd8 21. Bc6+ Ke7 22. Bc3 Kd6 23. Bf3 f6 24. Ra6+ Kd7 25. Ra4 Ra8 26. Bxa8 Rxa8 27. Rxc4 Bxa7 28. Ra4 e5 29. h4 h5 30. Ra6 Kc7 31. Bb4 Kb7 32. Re6 Rg8 33. Kg2 Bb8 34. Kf3 Kc7 35. Ke4 Kd7 36. Kf5 Bc7 37. Re7+ Kc6 38. Kg6 Rb8 39. Bc3 e4 40. Kxh5 Bd6 41. Rxe4 Kd5 42. Ra4 Ke6 43. Kg6 Bf8 44. g4 Rc8 45. f4 Rd8 46. Re4+ Kd5 {1-0 (46) Harikrishna,P (2617) -Ganguly,S (2530) Almaty 2022}) 12. Nde4 Bb4 13. Nxf7 (13. Nc3 Bxc3 14. bxc3 b4 15. Ne4 O-O 16. Nc5 Bc8 17. cxb4 Ncxb4 18. Ba3 Nc2 19. Ra2 Nxa3 20. Rxa3 Rb8 21. e4 Nf6 22. Rc3 Rb4 23. Bf1 e5 24. f3 h5 25. Bxc4 Bh3 26. Nd3 Rd8 27. Rcc1 Rxa4 28. Nxe5 Rxd1+ 29. Rxd1 Be6 30. Bxe6 fxe6 31. Rd8+ Kh7 32. h4 Ra5 33. Nd3 Ra3 34. Kf2 Nd5 35. Nc5 Ra2+ 36. Ke1 Ra1+ 37. Kd2 Ra2+ 38. Kc1 Ne3 39. Nxe6 Rc2+ 40. Kb1 Rc6 41. Nf8+ Kh6 42. e5 Rb6+ 43. Ka2 Nf5 44. g4 hxg4 45. fxg4 Nxh4 46. e6 Ng6 47. Rd5 Ra6+ 48. Kb3 Rb6+ 49. Ka4 Nf4 50. e7 Rb4+ 51. Ka3 Re4 52. Rd4 Re3+ 53. Ka4 Kg5 54. Rd7 Kf6 55. Nh7+ Kg6 56. Nf8+ Kf7 57. Rxa7 Rxe7 58. Rxe7+ Kxe7 59. Nh7 Ne6 60. Kb4 Kf7 61. g5 Kg6 62. Nf6 Kxg5 63. Ne8 g6 64. Kc3 Kf4 65. Nf6 Kf3 66. Kd2 g5 67. Ke1 Nd4 68. Kf1 Nc6 69. Kg1 Ne5 70. Nh7 g4 71. Nf6 g3 72. Nh5 g2 73. Nf4 Kxf4 74. Kxg2 {1/2-1/2 (74) Keymer,V (2664)-Aronian, L (2772) chess24.com INT 2022}) 13... Kxf7 14. Ng5+ Kf6 15. Nxe6 Nce7 16. axb5 Bb7 17. Nd4 Kf7 18. Ra4 c3 (18... Bd6 19. Nf3 h6) 19. Rd3 a5 20. bxc3 Bxc3 {Not the right move.} (20... Rac8 {This was a must.} 21. Bd2 Bxc3 22. Rf3+ Kg6 23. Nc6) 21. Rf3+ (21. Nc6 {White could have achieved a large advantage:} Bxc6 22. bxc6 Nb6 23. Rf4+ Bf6 24. Be3 a4 25. Bxb6 a3 26. Rd7 {This final move was missed by Harikrishna, otherwise he would have played this line.}) 21... Kg6 $4 {A blunder, Black was still ok.} (21... Ke8 $1 $11 22. Rxc3 Nxc3 23. Bxb7 Nxa4 24. Bxa8 Nb6 25. Be4 Kf7 {And Black is fine}) 22. Nc6 Bf6 23. Ne5+ {Warmerdam admitted afterwards he had missed this move.} (23. Ne5+ Bxe5 24. Rg4+ Kh5 25. Rg5+ Kh6 26. Rxe5+ g5 27. Bxg5+ Kg7 28. Bxe7 {wins everything.}) 1-0

[Event "87th Tata Steel Masters"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4"]
[White "Caruana, Fabiano"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[Annotator "Abeln,Michiel"]
[ECO "B31"]
[WhiteElo "2803"]
[BlackElo "2731"]
[PlyCount "68"]
[GameId "2136633963459852"]
[EventDate "2025.01.18"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. Bxc6 bxc6 7. c3 Ne7 8. d4 cxd4 9. cxd4 exd4 10. Nxd4 O-O 11. Nc3 Rb8 12. Nb3 Qc7 ({Relevant:} 12... d5 13. Bg5 Rb7 14. exd5 cxd5 15. Rxe7 Rxe7 16. Nxd5 Re1+ 17. Qxe1 Qxd5 18. Qd2 Qxd2 19. Bxd2 Bxb2 20. Rb1 Bg7 21. Be3 Be6 22. Bxa7 Ra8 {½-½ Saric,I (2575)-Zvjaginsev,V (2674) Lindores Abbey Blitz Tal Memorial Riga 2021 (6.19)}) 13. Bg5 d6 14. Rc1 (14. Qd2 Be6 15. Nd4 Nc8 16. Rac1 Qb6 17. Nxe6 fxe6 18. b3 Rb7 19. Be3 Qa5 20. Bd4 Rbf7 21. Re2 Bxd4 22. Qxd4 Qg5 23. Qd2 Qe5 24. Nd1 c5 25. f3 Ne7 26. Ne3 Nc6 27. Nc4 Qd4+ 28. Qxd4 Nxd4 29. Rd2 Rd7 30. e5 dxe5 31. Nxe5 Rd5 32. Re1 