Author: Mike Hood
Date: 06:57:39 12/19/05
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On December 19, 2005 at 09:37:07, Rob Basham wrote: >On December 19, 2005 at 06:51:12, Mike Hood wrote: > >>After its mention on Chessbase's site I looked at the Maroczy-Tartakower game >>from 1922. Are there any engines that find the rook sacrifice in move 17? I've >>tried several of the top engines, and none find the move, but after making the >>move manually they agree that it was the best choice. >> >>[Event "Teplitz-Schoenau"] >>[Site "Teplitz-Schoenau"] >>[Date "1922.??.??"] >>[Round "4"] >>[White "Maroczy, Geza"] >>[Black "Tartakower, Saviely"] >>[Result "0-1"] >>[ECO "A85"] >>[PlyCount "70"] >>[EventDate "1922.??.??"] >>[EventType "tourn"] >>[EventRounds "13"] >>[EventCountry "CSR"] >>[Source "ChessBase"] >> >>1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. a3 Be7 5. e3 O-O 6. Bd3 d5 7. Nf3 c6 8. O-O Ne4 >>9. Qc2 Bd6 10. b3 Nd7 11. Bb2 Rf6 12. Rfe1 Rh6 13. g3 Qf6 14. Bf1 g5 15. Rad1 >>g4 16. Nxe4 fxe4 17. Nd2 Rxh2 18. Kxh2 Qxf2+ 19. Kh1 Nf6 20. Re2 Qxg3 21. Nb1 >>Nh5 22. Qd2 Bd7 23. Rf2 Qh4+ 24. Kg1 Bg3 25. Bc3 Bxf2+ 26. Qxf2 g3 27. Qg2 Rf8 >>28. Be1 Rxf1+ 29. Kxf1 e5 30. Kg1 Bg4 31. Bxg3 Nxg3 32. Re1 Nf5 33. Qf2 Qg5 34. >>dxe5 Bf3+ 35. Kf1 Ng3+ 0-1 >> >>[D] r1b3k1/pp1n3p/2pbpq1r/3p4/2PPp1p1/PP2P1P1/1BQN1P1P/3RRBK1 b - - 0 1 > > >Yes.. > >Ruffian 1.0.1 finds it less than one second...P3-850 > >but it does not appear to be a winning move....:-) > >I do not know if it is a good test move.... > >regards >Rob I'm not sure if it's a good "test move" either, although it does seem to work spectacularly in this game. I tried it with Ruffian 1.0.5 on my Pentium 4 2.8 MHz machine. Ruffian picked Rxh2 in less than a second, but changed to Be7 after 26 minutes. Analysis by Ruffian 1.0.5: 17...dxc4 18.Bxc4 ² (0.46) Depth: 1/5 00:00:00 17...b6 = (0.13) Depth: 1/5 00:00:00 17...Qg5 = (0.12) Depth: 1/7 00:00:00 17...Qf5 = (0.09) Depth: 1/7 00:00:00 17...Qf5 18.Bg2 = (0.20) Depth: 2/8 00:00:00 17...Qf5 18.c5 Be7 = (0.17) Depth: 3/9 00:00:00 17...Qf5 18.c5 Be7 19.Be2 ² (0.26) Depth: 4/9 00:00:00 17...Qf5 18.c5 Qh5 19.h3 Be7 = (0.11) Depth: 5/12 00:00:00 17...Rxh2 18.Kxh2 Qxf2+ 19.Kh1 Bxg3 20.cxd5 = (-0.09) Depth: 5/16 00:00:00 17...Rxh2 18.Kxh2 Qxf2+ 19.Kh1 Qxg3 20.Re2 dxc4 21.Qxe4 ³ (-0.45) Depth: 6/16 00:00:00 77kN 17...Rxh2 18.Kxh2 Qxf2+ 19.Kh1 Qxg3 20.Re2 h5 21.cxd5 = (-0.11) Depth: 7/16 00:00:00 127kN 17...Rxh2 18.Kxh2 Qxf2+ 19.Kh1 Qxg3 20.Re2 h5 21.cxd5 exd5 22.Rg2 µ (-0.71) Depth: 8/17 00:00:00 376kN 17...Rxh2 18.Kxh2 Qxf2+ 19.Kh1 Qxg3 20.Re2 h5 21.Rc1 Qh4+ 22.Kg1 Qg3+ 23.Rg2 ³ (-0.43) Depth: 9/18 00:00:00 709kN 17...Rxh2 18.Kxh2 Qxf2+ 19.Kh1 Qxg3 20.Re2 h5 21.Qc3 Kh8 22.Rg2 Qh3+ 23.Kg1 ³ (-0.45) Depth: 10/20 00:00:01 1404kN 17...Rxh2 18.Kxh2 Qxf2+ 19.Kh1 Qxg3 20.Re2 h5 21.Qc3 b5 22.cxb5 cxb5 23.Rg2 Qh3+ 24.Kg1 ³ (-0.29) Depth: 11/25 00:00:04 3387kN 17...Rxh2 18.Kxh2 Qxf2+ 19.Kh1 Qxg3 20.Re2 h5 21.Qc3 dxc4 22.bxc4 Kh8 23.c5 Qh4+ 24.Kg1 Qg3+ 25.Rg2 ³ (-0.29) Depth: 12/27 00:00:07 7902kN 17...Rxh2 18.Kxh2 Qxf2+ 19.Kh1 Qxg3 20.Re2 h5 21.Qc3 Kh7 22.Rg2 Qh3+ 23.Kg1 Kh6 24.Be2 dxc4 25.Nxe4 ³ (-0.43) Depth: 13/32 00:00:25 27366kN 17...Rxh2 18.Kxh2 Qxf2+ 19.Kh1 Qxg3 20.Re2 Rb8 21.Rc1 Nf6 22.Qd1 Qh4+ 23.Kg1 Bg3 24.Qc2 h5 25.cxd5 = (-0.09) Depth: 14/33 00:01:00 68104kN 17...Rxh2 18.Kxh2 Qxf2+ 19.Kh1 Qxg3 20.Re2 Rb8 21.Qc3 b5 22.cxb5 cxb5 23.Rc1 h5 24.Rg2 Qh3+ 25.Kg1 Ba6 26.Be2 = (-0.10) Depth: 15/36 00:09:05 563883kN 17...Be7 18.Ra1 Qf7 19.Bg2 b6 20.Re2 Bb7 21.Qc3 Qh5 22.Nf1 Rf8 23.Rc1 Rhf6 24.Nd2 Rf5 = (-0.22) Depth: 15/38 00:26:56 1643012kN 17...Be7 18.Ra1 Qf5 19.Bg2 b6 20.Re2 Bb7 21.a4 Rf8 22.Qc3 Bd6 23.b4 Rhf6 = (-0.23) Depth: 16/38 00:35:00 2116778kN 17...Be7 18.Bg2 b6 19.Re2 Bb7 20.a4 Rf8 21.Qc3 Qf7 22.b4 Qh5 23.Nf1 Bd6 24.Rc1 Rhf6 25.Nd2 e5 = (-0.23) Depth: 17/42 00:55:49 2116778kN
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