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Vassily Ivanchuk leads the 47th Capablanca Memorial with 3.5/5 going into the rest day. Ivanchuk completely outplayed Viktor Laznicka in a complex Nimzo Indian. Vladimir Potkin beat Yuniesky Quesada Perez with a conversion to a winning King and Pawn ending that proved deceptive for his opponent. Ian Nepomniachtchi's disappointing play continues with a dull draw against Leinier Dominguez Perez.

Laznicka,Viktor - Ivanchuk,Vassily [E41]
47th Capablanca Mem Elite Havana CUB (5), 08.05.2012
[Crowther,Mark]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 Nc6 6.Bd3 Bxc3+ 7.bxc3 d6 8.0-0 e5 9.Nd2 0-0 10.Rb1 b6 11.d5 Ne7 12.Qc2 g6 13.f4 exf4

[13...Ng4 14.Nf3 exf4 15.exf4 Nf5 16.Re1 h5 17.h3 Ngh6 18.Qf2 h4 19.Bd2 Bd7 20.Rbc1 Kg7 21.Red1 Ba4 22.Re1 Bd7 23.Ra1 Rh8 24.Red1 Qf6 25.a4 a5 26.Kh2 Rae8 27.Rdb1 Rb8 28.Kg1 Ng3 29.f5 Bxf5 30.Bg5 Qxc3 31.Bxf5 Nhxf5 32.Rc1 Qd3 33.Re1 Rhe8 34.Nxh4 Qd4 35.Nxf5+ Nxf5 36.g4 f6 37.Bf4 g5 38.Bh2 Ne3 39.Bxd6 Rb7 40.Ra3 Nxg4 0-1 Korotylev,A (2573)-Womacka,M (2469)/Pardubice CZE 2001/The Week in Chess 351]

14.h3?

[14.Rxf4]

14...Nf5 15.Bxf5 Bxf5 16.e4 Bd7 17.Rxf4 Qe7 18.Bb2 Nh5 19.Rf2 f5

Black has the initiative.

20.Re1 Rae8 21.Bc1 f4

[21...Ng3]

22.Qd1 Qg7 23.Nf1 Re5 24.Nh2 Qe7 25.Qd3 Rg5

[25...Bf5 26.Bxf4 Bxe4 27.Qd2 Nxf4 28.Rxf4 Rxf4 29.Qxf4 Bxd5 30.Rxe5 dxe5 31.Qg4 Be6 32.Qe4 Bf5]

26.g4?

Loses out of hand.

[26.Nf1 holding on in an inferior position was better.]

26...fxg3 27.Rxf8+ Qxf8 28.Nf3 Re5 29.Kg2 Re7 30.e5?

There isn't really a good move but this accelerates the loss.

30...dxe5 31.d6 Re6 32.Qd5 Nf6

There isn't a single good thing to say about white's position.

0-1

Quesada Perez,Yuniesky - Potkin,Vladimir [B46]
47th Capablanca Mem Elite Havana CUB (5), 08.05.2012

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Nxc6 bxc6 7.Bd3 d5 8.0-0 Nf6 9.Qf3 Be7 10.e5 Nd7 11.Qg3 Kf8

[11...g6 12.Bh6 Bf8 (12...a5 13.Rfe1 Ba6 14.Qh3 Bf8 15.Ne2 Qe7 16.Nd4 Bb7 17.c4 dxc4 18.Bxc4 Bxh6 19.Qxh6 Qf8 20.Qh3 Qe7 21.Rad1 Nb6 22.Bd3 0-0 23.Be4 Rad8 24.Qc3 c5 25.Nc6 1/ 2-1/2 Kurnosov,I (2577)-Kobalia,M (2623)/Moscow RUS 2008/The Week in Chess 692) 13.Bxf8 Kxf8 14.Na4 Qc7 15.Rfe1 c5 16.c4 d4 17.b3 Kg7 18.h4 h5 19.Nb2 Bb7 20.Be4 a5 21.Rad1 Ra7 22.Bxb7 Qxb7 23.Qg5 Qa8 24.Rd3 Qd8 25.Qf4 Nb6 26.Rf3 Qe7 27.Nd3 Nd7 28.Nc1 a4 29.Ne2 axb3 30.axb3 Rha8 31.Ng3 Ra1 32.Rxa1 Rxa1+ 33.Kh2 f5 34.exf6+ Qxf6 35.Qe4 Qe7 36.Kh3 e5 37.Qb7 Qe6+ 38.Kh2 Qe7 39.Kh3 Re1 40.b4 cxb4 41.c5 Rc1 42.c6 Qe6+ 43.Nf5+ gxf5 44.Qxd7+ Kf6 45.Qd8+ Kf7 46.Qc7+ Kf6 47.Qd8+ Kf7 1/2-1/2 Vachier Lagrave,M (2632) -Laznicka,V (2578)/Plovdiv BUL 2008/The Week in Chess 704]

12.Re1 h5 13.h3 h4 14.Qg4 a5 15.Na4 Ba6 16.Bxa6 Rxa6 17.c4 g6 18.Qe2 Ra8 19.cxd5 cxd5 20.Be3 Qb8 21.f4 Kg7 22.Rac1 Qb4 23.b3 Rhc8 24.Qf2 Qb7 25.Bd4 Ra6 26.Rxc8 Qxc8 27.Re3 Rc6 28.Rc3 Rxc3 29.Nxc3 Nb8 30.Qc2 Na6 31.Qd2 Nb4 32.Ne2 Qa6 33.a4 Nc6 34.Be3 Bd8 35.Nd4 Nxd4 36.Qxd4 Qb7 37.Qc3 Bb6 38.Kf2 Bxe3+ 39.Kxe3 Qb6+ 40.Kd3 Qa6+ 41.Kd2 Qf1 42.Qf3 Qb1 43.Qf2 g5!

