Author: John Merlino
Date: 12:04:33 09/13/02
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On September 13, 2002 at 11:11:00, Jim Monaghan wrote: >Hi, > >[D] 2r1r1k1/pp1nbpp1/4pn1p/q3NN1P/P1pP1B2/2P5/1PQ2PP1/R3R1K1 w - - > >Most everyone enjoys a good king hunt, but perhaps this one is not so clear. >There are a lot of different ways White can sac his pieces in Black's king's >field here. The game went: > >[Event "Wijk aan Zee"] >[Site "?"] >[Date "1979"] >[Round "-"] >[White "Gaprindashvili"] >[Black "Nikolac"] >[Result "1-0"] >[FEN "2r1r1k1/pp1nbpp1/4pn1p/q3NN1P/P1pP1B2/2P5/1PQ2PP1/R3R1K1 w - - 0 1"] >[SetUp "1"] > >1. Nxg7 Kxg7 2. Bxh6+ Kxh6 3. Nxf7+ Kxh5 4. g4+ Kh4 5. f3 Nxg4 6. Re4 >1-0 > >I think you may get a lot of different answers with this position depending on >the analysis engine chosen. > >Cheers, >Jim Analysis done with Chessmaster 9000 on a PIII-600. It does not see a sacrifice at all, but instead plays Nxd7. The problem with the line that was played in the game is that 2...Kxh6 is a huge blunder. 2...Kg8, on the other hand, appears to lead to a draw: Time Depth Score Positions Moves 0:00 1/3 -2.41 1199 2...Kxh6 3.Nxf7+ Kxh5 4.Qe2+ Kg6 5.Qxe6 0:00 1/4 -1.75 5313 2...Kxh6 3.Nxf7+ Kxh5 4.Rxe6 Bf8 5.Ne5 Nxe5 6.Rxf6 0:00 1/5 -1.85 17321 2...Kxh6 3.Nxf7+ Kxh5 4.Rxe6 Bf8 5.Ne5 Kh4 0:02 1/6 0.00 73190 2...Kxh6 3.Nxf7+ Kxh5 4.g4+ Kxg4 5.Qg6+ Kh4 6.Re4+ Nxe4 7.Qxe4+ Kh5 8.Qh7+ Kg4 9.Qe4+ Kh5 0:04 1/7 3.57 274068 2...Kxh6 3.Nxf7+ Kg7 4.Qg6+ Kf8 5.Ng5 Qxg5 6.Qxg5 Bd6 7.h6 Ke7 8.h7 0:04 1/7 0.19 311140 2...Kg8 3.Re3 Nxe5 4.Rxe5 Nd5 5.Rxe6 Nf6 6.Re5 0:06 1/8 0.00 448506 2...Kg8 3.Qc1 Kh7 4.Qc2+ Kg8 0:11 1/9 0.00 860292 2...Kg8 3.Qc1 Kh7 4.Qc2+ Kg8 0:28 1/10 0.00 2126834 2...Kg8 3.Qc1 Kh7 4.Qc2+ Kg8 1:24 2/11 0.00 6637293 2...Kg8 3.Qc1 Kh7 4.Qc2+ Kg8 4:06 3/12 0.00 20927050 2...Kg8 3.Qc1 Kh7 4.Qc2+ Kg8 ...whereas 2...Kxh6: Time Depth Score Positions Moves 0:00 1/3 -1.75 3150 3.Nxf7+ Kxh5 4.Rxe6 Bf8 5.Ne5 Nxe5 6.Rxf6 0:00 1/4 -1.85 10110 3.Nxf7+ Kxh5 4.Rxe6 Bf8 5.Ne5 Kh4 0:01 1/5 0.00 60561 3.Nxf7+ Kxh5 4.g4+ Kxg4 5.Qg6+ Kh4 6.Re4+ Nxe4 7.Qxe4+ Kh5 8.Qh7+ Kg4 9.Qe4+ Kh5 0:05 1/6 3.45 326242 3.Nxf7+ Kg7 4.Qg6+ Kf8 5.Ng5 Qxg5 6.Qxg5 Bd6 7.h6 Ke7 8.h7 0:07 1/7 3.40 552350 3.Nxf7+ Kg7 4.Qg6+ Kf8 5.Ng5 Qxg5 6.Qxg5 Bd6 7.h6 Re7 8.a5 e5 0:19 1/8 4.22 1563593 3.Nxf7+ Kg7 4.Qg6+ Kf8 5.h6 Ba3 6.Ng5 Ke7 7.Rxe6+ Kd8 8.Rxe8+ Nxe8 9.h7 Nf8 10.Qh5 Rc5 11.dxc5 0:50 1/9 4.80 4223661 3.Nxf7+ Kg7 4.Qg6+ Kf8 5.h6 Ba3 6.Ng5 Ke7 7.Rxe6+ Kd8 8.Nf7+ Kc7 9.Qg3+ Ne5 10.Rxe5 Rxe5 11.Rxa3 Re8 12.dxe5 3:10 1/10 6.42 16890907 3.Nxf7+ Kg7 4.Qg6+ Kf8 5.h6 Bb4 6.Ng5 Ke7 7.Rxe6+ Kd8 8.Rxe8+ Nxe8 9.h7 Rc6 10.Nf7+ Kc8 11.Nd6+ Nxd6 12.h8=Q+ Kc7 13.cxb4 Qxb4 jm
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