Author: Jon Dart
Date: 11:02:35 03/31/99
Here is an interesting position from a game my program
played on FICS recently:
r1r2k2/1p4pQ/1n1bp2p/p2n1p2/P2P2Nq/1B5P/1P3PP1/R1BR2K1 w - f6
White (the human player) played Re1, leaving the Knight hanging,
and won, after fxg4 Rxe6 Rxc1+ Rxc1 Qg5 Rce1 gxh3 Re8+ Kf7.
Very impressive, especially in a blitz game! However, my program
did not find the best defense : fxg4 Rxe6 gxh3, etc.
Crafty 16.5 likes Re1, but it takes a long time to see it, and
even then, with the amount of time I gave it, assigned it only
a small plus score. I'm not sure it's enough better than the
alternatives to be a "best move". Here is the output:
11 2:49 -0.37 1. Ne3 Qh5 2. Nxd5 Nxd5 3. Bd2 Kf7
4. Bxd5 exd5 5. Bxh6 Bf8 6. b4 Qxh6
7. Qxf5+ Qf6 8. Qxd5+
11 5:37 ++ 1. Re1!!
11 6:20 0.10 1. Re1 fxg4 2. Rxe6 gxh3 3. Qf5+ Nf6
4. Rxd6 h2+ 5. Kh1 Nc4 6. Rd7 b6 7.
d5
11-> 7:39 0.10 1. Re1 fxg4 2. Rxe6 gxh3 3. Qf5+ Nf6
4. Rxd6 h2+ 5. Kh1 Nc4 6. Rd7 b6 7.
d5
12 11:31 0.08 1. Re1 fxg4 2. Rxe6 gxh3 3. Qf5+ Nf6
4. Rxd6 h2+ 5. Kh1 Nc4 6. Rd7 b6 7.
d5 Qg4
12-> 15:35 0.08 1. Re1 fxg4 2. Rxe6 gxh3 3. Qf5+ Nf6
4. Rxd6 h2+ 5. Kh1 Nc4 6. Rd7 b6 7.
d5 Qg4
13 26:30 0.06 1. Re1 fxg4 2. Rxe6 gxh3 3. Qf5+ Nf6
4. Rxd6 Nc4 5. Rd7 h2+ 6. Kh1 <HT>
time=33:20 cpu=99% mat=0 n=344343893 fh=94% nps=172105
ext-> checks=20911812 recaps=1000315 pawns=174053 1rep=1446615
predicted=0 nodes=344343893 evals=34920023
endgame tablebase-> probes done=0 successful=0 plimit=17
hashing-> trans/ref=19% pawn=4% used=99%
Here is the whole game:
[Event "?"]
[Site "FICS"]
[Date "1999.03.30"]
[Round "?"]
[White "bielg"]
[Black "Arasan 5.1"]
[Result "1-0"]
[ECO "D18"]
[WhiteELO "2227"]
[BlackELO "2270"]
[TimeControl "120+12"]
1. Nf3 d5 2. d4 c6 3. c4 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4
Bb4 8. O-O Nbd7 9. h3 O-O 10. Qb3 c5 11. Nh4 Bxc3 12. Nxf5 Bb4
13. Ng3 Nb6 14. Bd3 a5 15. Rd1 cxd4 16. exd4 Nfd5 17. Ne4 Qh4 18. Ng5
h6 19. Bh7+ Kh8 20. Nf3 Qf6 21. Bc2 Kg8 22. Qd3 Rfc8 23. Qh7+ Kf8
24. Ne5 Bd6 25. Ng4 Qh4 26. Bb3 f5 27. Re1 fxg4 28. Rxe6 Rxc1+
29. Rxc1 Qg5 30. Rce1 gxh3 31. Re8+ Kf7 1-0
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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