Author: Rob Shultz
Date: 12:50:11 03/31/99
Go up one level in this thread
On March 31, 1999 at 14:02:35, Jon Dart wrote: >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 Here is what Fritz 5.32 thought about the position: New position r1r2k2/1p4pQ/1n1bp2p/p2n1p2/P2P2Nq/1B5P/1P3PP1/R1BR2K1 w - - 0 1 Analysis by Fritz 5.32: 1.Bxd5 Nxd5 2.Qh8+ Kf7 ³ (-0.53) depth: 1/6 00:00:00 1.Ne5 = (0.00) depth: 1/8 00:00:00 1.Ne5 Bxe5 2.dxe5 ² (0.28) depth: 2/7 00:00:00 1.Ne5 Bxe5 2.dxe5 Nc4 3.Qh8+ Kf7 ² (0.38) depth: 3/11 00:00:00 2kN 1.Ne5 Qf6 2.Re1 Bxe5 3.Rxe5 ² (0.31) depth: 4/19 00:00:00 6kN 1.Ne5 Bxe5 2.dxe5 Nc4 3.Bxc4 Qxc4 4.Qh8+ Kf7 ² (0.38) depth: 5/23 00:00:00 31kN 1.Ne5 Bxe5 2.dxe5 Qe4 3.Bd2 Qxe5 4.Qh8+ Kf7 = (0.00) depth: 6/23 00:00:00 89kN 1.Ne3 = (-0.12) depth: 6/26 00:00:00 170kN 1.Ne3 Qf6 2.Nxd5 Nxd5 3.Re1 Qxd4 4.Rxe6 = (0.09) depth: 6/26 00:00:00 222kN 1.Ne3 Nf4 2.d5 Ne2+ 3.Kh1 Nxc1 4.Raxc1 Rxc1 5.Rxc1 Qxf2 = (0.00) depth: 7/29 00:00:02 761kN 1.Ne3 Qf6 2.Nxd5 Nxd5 3.Re1 Kf7 4.Bxd5 exd5 5.Bxh6 Qxh6 = (0.00) depth: 8/29 00:00:05 1811kN 1.Ne3 Qf6 2.Nxd5 Nxd5 3.Bxd5 exd5 4.Rd3 Re8 5.Bd2 Bc7 = (0.00) depth: 9/34 00:00:12 4668kN 1.Ne3 Qf6 2.Nxd5 Nxd5 3.Bxd5 exd5 4.Rd3 f4 5.Bd2 Kf7 = (-0.09) depth: 10/35 00:00:31 12323kN 1.Ne3 Qf6 2.Nxd5 Nxd5 3.Bxd5 exd5 4.Rd3 Re8 5.Bd2 Kf7 = (-0.12) depth: 11/35 00:01:21 32413kN 1.Re1 = (-0.09) depth: 11/38 00:03:18 77095kN 1.Re1 fxg4 2.Rxe6 gxh3 3.Qf5+ Nf6 4.Rxd6 hxg2 5.Kxg2 Nc4 = (0.16) depth: 11/38 00:04:31 108843kN 1.Re1 fxg4 2.Rxe6 gxh3 3.Qf5+ Nf6 4.Rxd6 hxg2 5.Kxg2 Nc4 = (0.00) depth: 12/42 00:07:14 179001kN 1.Re1 ² (0.31) depth: 13/44 00:23:56 607207kN 1.Re1 fxg4 2.Rxe6 gxh3 3.Qf5+ Nf6 4.Rxd6 hxg2 5.Kxg2 Nc4 = (0.25) depth: 14/43 01:07:04 1603840kN Rob
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