44.fxg5?

[44.Qf3 Needs to be played. The endgame seems to be a forced win for black due to his fast pawn duo in the centre and the fact that after b4 black's running b-pawn will queen before white's a-pawn.]

44...Qb2+ 45.Ke1 Qxe5+ 46.Qe2 Qg3+ 47.Qf2

[47.Kd2 Qxb3]

47...Qxf2+ 48.Kxf2 e5 49.Ke3

[49.g3 hxg3+ 50.Kxg3 e4 51.Kf4 Kg6 52.h4 Kh5 53.Ke3 Kxh4]

49...e4 50.Kd4 Kh7 51.b4 axb4 52.a5 b3

[52...b3 53.a6 b2 54.a7 b1Q 55.a8Q Qd3+ 56.Kc5 e3 57.Qe8 Qc4+ 58.Kd6 Qa6+ 59.Kc5 Qe6]

0-1

Nepomniachtchi,Ian - Dominguez Perez,Leinier [B96]
47th Capablanca Mem Elite Havana CUB (5), 08.05.2012

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 h6 8.Bh4 Qb6 9.a3 Be7 10.Bf2 Qc7 11.Qe2 Nc6 12.h3

[12.0-0-0 Nxd4 13.Rxd4 b5 14.g4 e5 15.Rd3 exf4 16.Rg1 Be6 17.Nd5 Bxd5 18.exd5 Nd7 19.Bd4 Ne5 20.Rc3 Qd8 21.Bxe5 dxe5 22.Qxe5 0-0 23.Rc6 Re8 24.Bd3 Bf8 25.Qxf4 Qxd5 26.Qf5 Qxf5 27.gxf5 Rec8 28.Be4 Rxc6 29.Bxc6 Rd8 30.b4 Bd6 31.h3 Bf4+ 32.Kb1 Rc8 33.Bb7 Rc3 34.Rf1 Bc7 35.Rf3 Rxf3 36.Bxf3 Kf8 37.Bb7 a5 38.Bc6 axb4 39.axb4 Ke7 40.Bxb5 g6 41.fxg6 fxg6 42.Ka2 Kd6 43.Be8 Kd5 44.Kb3 g5 45.c4+ Kd4 46.c5 Bd8 47.Ka4 Be7 48.Kb5 Kd5 49.Bf7+ Kd4 50.Kc6 h5 51.Bxh5 Kc4 52.Kd7 Bxc5 53.bxc5 Kxc5 54.Ke6 Kc6 55.Kf6 Kd6 56.Bf7 1-0 Kotronias,V (2597) -Hagen,A (2453)/Plovdiv BUL 2012/The Week in Chess 908]

12...b5 13.g4 Bb7 14.Bg2 Rc8 15.Nxc6 Qxc6 16.0-0-0 Qc4 17.Rhe1 Qxe2 18.Rxe2 Nd7 19.Bg3 Nb6 20.Rd3 Nc4 21.Nd1 g5 22.f5 Ne5 23.Bxe5 dxe5 24.Ne3 Bc5 25.Red2 Bc6 26.b4 Bb6 1/2-1/2

47th Capablanca Mem Elite Havana (CUB), 3-14 v 2012											cat. XVIII (2694)
					1		2		3		4		5		6
1.	Ivanchuk, Vassily	g	UKR	2764	*	*	1	.	½	.	1	.	½	.	½	.	3½	2829
2.	Dominguez Perez, Leinier	g	CUB	2725	0	.	*	*	½	.	1	.	1	.	½	.	3	2760
3.	Nepomniachtchi, Ian	g	RUS	2716	½	.	½	.	*	*	½	.	½	.	½	.	2½	2689
4.	Laznicka, Viktor	g	CZE	2693	0	.	0	.	½	.	*	*	1	.	1	.	2½	2694
5.	Potkin, Vladimir	g	RUS	2642	½	.	0	.	½	.	0	.	*	*	1	.	2	2632
6.	Quesada Perez, Yuniesky	g	CUB	2625	½	.	½	.	½	.	0	.	0	.	*	*	1½	2559

Round 5 (May 8, 2012)
Nepomniachtchi, Ian	- Dominguez Perez, Leinier	½-½	26	B96	Sicilian Najdorf
Laznicka, Viktor	- Ivanchuk, Vassily	0-1	32	E41	Nimzo Indian Rubinstein
Quesada Perez, Yuniesky	- Potkin, Vladimir	0-1	52	B46	Sicilian Paulsen

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