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Subject: Re: Test Position === Timman vs Kasparov, London 1984 [49...Kg8!!]

Author: John Merlino

Date: 15:18:44 01/13/03

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On January 13, 2003 at 15:03:35, José Antônio Fabiano Mendes wrote:

>       Timman vs Kasparov, London 1984
> [D]8/2p2k2/7p/3p1Pp1/1P5n/2PqB2P/5P1K/7Q b
> The best move here is 49...Kg8!! [White is in Zugzwang]
> Kasparov played 49...Nxf5 and the game ended in a draw a few moves later.
>                You will find the game here:
>http://chess.alfabank.ru/en/london/results/pgn/1984London/22.short.pgn#game-view
> Also see ==> http://www.gmleitao.fpx.org.br/cronicas/2_semanas_em_moscou.htm
> Rafael Leitão is a Brazilian GM.    "2 weeks in Moscow"       [in Portuguese]

Kg8 might be the best move, but it appears that 56...Kf5 blew a won position.
Before that move, Chessmaster 9000 shows a score of about -2.2 for Black. After
56...Kf5 the score is immediately 0.0....

In this position:

[D]4Q3/8/2p3kp/3p2p1/3q4/7P/5PK1/8 b - - 0 56

Chessmaster 9000, on a P3-733, prefers Kh7. Anybody who has faster hardware
might be able to show that this position is a draw:

Time	Depth	Score	Positions	Moves
0:00	1/3	-3.10	1100		8...Kh7 9.Qxc6 Qe4+ 10.Kg1
0:00	1/4	-2.97	3655		8...Kh7 9.Qd7+ Qg7 10.Qxc6 d4 11.Qe4+
					Kh8
0:00	1/5	-2.52	11562		8...Kh7 9.Qd7+ Qg7 10.Qxc6 d4 11.Qe4+
					Kg8 12.Qd3
0:00	1/6	-2.60	20791		8...Kh7 9.Qd7+ Qg7 10.Qxc6 d4 11.Qe4+
					Kg8 12.Qe8+ Qf8 13.Qxf8+ Kxf8
0:00	1/7	-2.40	41017		8...Kh7 9.Qd7+ Qg7 10.Qxc6 d4 11.Qe4+
					Kg8 12.Qe8+ Qf8 13.Qxf8+ Kxf8 14.Kf3
0:01	2/8	-2.41	82665		8...Kh7 9.Qd7+ Qg7 10.Qxc6 Qe5
					11.Qb7+ Kh8 12.Qc8+ Kg7 13.Qb7+
					Kg8 14.Qc8+ Kf7 15.Qd7+ Kf6
0:02	3/9	-2.29	209624		8...Kh7 9.Qd7+ Qg7 10.Qxc6 Qe5
					11.Qb7+ Kh8 12.Qa8+ Kg7 13.Qa7+
					Kg6 14.Qe3 Qxe3 15.fxe3
0:08	4/10	-2.29	671211		8...Kh7 9.Qd7+ Qg7 10.Qxc6 Qe5
					11.Qb7+ Kg6 12.Qb1+ Qe4+ 13.Qxe4+
					dxe4 14.Kf1 Kf5 15.Ke2 Kf4 16.Kd2
					h5 17.Kc3
0:17	5/11	-2.27	1510641		8...Kh7 9.Qd7+ Qg7 10.Qxc6 Qe5
					11.Qb7+ Kg6 12.Qb1+ Qe4+ 13.Qxe4+
					dxe4 14.Kg3 Kf5 15.h4 gxh4+ 16.Kxh4
					Kf4 17.Kh5 Kf3
1:03	6/12	-2.38	5736055		8...Kh7 9.Qd7+ Qg7 10.Qxc6 Qe5
					11.Qb7+ Kg6 12.Qb1+ Qe4+ 13.Qxe4+
					dxe4 14.Kf1 Kf5 15.Ke1 Ke5 16.Kd2
					Kd4 17.Ke2 h5
2:29	7/13	-2.31	13712201	8...Kh7 9.Qd7+ Qg7 10.Qxc6 Qe5
					11.Qb7+ Kg6 12.Qc6+ Kh5 13.Qd7
					Qe4+ 14.Kg3 Kg6 15.Qd6+ Kg7 16.Qd7+
					Kg8 17.Qd8+ Kh7 18.Qf6 Qh4+ 19.Kg2

jm



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