Rfd8 33. Rb2 Rb8 34. Nc4 Kf7 35. Kf2 h5 36. Rc1 Nf5 37. Nd2 Nd6 38. Rbc2 Rb4 39. Nf1 Rb5 40. Ne3 Rd4 41. Ke2 Ra5 42. Nd1 Rd5 43. Nc3 Rd4 44. Nd1 Rd5 45. Kf2 Rd4 46. Ne3 Kf6 47. Re2 Kf7 48. Rc3 Kf6 49. Rec2 Nb7 50. Nc4 Ra6 51. Nd2 Rd5 52. Ne4+ Ke7 53. h4 Ra5 54. a4 Ra6 55. Nd2 Rb6 56. Nc4 Rb4 57. g3 Kf6 58. Nd2 Rbd4 59. Nc4 Rd3 60. Rxd3 Rxd3 61. Nd2 Ke5 62. Ke2 Rd4 63. Rc3 Kd5 64. Nc4 Nd6 65. Ne3+ Kc6 66. Nc2 e5 67. Nxd4+ exd4 68. Rc1 Kd5 69. Kd3 Nf7 70. f4 Nd6 71. Re1 Nf5 72. Re8 Nxg3 73. Re5+ {1-0 (73) Delgado Ramirez,N (2613)-Matsuura,E (2501) Concordia 2018}) 14... Be6 {[#]} 15. Nd5 $146 ({Predecessor:} 15. Bf4 Bxb3 16. axb3 Rfd8 17. Re3 Be5 18. Bg3 Qb7 19. Rd3 Bxg3 20. hxg3 Qxb3 21. Rxd6 Qxd1+ 22. Rdxd1 Rxd1+ 23. Nxd1 f6 24. Ra1 Rb7 25. g4 Kf7 26. f3 Ke6 27. Kf2 Nc8 {½-½ Mislin,R-Deues,E RR-22207-BRETT4 freechess.de 2020}) 15... Nxd5 16. exd5 Rb5 17. dxe6 Rxg5 18. Qd2 $6 (18. Nd4 $1) 18... Rf5 19. exf7+ Qxf7 {Black is slightly better but not enough to create something real.} 20. Re2 c5 21. g3 (21. Rc2) 21... Rd5 (21... h5) 22. Qc2 Re5 23. Rxe5 Bxe5 24. Re1 Rb8 25. Qd2 Rb6 26. h4 Bf6 27. Rd1 Kg7 28. Re1 h6 29. Re4 g5 30. hxg5 hxg5 31. Ra4 Kg8 32. Qc2 Rb8 33. Qf5 Be7 34. Qc2 Bf6 1/2-1/2

[Event "87th Tata Steel Masters"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4"]
[White "Sarana, Alexey"]
[Black "Gukesh, D."]
[Result "1/2-1/2"]
[Annotator "Abeln,Michiel"]
[ECO "E06"]
[WhiteElo "2677"]
[BlackElo "2777"]
[PlyCount "139"]
[GameId "2136633428337871"]
[EventDate "2025.01.18"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. g3 O-O 6. Bg2 Nc6 7. Ne5 Nxe5 8. dxe5 Nd7 9. cxd5 Nxe5 10. dxe6 (10. O-O exd5 11. Nxd5 Bd6 12. b3 c6 13. Ne3 Bc5 14. Qc2 Bd4 15. Bb2 Bxb2 16. Qxb2 Qf6 17. Qc2 Ng4 18. Nc4 Rd8 19. h3 Ne5 20. Ne3 Be6 21. f4 Nd7 22. Rad1 Nb6 23. Qc5 Re8 24. Rd2 Qe7 25. Qxe7 Rxe7 26. Rfd1 Rae8 27. Rd8 Kf8 28. Kf2 a5 29. R1d4 Rxd8 30. Rxd8+ Re8 31. Rd4 g6 32. Nd1 Nd5 33. e4 Nb4 34. Nc3 f6 35. h4 Ke7 36. Bf1 b5 37. Rd2 Na6 38. Ke3 Nc5 39. Rc2 b4 40. Nb5 Nxe4 41. Nc7 Nxg3 42. Nxe8 Nxf1+ 43. Kf2 Kxe8 44. Kxf1 Kd7 45. Ke2 Kd6 46. Ke3 c5 47. Rd2+ Kc6 48. Kd3 h6 49. Kc2 g5 50. fxg5 fxg5 51. hxg5 hxg5 52. Rh2 g4 53. Rh5 a4 54. Rg5 axb3+ 55. axb3 Kd6 56. Kb2 Ke7 57. Rxc5 Kf6 58. Kc2 g3 59. Kd2 g2 60. Rc1 Bxb3 61. Ke3 Bc2 62. Rg1 b3 63. Kd2 Be4 64. Kc3 Bd5 65. Rxg2 Bxg2 66. Kxb3 {1/2-1/2 (66) Wojtaszek,R (2668)-Aronian,L (2742) Douglas 2023}) 10... Bxe6 (10... Qxd1+ 11. Nxd1 fxe6 12. O-O c6 13. Nc3 Bd7 14. Ne4 h6 15. Rd1 Be8 16. Bf4 Nf7 17. Bh3 e5 18. Be3 b6 19. Be6 Kh7 20. h4 c5 21. Nc3 Rd8 22. Bf5+ Kh8 23. Rxd8 Nxd8 24. Be4 Ne6 25. Rd1 Nd4 26. Kg2 Bf7 27. Bc1 {1/2-1/2 (27) Wu,W (2535)-Najjar,A (2322) Dubai 2005}) 11. Bxb7 Rb8 12. Bg2 Qxd1+ 13. Nxd1 Nc4 14. O-O Bf6 15. Nc3 Rfd8 16. Ne4 Bxb2 17. Bxb2 Rxb2 18. Rfc1 f6 19. e3 h6 20. a4 a5 21. Rab1 Rb6 22. Nc5 Bf7 23. Rd1 Rdd6 24. h3 Kf8 25. Rdc1 Ke7 26. Ra1 Rb4 27. Rc2 Rdb6 (27... Rd2 {was a serious alternative.