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Tuesday, May 15, 2012

French with Nc3

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Dominguez Perez,Leinier (2639) - Shulman,Yuri (2550) [C18]
American Continental 3rd Buenos Aires (10), 15.08.2005

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7
7.Qg4 Qc7 8.Qxg7 Rg8 9.Qxh7 cxd4 10.Ne2 Nbc6 11.f4 Bd7
12.Qd3 dxc3 13.Rb1 0-0-0 14.Nxc3 Na5! 15.Nb5?! Diagram

XABCDEFGHY
8-+ktr-+r+(
7zppwqlsnp+-'
6-+-+p+-+&
5snN+pzP-+-%
4-+-+-zP-+$
3zP-+Q+-+-#
2-+P+-+PzP"
1+RvL-mKL+R!
xabcdefghy
This immediate excursion by the knight is now considered a little
premature[15.h3! Dominguez Perez-Stellwagen, Wijk aan Zee
Corus A 2009] 15...Bxb5 16.Rxb5 [Even less promising for White
is 16.Qxb5?! when his opponent's most successful reply in practice
has been 16...Qxc2!? 17.Bd2 (17.Bd3 Qxg2 18.Rf1 Nec6 19.Bd2
Qh3!ƒ Zhang Zhong) 17...Qe4+„ 18.Kd1N when 18...a6! gains
control of the a4 square and allows Black to defend his loose
knight on a5 with the queen after 19.Qb6?! (19.Qb4!? Qxb4
20.Bxb4 Nec6 21.Bc5 Nc4 22.g3÷) 19...Qa4+ 20.Ke1ƒ Nec6 21.h4?
weakens the kingside, and left Black in charge after (whereas
21.Rg1 prepares to advance with his pawns on the kingside, but
leaves White vulnerable to unexpected tactical counterstrikes from
his opponent; 21.Kf2!? is a more solid approach after 21...Qe4!?
22.Rg1 Rd7 23.Bxa6 Rc7 24.Be2² Nazarevskiy-Temirbek, Mariupol
2003) 21...Rg3! 22.Rh3 Rxh3 23.gxh3 Qe4+ƒ 24.Kd1 Qa4+ Xu Jun-
Zhang Zhong, Tianjing 2003(24...Nd4!?; 24...Rg8!) ] 16...Kb8
Diagram

XABCDEFGHY
8-mk-tr-+r+(
7zppwq-snp+-'
6-+-+p+-+&
5snR+pzP-+-%
4-+-+-zP-+$
3zP-+Q+-+-#
2-+P+-+PzP"
1+-vL-mKL+R!
xabcdefghy
Black has pressure down the c/ and g/files, and prospects in the
center for making inroads with his knights[The alternative move
order 16...Nc4!? 17.g3 Kb8 is designed to sidestep the
development of White's bishop to e3 whereas 18.Be2 (18.Be3? Rc8
(since the simple 18...Nxe3!? 19.Qxe3 Qxc2 looks good for Black,
we might conclude that Ganguly's move order is more accurate
than the 16...¢b8 main text.) 19.Rc5 Qd7 20.Rxc8+ Rxc8 21.Bc1
Qb5 22.Qb3 Qxb3? (Black should keep the queens on with
22...Qc6„ ) 23.cxb3 Diagram

XABCDEFGHY
8-mkr+-+-+(
7zpp+-snp+-'
6-+-+p+-+&
5+-+pzP-+-%
4-+n+-zP-+$
3zPP+-+-zP-#
2-+-+-+-zP"
1+-vL-mKL+R!
xabcdefghy
23...Na5 (23...Nxe5 24.Bb2 also leaves White with a dangerous
runner on the h/file) 24.Bd2 Nxb3 25.Bd3 Nf5 26.Bxf5 exf5 27.h4
Nijboer-Ryan, Barbera Del Valles 2007) 18...Rc8 19.0-0 Nf5 left
White facing pressure in spite of castling into relative safety on
the kingside after 20.Rf3 Rg6 21.Bb2 Qc6 22.Rb4 Qc5+ 23.Kh1 Rh8
24.Bf1 Nxg3+! Diagram

XABCDEFGHY
8-mk-+-+-tr(
7zpp+-+p+-'
6-+-+p+r+&
5+-wqpzP-+-%
4-tRn+-zP-+$
3zP-+Q+Rsn-#
2-vLP+-+-zP"
1+-+-+L+K!
xabcdefghy
25.Rxg3 Qf2 26.Rg2 Rxg2 Diagram

