Author: Oliver Roese
Date: 20:07:25 06/08/00
Go up one level in this thread
[D]8/4k1pp/5p2/P1p1p3/2Qq4/1P4P1/5PKP/8 b
[Event "NRW 4er-Pokal"]
[Site "Germany"]
[Date "2000.06.04"]
[Round "?"]
[White "Grimm, S."]
[Black "N.N"]
[Result "1/2-1/2"]
[FEN "8/4k1pp/5p2/P1p1p3/2Qq4/1P4P1/5PKP/8 b - - 0 1"]
1...Qxc4 ({This position occured last sunday in a team event. It was the
last game. I and a team colleague of mine were "kibitzes". Our man had white.
Obviously black is in trouble here. But black has the chance here to swap the
queens and go into a pawn ending. He pondered a while and finally he played
1...Qd6. The game went on with 2.Qe4 and finally he lost. My teammate took me
aside: "What do you think about 1.Qxc4?" he asked. "Well, white opens the
kingside with g4 and wins.", i said. "Wrong!" he told me. We made a blindgame,
me playing white and he took me along up to the 18th move in this analysis. "I
see.", i said, "But maybe white has some other possibilities." I went to the
board, puzzled a while, and came back. "What about f4?" i asked. He hesitated
shortly and showed me the winning line for black. In a few seconds he refuted a
line that costed me several minutes! I went to the board again, trying hard to
refute Qxc4. Eventually i came back. "What about g4, Kg3 and then f4?" He
ponderd a while and then quick as a flash he showed me the refutation again. "So
this guy is tough!", i concluded for myself. After the end of the game, we
showed them what he had found. They were both surprised. Finally we were
interested to see if there are any winningchances in the resulting QQ-endgame.
Should i tell you who told us 19..Kc2 ? This is one of the few examples, there
a skilled human can outperform current hard/software. If they can solve it all!
I tried a few minutes with crafty, but gave up at the end. Can your computer
come up with 1...Qxc4! ? Oliver Roese } 1...Qd6 ) 2.bxc4 Kd6 3.g4 ( 3.f4??
exf4 4.gxf4 f5 -+ 5.Kg3 g6 6.Kh4 ( 6.h4 h5 ) 6...h6 ) 3...g6 4.Kf3 ( 4.Kg3?? Kc6
5.f4 Kb7 6.fxe5 fxe5 7.Kf3 Ka6 8.Ke4 Kxa5 9.Kxe5 Kb4 10.Kd5 g5 -+ ) 4...f5
5.gxf5 gxf5 6.Kg3 Kc6 7.Kh4 h6 8.Kh5 e4 9.Kh4 Kb7 10.Kg3 Ka6 11.Kf4 Kxa5 12.Kxf5
Kb4 13.Kxe4 Kxc4 14.f4 Kb3! 15.f5 c4 16.f6 c3 17.f7 c2 18.f8=Q c1=Q = 19.Qb8+
Kc2! 20.Qc7+ Kd1 21.Qxc1+ Kxc1 22.Kf5 Kd2 23.Kg6 Ke3 24.Kxh6 Kf4 1/2-1/2
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