}) 28. Rac1 Rb1 29. Bf1 Ne5 ({Perhaps it would have been stronger to play} 29... R6b4 30. h4 Na3 31. Rc3 Rxc1 32. Rxc1 Kd6) 30. f4 Nf3+ 31. Kf2 Rxc1 32. Rxc1 Nd2 33. Be2 c6 34. Rd1 Rb2 35. Ke1 Rc2 36. Rxd2 Rxc5 37. Rb2 Be6 38. Rb7+ Kf8 39. g4 f5 40. Kd2 Rd5+ 41. Kc3 Rc5+ 42. Kd2 g5 43. Rh7 gxf4 {Maybe a dubious move, Black could have made a draw:} (43... Rd5+ 44. Kc3 Rc5+ 45. Kd4 Rd5+ 46. Kc3) 44. exf4 fxg4 45. hxg4 Bb3 46. Rxh6 Bxa4 47. Rh8+ Ke7 48. Rh7+ $11 {The game is now equal.} (48. Ra8) 48... Kd6 49. g5 Bb3 50. Bd3 a4 51. Ra7 Rd5 52. Kc3 Rc5+ 53. Kd2 Rd5 54. Ke3 Kc5 (54... Ke6) 55. g6 Kb6 (55... Rd8 $11) 56. Ra6+ Kb7 57. f5 Re5+ 58. Kf4 Rd5 59. Ke3 Rd8 60. f6 Rf8 61. g7 Rxf6 $11 62. Rxa4 Bg8 63. Rf4 Rxf4 64. Kxf4 c5 65. Ke5 Kc7 66. Be4 c4 67. Bd5 c3 68. Bxg8 c2 69. Bb3 c1=Q 70. g8=Q 1/2-1/2

[Event "87th Tata Steel Masters"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4"]
[White "Abdusattorov, Nodirbek"]
[Black "Wei Yi"]
[Result "1/2-1/2"]
[Annotator "Abeln,Michiel"]
[ECO "E24"]
[WhiteElo "2768"]
[BlackElo "2751"]
[PlyCount "69"]
[GameId "2136633209590950"]
[EventDate "2025.01.18"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 b6 6. f3 Nc6 7. e4 Na5 8. Bd3 Ba6 9. Qe2 c5 10. Nh3 cxd4 11. cxd4 Rc8 (11... Nb3 12. e5 Ng8 13. Rb1 Nxd4 14. Qf2 Nc6 15. Qg3 Qc7 16. f4 Nge7 17. O-O Ng6 18. Ng5 Nce7 19. Bd2 Nf5 20. Qh3 Bxc4 21. Rfc1 Qc5+ 22. Kh1 b5 23. Bxf5 exf5 24. Qxf5 Qd5 25. Qe4 O-O 26. Qxd5 Bxd5 27. Rxb5 Bc6 28. Rb4 Nh4 29. Kg1 h6 30. Ne4 Rfb8 31. Nd6 a5 32. Rxb8+ Rxb8 33. Be1 Nxg2 34. Rxc6 Nxe1 35. Rc3 Rb2 36. f5 Rc2 37. Rb3 g5 38. Kf1 Ng2 39. Ne8 Nf4 40. Rb8 Rc1+ 41. Kf2 Nd3+ 42. Ke3 Nxe5 43. Nf6+ Kg7 44. Nh5+ Kh7 45. Nf6+ Kg7 46. Nh5+ Kh7 47. Nf6+ {1/2-1/2 (47) Shankland,S (2674)-Dominguez Perez,L (2749) Saint Louis 2024}) 12. e5 Ng8 13. Nf2 ({White mixed up his prep, he should have played} 13. Bg5 Ne7 (13... Qc7) 14. Nf2 Nb3 (14... h6 15. Bxe7 Qxe7 16. Ne4) 15. Rd1 Nxd4 16. Qb2 Ndf5 17. Ne4) 13... d5 (13... f5 {was a serious option for Black.}) 14. exd6 Nf6 $2 {Not a great move.} (14... Bxc4 15. Ne4 Bxd3 16. Qxd3 f5 17. Ng5 Qxd6 18. O-O Nf6 (18... Ne7 19. Re1) 19. Re1 O-O 20. Nxe6 Rfe8 {and Black is fine.}) 15. Bf4 $2 ({White had a big chance here:} 15. c5 $1 Bxd3 16. Qxd3 bxc5 17. Qb5+ Nd7 18. Bd2 Nc6 19. dxc5 a6 20. Qb2 {with a clear advantage.}) 15... Bxc4 16. O-O O-O 17. Rac1 Nd5 18. Bg3 Bxd3 ({Wei Yi also considered} 18... b5) 19. Qxd3 Nb7 ({Black should probably have gone for} 19... Qd7 20. Ne4 h6) 20. Ne4 f5 ({Wei Yi looked at an alternative but the game continuation is stronger:} 20... Qd7 21. Ng5 g6 22. Rxc8 Rxc8 23. Ne4 f5 24. Be5) 21. Nc3 Nxc3 22. Rxc3 Rxc3 23. Qxc3 f4 24. Bf2 Qxd6 $11 (24... Nxd6) 25. Rc1 h6 26. h3 Na5 27. Kh2 Qd5 28. Qc7 Rf7 29. Qc8+ Kh7 30. Re1 Qd7 31. Qxd7 Rxd7 32. Rxe6 Nc4 33. a4 Nb2 34. a5 Nd3 35. Bg1 1/2-1/2

[Event "87th Tata Steel Masters"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4"]
[White "Praggnanandhaa, R.."]