XABCDEFGHY
8-mk-+-+-tr(
7zpp+-+p+-'
6-+-+p+-+&
5+-+pzP-+-%
4-tRn+-zP-+$
3zP-+Q+-+-#
2-vLP+-wqrzP"
1+-+-+L+K!
xabcdefgh
27.Bxg2 Ne3! 28.Rxb7+ Kc8! 29.Rb8+ Kc7 30.Rb7+ Kd8 0-1
Sergeeva-Ganguly, Abu Dhabi 2007; Another promising line is
16...Nf5 17.g3! Nc4 (17...Kb8; 17...Rh8!? 18.Bg2 a6 19.Rb4 Qc5
20.Bd2? Rxh2! 21.Rxh2 Qg1+µ Casse-Botterill, GBR 1978) 18.Bh3!?
(18.Be2 Qc6 19.Rb3 Qc5³ Sherbakov-Krasnov, URS 1959)
18...Qd7?! (18...Qc6!?÷) 19.Rb4 Kb8 20.0-0 Rc8 21.Rd1±
Rodriguez-Larrosa, Orense 1997] 17.g3!? [White's best try in this
well tested position is 17.Qd2!? Nc4 18.Qf2! (18.Bxc4 dxc4
19.Qa5? Qd7-+ Angelov-Raschev, cr 1988) 18...d4! 19.Rb3 Nf5
(19...Nd5!© Rodriguez) 20.Bd3 Qa5+ (20...Nfe3 21.Be4 Na5÷)
21.Ke2 Qd5 22.Rg1 Nfe3 23.Qf3 Na5 24.Rb5± Rodriguez-Paredes,
Mondariz op 1994] 17...Rc8© Diagram

XABCDEFGHY
8-mkr+-+r+(
7zppwq-snp+-'
6-+-+p+-+&
5snR+pzP-+-%
4-+-+-zP-+$
3zP-+Q+-zP-#
2-+P+-+-zP"
1+-vL-mKL+R!
xabcdefghy
Black's counterplay along the c/file and in the center is at least
good enough for dynamic equilibrium after18.Be3!? [After 18.Bd2!?
Nc4 19.Bg2 White intends to double rooks on the b/file, and
although the bishop at this moment does not look well placed, it's
x-ray vision down the long diagonal helps slow down Black's
central counterplay by making the advance of the d/pawn more
difficult 19...Nxd2 (19...Qc6 20.Rb3 Nf5 21.0-0 Nxd2 22.Qxd2 Qxc2
23.Qb4 b6= Carlsson-Antonsen, Hallsberg jr 1993) 20.Kxd2 a6
21.Rb3 Qc5 22.Rhb1 Qf2+ 23.Kd1 b5™ (but not 23...Rc7 24.Qxa6
Qxc2+ 25.Ke1+-) 24.Bf1 Rc4³ Hungaski-Rodriguez, Sao Paulo
2005] 18...b6!?N Black defends the knight without blocking his
own attack down the c/file. [Black also maintains a dynamic
balance after 18...Nc4 19.Bf2 (inferior is 19.Rc5?! Qd7 20.Rxc8+
Rxc8 21.Bd2 Qc6 22.Bb4 Nf5 Santarem-Haugen, cr 1986) 19...Qc6
(19...Qd7 Omelka-Boukal, cr CZE 2000) 20.Rc5!? Qa6 21.Be2 Rxc5
22.Bxc5 Qa5+? (22...Nf5=) 23.Bb4 Qd8 24.Qh7!+- Areshchenko-
Williams, Coventry op 2005] 19.Bc5 [19.Be2!? Qxc2 20.Bd2 Qxd3
21.Bxd3 Nc4÷] 19...Nf5 [19...Nb7!? 20.Bxe7 Qxe7ƒ] 20.Bh3 Nb7÷
21.Bf2 Qxc2 22.Qxc2 Rxc2 23.0-0 Nh4 24.Rb3 Na5 25.Rd3 Nc4
26.g4?! Very ambitious play, but at the expense of safety!
26...Ng6 27.Bg3 Nd2!?ƒ 28.Rf2 Rc1+ 29.Kg2 Ne4 30.Re2 Rh8
31.f5 Nh4+ [31...Nxg3 32.hxg3 Ne7 33.fxe6!? fxe6 34.g5!÷]
32.Bxh4 Rxh4 33.fxe6 fxe6 34.Rxe4™ Desperation, but Black's
advantage already has decisive proportions 34...dxe4 35.Re3
Diagram

XABCDEFGHY
8-mk-+-+-+(
7zp-+-+-+-'
6-zp-+p+-+&
5+-+-zP-+-%
4-+-+p+Ptr$
3zP-+-tR-+L#
2-+-+-+KzP"
1+-tr-+-+-!
xabcdefghy
35...Rh8? Now the win becomes problematic [35...Rd1! 36.Kg3
Rh8 37.g5 Rd3 38.Rxd3 exd3 39.Bg4 d2 40.h4 Kc7 41.g6 Rf8!!
…42.h5 Rf5! 43.Bd1 (43.g7 Rg5-+) 43...Kd7-+] 36.Kg3 Rd8
37.Bg2! Rd3 38.Kf4 Rxe3 39.Kxe3 Rc2 40.Bxe4 Rxh2 41.g5
Rh8 42.Kf4 Kc8 43.g6 Kd7 44.Kg5 Rg8™ 45.Kh6 Rh8+ 46.Kg5
Rg8! ½-½