Ronda 8
Vassily Ivanchuk Teimour Radjabov Liviu-Dieter Nisipeanu
O jogo da jornada foi o seguinte. Em que Kamsky deixa fugir a hipotese de ganhar ao não descobrir a combinação ganhadora no final.
Kamsky,Gata - Nisipeanu,Liviu Dieter [D02]
Kings' Tournament Bazna ROM (8), 22.06.2009
1.d4 d5 2.Nf3 Nf6 3.Bf4 c5 4.e3 Nc6 5.c3. Sometimes with the white pieces Kamsky starts the game without any ambitions for the opening advantage. We witness such a case. 5...Qb6 6.Qb3. Both sides would are happy to exchange queens, but only if it would open the a-file for their own rook. 6...c4 7.Qc2. After 7.Qxb6 axb6 Black has a pleasant endgame thanks to the plan to advance the b-pawn to b4. 7...Bf5. A standard developing move – White cannot take the bishop in view of 8...Qxb2 and the rook a1 is gone. 8.Qc1 h6. Another standard move – Black defends against a possible Nf3-h4 by making square h7 available for the bishop. 9.Be2 e6 10.h3 Qd8 11.b3. A logical novelty. White needs more space on the queenside and is ready to exchange some pawns. 11...b5 12.bxc4 bxc4
13.Bd1 Qa5! 13...Bd6 is strongly met with 14.Ba4! Rc8 15.Bxd6 Qxd6 16.Ne5 and Black loses material. 14.Bc2 Ne4 15.0-0 g5 16.Bh2 Bd6 17.Re1 Bxh2+ 18.Nxh2 Nd6 19.f3 Bxc2 20.Qxc2 f5 21.Nd2 Kd7 22.e4 Rab8 23.Nhf1. The position is about equal. 23...Qa3 [23...Rb6 was preferable] 24.Rab1 Rhf8 25.Ng3
25...Nb5. The start of the wrong plan to bring the knight to a3. 25...fxe4 26.fxe4 Nxd4 27.cxd4 Qxg3 is far from clear after both 28.Nf1 or 28.Qa4+; Again stronger is 25...Rb6 with a double-edged position. 26.Ne2 Qa5 27.Qc1 Na3 28.Rxb8 Rxb8
The knight on a3 is completely misplaced and now White opens the other wing. 29.exd5 exd5 30.f4! Now Black is in troubles. 30...Qa4 31.fxg5 hxg5 32.Nf3 f4. The alternative 32...g4 33.hxg4 fxg4 34.Ne5+ Nxe5 35.dxe5 Rb1 36.Qd2 Rxe1+ 37.Qxe1 had its drawbacks as well: the black king is too exposed. 33.Rf1. Not a bad move, but instead of it Kamsky had a powerful knight sacrifice: 33.Nxf4 gxf4 (The point is that after 33...Rb1 White has 34.Ne6! Rxc1 35.Nc5+ Kc7 36.Nxa4) 34.Qxf4 with dangerous attack for White. 33...Re8 34.Qd2 Qc2 35.Qxc2 Nxc2 36.Kf2 Ne3. Better is 36...g4 and only after 37.hxg4 to play 37...Ne3. 37.Rb1 g4 38.Nh4 Re4 39.Ng6. Black loses a pawn in all variations. 39...g3+ 40.Kf3 Nxg2 41.Ngxf4 Nxf4 42.Nxf4 Ne7 43.Kxg3 Kc6 44.Kf3 Nf5
White is a pawn up and has two possibilities to convert his advantage. After the simple 45.Ng6 it is clear that Black has to struggle a lot. However, Kamsky finds an elegant combination. 45.Nxd5! Kxd5 46.Rb5+ Ke6. Black must keep square d6 free for the future fork 46...Kc6 47.Rc5+. 47.d5+ [47.Kxe4? Nd6+] 47...Kf6 [47...Kd6? 48.Kxe4; 47...Ke5 48.d6+ Ke6 49.Rxf5! Kxf5 50.d7 and White queens.] 48.Kxe4 Nd6+ 49.Kd4 Nxb5+ 50.Kxc4 Nd6+
51.Kd4? [After having analyzed the position in his hotel room, Kamsky found the solution: 51.Kc5 Ne4+ 52.Kb4!! A study like move designed to provoke the advance of the opponent's a-pawn.
a) 52.Kd4 Ng5 53.c4 Nxh3 54.Kc5 Ng5 55.Kb5 Ke5 is a draw;
b) 52.Kc6 Nxc3 53.d6 (53.h4 Nxa2) 53...Ke6 54.a3 (54.a4 Nd5 55.a5 Nb4+=; 54.d7 Ke7 55.h4 Kd8 56.h5 Ne4 57.h6 Ng5 58.a4 Nh7 59.a5 Ng5 60.a6 Nh7 61.Kd6 Ng5=) 54...Nd5 55.h4 Nb6 56.h5 Nc4; 52...a5+ (52...Ke5 53.c4 Kd6 54.h4 Nf6 55.Kb5 wins) 53.Kc4! Nd6+ (or 53...Ke5 54.h4 Nf6 55.a4 Kd6 56.Kb5 Nxd5 57.c4 Nf4 58.Kb6 Kd7 59.c5) 54.Kc5 Ne4+ 55.Kc6 Nxc3 56.d6 Ke6 57.a3! It is important to take control over square b4! 57...Nd5 58.h4 Nf6 59.h5 and White wins.
51...Nb5+ 52.Kd3. White could still return to the winning path: 52.Kc4 Nd6+ 53.Kc5. 52...Ke5 53.c4 Nd6 54.h4. [54.c5 Ne4=] 54...Nf5 55.h5 Kd6
In spite of having three passed pawns for the knight, White cannot make much progress, since 56.Ke4 runs into a check on g3. 56.Kc3 Kc5 57.Kb3 Nh6 58.Ka4 Kxc4 59.d6 Kc5. Draw agreed in view of 59...Kc5 60.d7 Nf7 61.Ka5 Kc6 62.Ka6 Kxd7 63.Kxa7 Kc7. Draw.
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