[Black "Mendonca, Leon Luke"]
[Result "1-0"]
[Annotator "Abeln,Michiel"]
[ECO "C77"]
[WhiteElo "2741"]
[BlackElo "2639"]
[PlyCount "91"]
[GameId "2136632521536285"]
[EventDate "2025.01.18"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Bc5 7. Bg5 h6 8. Bh4 d6 9. c3 Bb6 ({Relevant:} 9... Ba7 10. O-O Na5 11. Bc2 c5 12. Nbd2 g5 13. Bg3 Nh5 14. h3 Rb8 15. Kh1 Rb7 16. Nh2 Nf4 17. Ng4 h5 18. Ne3 g4 19. h4 Ng6 20. Qe1 Kf8 21. f3 c4 22. dxc4 Bxe3 23. Qxe3 Nxc4 24. Nxc4 bxc4 25. b4 gxf3 26. Qxf3 Bg4 27. Qf2 Kg7 28. a4 Re8 29. Bd1 Rd7 30. a5 Nf4 31. Ba4 Nd3 32. Qb6 Re6 33. Bxd7 Qxd7 34. Qxa6 Be2 35. Rf5 Rg6 36. Kh2 d5 37. Rg5 {1-0 Vachier Lagrave,M (2721)-Ding,L (2745) Sinquefield Cup 11th Saint Louis 2024 (9)}) 10. a4 Rb8 11. axb5 axb5 12. Na3 b4 13. Nc4 {Pragg mentioned afterwards that this line is dangerous for Black if you don't know precisely what you are doing.} bxc3 14. bxc3 O-O (14... g5 15. Bg3 Bd7 16. h4 g4 17. Nfd2 h5 18. O-O Bc5 19. d4 exd4 20. e5 dxc3 21. exd6 cxd6 22. Bxd6 Bxd6 23. Nxd6+ Kf8 24. Nxf7 Qb6 25. Nxh8 cxd2 26. Qxd2 Qxb3 27. Qh6+ Kg8 28. Qxf6 Qe6 29. Qxe6+ Bxe6 30. Ng6 Bf7 31. Ra6 Nd4 32. Ne5 Be8 33. Rd1 Rd8 34. Kh1 Rd5 35. Nc6 {1-0 (35) Sethuraman,S (2582)-Sivuk,V (2490) Sitges 2023}) 15. O-O {[#]} Kh8 $146 (15... Be6 {was probably more solid.}) ({Predecessor:} 15... Be6 16. Ba2 g5 17. Nxg5 hxg5 18. Bxg5 Bxc4 19. Bxc4 Kg7 20. Kh1 Qd7 21. f4 Ng4 22. f5 Nf6 23. Rf3 Rh8 24. Rg3 Nh5 25. f6+ Kf8 26. Rh3 Qxh3 27. gxh3 Nf4 28. Bxf4 exf4 29. Qg4 Rg8 30. Qd7 f3 31. Qxf7# {1-0 Pichot,A (2625)-Nguyen,T (2609) Wch Blitz Warsaw 2021 (13)}) 16. Ba4 Bd7 $2 17. Rb1 (17. Re1 {was better.}) 17... g5 18. Bg3 Ba7 19. Ra1 Bb6 $6 (19... Bc5) 20. Re1 {Black has gone wrong in the opening and has no counterplay.} Ne7 21. d4 {Opening the center.} Bxa4 22. Rxa4 exd4 23. cxd4 Ng6 24. e5 Nh5 $6 (24... Nd5) 25. exd6 Nxg3 26. dxc7 Qxc7 27. hxg3 Rbe8 {White is winning.} 28. Ne3 Qd7 29. Qa1 Kh7 30. Ra6 Rb8 31. Nc4 Bc7 32. Ra7 Qc6 33. Rc1 Ra8 34. d5 Rxa7 35. Qxa7 Ra8 36. Qd4 $1 Qd7 37. d6 Bd8 38. Nce5 Qe6 39. Nxg6 fxg6 40. Re1 Qf7 41. Qe4 (41. Ne5) 41... Ra7 42. Ne5 Qe6 43. Nc6 Qxe4 44. Rxe4 Rd7 45. Re6 h5 46. Kh2 1-0

[Event "87th Tata Steel Masters"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4"]
[White "Keymer, Vincent"]
[Black "Van Foreest, Jorden"]
[Result "1/2-1/2"]
[Annotator "Abeln,Michiel"]
[ECO "D35"]
[WhiteElo "2733"]
[BlackElo "2680"]
[PlyCount "111"]
[GameId "2136632053416649"]
[EventDate "2025.01.18"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. cxd5 exd5 5. Bf4 Nf6 6. e3 Bf5 7. Nf3 c6 8. Nh4 Bg6 9. h3 Nbd7 10. Nxg6 hxg6 11. Bd3 Nf8 12. Qb3 (12. Qc2 Ne6 13. Be5 Qa5 14. O-O Nd7 15. Bg3 f5 16. a3 Qd8 17. b4 Bh4 18. Bh2 Rc8 19. b5 Nf6 20. bxc6 bxc6 21. Ba6 Rc7 22. Bxc7 Qxc7 23. Rfc1 O-O 24. Nxd5 Nxd5 25. Qxc6 Qxc6 26. Rxc6 Kf7 27. Bc4 Rd8 28. Rb1 Rd7 29. Rb5 Ndc7 30. Rb7 Ke7 31. d5 Nd8 32. d6+ Kf6 33. dxc7+ {1-0 (33) Gukesh,D (2736)-Pranav,V (2608) Chess.com INT 2023}) 12... Qb6 13. Qc2 Ne6 14. Be5 O-O 15. O-O-O Rac8 16. Kb1 Rfd8 17. Be2 Nd7 $6 18. Bg3 (18. Bg4 $1 {was a serious alternative}) 18... Nf6 19. Bg4 c5 20. dxc5 Rxc5 21. Qb3 Qxb3 22. axb3 Nxg4 23. hxg4 d4 24. exd4 Nxd4 25. Rhe1 Ne6 26. f3 a6 27. Rxd8+ Bxd8 28. Rd1 Bc7 29. Bxc7 Rxc7 30. Nd5 Rc5 31. b4 Rc4 32. b3 Rd4 33. Rxd4 Nxd4 {The endgame is equal remains so.} 34. Kb2 Kf8 35. Kc3 Ne6 36. b5 axb5 37. Kb4 Nd4 38. Nc3 Ke7 39. Nxb5 Ne6 40. Ka5 Nf4 41. g3 Nd5 42. Na3 Kd6 43. Kb5 f5 44. Nc4+ Ke6 45. g5 f4 46. g4 Nc3+ 47. Kc5 Ne2 48. b4 Nc1 49. Nb2 Nb3+ 50. Kb6 Nd4 51. Kxb7 Kd5 52. Kc7 Nxf3 53. Nd3 Kc4 54. Nxf4 Nxg5 55. Nxg6 Kxb4 56. Kd7 1/2-1/2

[Event "87th Tata Steel Masters"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4"]
[White "Erigaisi, Arjun"]
[Black "Fedoseev, Vladimir"]
[Result "0-1"]
[Annotator "Abeln,Michiel"]
[ECO "D35"]
[WhiteElo "2801"]
[BlackElo "2717"]
[PlyCount "78"]
[GameId "2136630071472147"]
[EventDate "2025.01.18"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. cxd5 exd5 6. Bf4 {Here the normal move is c6 or 0-0. Fedoseev'smove, losing a tempo, is new at top level.} Bd6 ({Relevant:} 6... c6 7. h3 Bf5 8. e3 Qb6 9. Bd3 Bxd3 10. Qxd3 Nbd7 11. O-O-O O-O 12. Nh4 g6 13. Nf3 Rfe8 14. h4 h5 15. Ng5 Bb4 16. f3 Qa5 17. Kb1 Bxc3 18. Qxc3 Qxc3 19. bxc3 Nb6 20. Rhe1 Nc4 21. e4 dxe4 22. fxe4 Rad8 23. Kc2 Ng4 24. Re2 f6 25. Nf3 Rd7 26. a4 a5 27. Kb3 b5 28. d5 Nb6 29. axb5 cxb5 30. d6 Rc8 31. Nd4 Rc5 32. Ra2 Ne5 33. Rxa5 Rxd6 34. Rda1 Nbc4 35. Ra8+ Kf7 36. Rh8 {1-0 Erigaisi,A (2778)-Grischuk,A (2689) Julius Baer GenCup D1 W Chess.com INT rapid 2024 (1.2)}) 7. e3 Bxf4 8. exf4 {[#]} O-O $146 ({Predecessor:} 8... Bg4 9. Qa4+ c6 10. Ne5 Qb6 11. b3 Bf5 12. f3 O-O 13. g4 Bc8 14. O-O-O Nfd7 15. Qa3 f6 16. Nxd7 Nxd7 17. Kb1 f5 18. g5 Re8 19. Na4 Qc7 20. Qc1 Nf8 21. Nc5 a5 22. h4 Bd7 23. h5 b6 24. Nd3 a4 25. b4 a3 26. Ka1 c5 27. dxc5 Ba4 28. Re1 bxc5 {½-½ Schubert,V-Rau,J DESC Liga 2012th Gr.A email DESC email}) 9. Ne5 Nc6 10. f3 Be6 11. Qd2 Nxe5 12. dxe5 Nd7 13. O-O-O c6 14. g4 f5 15. Ne2 {A clear mistake} (15. Rg1 {was the way to go.}) 15... fxg4 16. Nd4 Qe7 17. Rg1 gxf3 18. Bd3 Kh8 {A bit slow.} (18... f2 19. Rg2 Nc5 {And Black would have been clearly better.}) 19. Bc2 c5 $2 (19... Nc5 {would have been an improvement.Fedoseev mentioned afterwards he wasn't sure about c5.}) 20. Nxf3 Nb6 (20... Bf5 {This was an important resource to neutralize the bishop on c2.Fedoseev looked at this move at several points but could not find the right moment to play it.}) 21. Rg5 $1 {The only move for a winning advantage.} Nc4 22. Qd3 g6 23. Nh4 Qf7 24. Rf1 Rg8 25. Qg3 Bf5 26. Bxf5 $6 {This was where Erigaisi missed his win.} (26. Nxf5 gxf5 27. b3 $1) 26... gxf5 27. Nxf5 $4 {A blunder, the sting in the tale is that there will be a knight fork of white's rooks in the end.} (27. Re1 {And White can still claim some advantage.}) 27... Qxf5 {Missed by Arjun.} 28. Rxf5 Rxg3 29. hxg3 Ne3 $1 {And it's all over.} 30. Rg5 Nxf1 31. e6 Ne3 32. Re5 d4 33. Rxc5 b6 34. Rh5 Kg7 35. Kd2 Re8 36. f5 Kf6 37. Rxh7 Nxf5 38. Rxa7 Rxe6 39. g4 Nh4 0-1

[Event "87th Tata Steel Masters"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4"]
[White "Praggnanandhaa, R"]
[Black "Mendonca, Leon Luke"]
[Result "1-0"]
[Annotator "Abeln,Michiel"]
[ECO "C77"]
[WhiteElo "2741"]
[BlackElo "2639"]
[PlyCount "91"]
[GameId "2136632521536285"]
[EventDate "2025.01.18"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Bc5 7. Bg5 h6 8. Bh4 d6 9. c3 Bb6 ({Relevant:} 9... Ba7 10. O-O Na5 11. Bc2 c5 12. Nbd2 g5 13. Bg3 Nh5 14. h3 Rb8 15. Kh1 Rb7 16. Nh2 Nf4 17. Ng4 h5 18. Ne3 g4 19. h4 Ng6 20. Qe1 Kf8 21. f3 c4 22. dxc4 Bxe3 23. Qxe3 Nxc4 24. Nxc4 bxc4 25. b4 gxf3 26. Qxf3 Bg4 27. Qf2 Kg7 28. a4 Re8 29. Bd1 Rd7 30. a5 Nf4 31. Ba4 Nd3 32. Qb6 Re6 33. Bxd7 Qxd7 34. Qxa6 Be2 35. Rf5 Rg6 36. Kh2 d5 37. Rg5 {1-0 Vachier Lagrave,M (2721)-Ding,L (2745) Sinquefield Cup 11th Saint Louis 2024 (9)}) 10. a4 Rb8 11. axb5 axb5 12. Na3 b4 13. Nc4 {Pragg mentioned afterwards that this line is dangerous for Black if you don't know precisely what you are doing.} bxc3 14. bxc3 O-O (14... g5 15. Bg3 Bd7 16. h4 g4 17. Nfd2 h5 18. O-O Bc5 19. d4 exd4 20. e5 dxc3 21. exd6 cxd6 22. Bxd6 Bxd6 23. Nxd6+ Kf8 24. Nxf7 Qb6 25. Nxh8 cxd2 26. Qxd2 Qxb3 27. Qh6+ Kg8 28. Qxf6 Qe6 29. Qxe6+ Bxe6 30. Ng6 Bf7 31. Ra6 Nd4 32. Ne5 Be8 33. Rd1 Rd8 34. Kh1 Rd5 35. Nc6 {1-0 (35) Sethuraman,S (2582)-Sivuk,V (2490) Sitges 2023}) 15. O-O {[#]} Kh8 $146 (15... Be6 {was probably more solid.}) ({Predecessor:} 15... Be6 16. Ba2 g5 17. Nxg5 hxg5 18. Bxg5 Bxc4 19. Bxc4 Kg7 20. Kh1 Qd7 21. f4 Ng4 22. f5 Nf6 23. Rf3 Rh8 24. Rg3 Nh5 25. f6+ Kf8 26. Rh3 Qxh3 27. gxh3 Nf4 28. Bxf4 exf4 29. Qg4 Rg8 30. Qd7 f3 31. Qxf7# {1-0 Pichot,A (2625)-Nguyen,T (2609) Wch Blitz Warsaw 2021 (13)}) 16. Ba4 Bd7 $2 17. Rb1 (17. Re1 {was better.}) 17... g5 18. Bg3 Ba7 19. Ra1 Bb6 $6 (19... Bc5) 20. Re1 {Black has gone wrong in the opening and has no counterplay.} Ne7 21. d4 {Opening the center.} Bxa4 22. Rxa4 exd4 23. cxd4 Ng6 24. e5 Nh5 $6 (24... Nd5) 25. exd6 Nxg3 26. dxc7 Qxc7 27. hxg3 Rbe8 {White is winning.} 28. Ne3 Qd7 29. Qa1 Kh7 30. Ra6 Rb8 31. Nc4 Bc7 32. Ra7 Qc6 33. Rc1 Ra8 34. d5 Rxa7 35. Qxa7 Ra8 36. Qd4 $1 Qd7 37. d6 Bd8 38. Nce5 Qe6 39. Nxg6 fxg6 40. Re1 Qf7 41. Qe4 (41. Ne5) 41... Ra7 42. Ne5 Qe6 43. Nc6 Qxe4 44. Rxe4 Rd7 45. Re6 h5 46. Kh2 1-0

[Event "Tata Steel Challengers"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4.1"]
[White "Svane, Frederik"]
[Black "Nogerbek, Kazybek"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2664"]
[BlackElo "2514"]
[ECO "C88"]
[Opening "Ruy Lopez"]
[Variation "closed, anti-Marshall 8.a4"]
[WhiteFideId "12923044"]
[BlackFideId "13710427"]
[EventDate "2025.01.18"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4
Bb7 9. d3 d6 10. Bd2 b4 11. a5 h6 12. c3 d5 13. cxb4 dxe4 14. dxe4 Bxb4 15. Nxe5
Nxe5 16. Bxb4 Re8 17. Qxd8 Raxd8 18. Bc2 Bxe4 19. Bxe4 Rd4 20. Bc3 Rxe4 21. Nd2
Rxe1+ 22. Rxe1 Ned7 23. Rxe8+ Nxe8 24. f4 f6 25. Nc4 Kf7 26. f5 Ke7 27. Kf2 Nd6
28. Nxd6 Kxd6 29. Kg3 c5 30. Kg4 Ne5+ 31. Kh5 Ke7 32. b4 cxb4 33. Bxb4+ Kf7 34.
Kh4 Nc4 35. g4 g6 36. fxg6+ Kxg6 37. Be1 Ne3 38. Kg3 f5 39. h3 fxg4 40. hxg4 h5
41. gxh5+ Kxh5 42. Kf3 Nc4 43. Ke4 Nxa5 44. Bxa5 Kg6 45. Be1 a5 46. Bxa5 1/2-1/2

[Event "Tata Steel Challengers"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4.2"]
[White "Bulmaga, Irina"]
[Black "Lu, Miaoyi"]
[Result "1/2-1/2"]
[WhiteTitle "IM"]
[BlackTitle "IM"]
[WhiteElo "2386"]
[BlackElo "2429"]
[ECO "C45"]
[Opening "Scotch"]
[Variation "Schmidt variation"]
[WhiteFideId "13903063"]
[BlackFideId "8618020"]
[EventDate "2025.01.18"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Bd3 d5 7. Qe2 dxe4 8.
Nc3 Bb4 9. Bxe4 O-O 10. Bxc6 Rb8 11. O-O Qd6 12. Bb5 Ng4 13. g3 Bxc3 14. bxc3
Ne5 15. Bf4 Rxb5 16. Qxb5 Nf3+ 17. Kg2 Qe6 18. Rfd1 c6 19. Qa4 Nh4+ 20. gxh4
Qh3+ 21. Kg1 Qg4+ 22. Kf1 Qf3 23. Rd3 Qh1+ 24. Ke2 Qxa1 25. Re3 Bg4+ 26. f3 Be6
27. Kf2 Bh3 28. Re1 Qxc3 29. Be5 Qc5+ 30. Bd4 Qd6 31. Be5 Qc5+ 32. Bd4 Qd6 33.
Be5 Qc5+ 1/2-1/2

[Event "Tata Steel Challengers"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4.3"]
[White "Pijpers, Arthur"]
[Black "L'Ami, Erwin"]
[Result "1/2-1/2"]
[WhiteTitle "IM"]
[BlackTitle "GM"]
[WhiteElo "2474"]
[BlackElo "2614"]
[ECO "C42"]
[Opening "Petrov"]
[Variation "classical attack"]
[WhiteFideId "1019554"]
[BlackFideId "1007998"]
[EventDate "2025.01.18"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bf5 7. O-O Be7 8. Re1
Nc6 9. Nbd2 Nxd2 10. Qxd2 Bxd3 11. Qxd3 O-O 12. c3 Qd7 13. Bf4 a6 14. Re2 Rae8
15. Rae1 Bd8 16. h3 Rxe2 17. Qxe2 f6 18. Nh2 Rf7 19. Qe8+ Qxe8 20. Rxe8+ Rf8 21.
Rxf8+ Kxf8 22. g4 Kf7 23. Kf1 Ke6 24. Ke2 Ne7 25. Nf1 c6 26. Ng3 g6 27. f3 Nc8
28. Kd3 Nb6 29. h4 Nd7 30. h5 Be7 1/2-1/2

[Event "Tata Steel Challengers"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4.4"]
[White "Nguyen, Thai Dai Van"]
[Black "Suleymanli, Aydin"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2668"]
[BlackElo "2623"]
[ECO "C77"]
[Opening "Ruy Lopez"]
[Variation "Anderssen variation"]
[WhiteFideId "358878"]
[BlackFideId "13413937"]
[EventDate "2025.01.18"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. O-O Bg7 8. Re1 O-O
9. h3 b5 10. Bc2 d5 11. Be3 Re8 12. Nbd2 dxe4 13. dxe4 Nh5 14. a4 Rb8 15. axb5
axb5 16. Nb3 Qf6 17. Bg5 Qd6 18. Qc1 Nf4 19. Qe3 Ne6 20. Bh6 b4 21. Bxg7 Kxg7
22. Red1 Qe7 23. Nc1 bxc3 24. bxc3 Nf4 25. Ba4 Rd8 26. Nd3 Nxd3 27. Rxd3 Rxd3
28. Qxd3 Ra8 29. Qd1 Qc5 30. Bxc6 Rxa1 31. Qxa1 1/2-1/2

[Event "Tata Steel Challengers"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4.5"]
[White "Bok, Benjamin"]
[Black "Oro, Faustino"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "IM"]
[WhiteElo "2583"]
[BlackElo "2447"]
[ECO "C53"]
[Opening "Giuoco Piano"]
[WhiteFideId "1017063"]
[BlackFideId "20000197"]
[EventDate "2025.01.18"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 O-O 6. O-O h6 7. b4 Be7 8. Qb3 a5
9. b5 a4 10. Qc2 Na5 11. Nxe5 Nxc4 12. dxc4 Bc5 13. Nd2 d6 14. Nd3 Bb6 15. Ba3
Re8 16. Rae1 Ng4 17. Nf3 Be6 18. h3 Nxf2 19. Nxf2 Bxc4 20. Kh1 Bxf1 21. Rxf1 Qf6
22. c4 Re6 23. e5 dxe5 24. c5 Ba5 25. Ng4 Qg6 26. Qc4 Rae8 27. Bb2 f6 28. Nh4
Qf7 29. Nf5 Kh7 30. Qxa4 b6 31. Qe4 Kh8 32. c6 h5 33. Nge3 Rd8 34. Nc4 Ree8 35.
Nxa5 bxa5 36. a4 Qb3 37. Qh4 Qf7 38. Bc3 Rd3 39. Bxa5 e4 40. Bxc7 g5 41. Nh6 Qg6
42. Rxf6 gxh4 43. Rxg6 e3 44. Nf5 e2 45. Ba5 e1=Q+ 46. Bxe1 Rxe1+ 47. Kh2 Rdd1
48. Nxh4 1-0

[Event "Tata Steel Challengers"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4.6"]
[White "Divya, Deshmukh"]
[Black "Gurel, Ediz"]
[Result "1-0"]
[WhiteTitle "IM"]
[BlackTitle "GM"]
[WhiteElo "2490"]
[BlackElo "2624"]
[ECO "E36"]
[Opening "Nimzo-Indian"]
[Variation "classical, Noa variation, 5.a3"]
[WhiteFideId "35006916"]
[BlackFideId "44507356"]
[EventDate "2025.01.18"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 O-O 7. Nf3 b6 8. Bg5
dxc4 9. Qxc4 Ba6 10. Qa4 Bb7 11. e3 h6 12. Bh4 Nbd7 13. Bb5 Qc8 14. Rc1 c5 15.
Bxf6 Nxf6 16. dxc5 bxc5 17. b4 Ne4 18. O-O Qc7 19. Bd3 Rfd8 20. Bxe4 Bxe4 21.
bxc5 Bc6 22. Qc2 Rac8 23. Nd4 Ba8 24. Rfd1 Rd5 25. Nb5 Qxc5 26. Rxd5 Qxc2 27.
Rxc2 Rxc2 28. Rd8+ Kh7 29. h4 Bd5 30. Nxa7 Rc5 31. Nc8 Ra5 32. Rd7 Rxa3 33. Rxf7
Ra4 34. f3 Rxh4 35. e4 Bb3 36. Rb7 Ba4 37. Nb6 Bc2 38. Nd7 Rf4 39. Nc5 Rf8 40.
Nxe6 Rg8 41. Nc5 Rc8 42. Ne6 Rg8 43. Nd4 Ba4 44. Nf5 h5 45. Kf2 Kh8 46. e5 Re8
47. Nd6 Re6 48. f4 Kg8 49. Rb8+ Kh7 50. Ne4 Re8 51. Rxe8 Bxe8 52. e6 Bc6 53. Nd6
g5 54. fxg5 Kg6 55. e7 Kxg5 56. Kg3 1-0

[Event "Tata Steel Challengers"]
[Site "Wijk aan Zee NED"]
[Date "2025.01.21"]
[Round "4.7"]
[White "Yakubboev, Nodirbek"]
[Black "Vaishali, Rameshbabu"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2659"]
[BlackElo "2476"]
[ECO "D52"]
[Opening "QGD"]
[Variation "Cambridge Springs defence, Rubinstein variation"]
[WhiteFideId "14203987"]
[BlackFideId "5091756"]
[EventDate "2025.01.18"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c6 5. Bg5 Nbd7 6. e3 Qa5 7. Nd2 dxc4 8. Bxf6
Nxf6 9. Nxc4 Qc7 10. Rc1 Bd6 11. f4 O-O 12. Bd3 Be7 13. O-O c5 14. Qe2 Bd7 15.
dxc5 Qxc5 16. Ne5 Rfc8 17. Rc2 Be8 18. Rfc1 Rd8 19. Nb5 Qb6 20. Nc7 Rab8 21. Kh1
Bc6 22. Nxc6 bxc6 23. Na6 Rbc8 24. Nc5 Rd5 25. Nb3 h5 26. Bc4 Rd7 27. Nd4 Ng4
28. Ba6 Rcc7 29. Rxc6 Bf6 30. Bc8 Rxc6 31. Rxc6 Rc7 32. Bd7 Bxd4 0-1

