Author: Kurt Utzinger
Date: 21:43:15 01/18/02
Go up one level in this thread
On January 17, 2002 at 21:38:44, David Rasmussen wrote: >[D]2r1r1k1/1b4p1/2p1p2p/pp2q3/1P6/PQ2P3/5PPP/1BR2RK1 w - - 0 25 > >What program plays Rc5, even though it allows black to save his pawn by a4? bxa5 >wins a pawn for white, but leaves doubles isolated pawns on the a-file, which >allows counterplay. With 25. Rc5 a4 white has all the positional advantages. > >/David There seems to be no chances for today's programs to understand this position. Below some analysis for various programs: Kurt Neue Partie 2r1r1k1/1b4p1/2p1p2p/pp2q3/1P6/PQ2P3/5PPP/1BR2RK1 w - - 0 1 Analysis by Chess Tiger 14.0 on Ath 1.4/256 with 32 MB hash: 1.bxa5 Ta8 2.Db4 Dc7 3.Lg6 Tf8 4.Dg4 De5 +- (1.48) Tiefe: 9 00:00:00 168kN 1.bxa5 Dd5 2.Dc2 c5 3.Dh7+ Kf8 4.f3 De5 5.Lg6 Ted8 +- (1.56) Tiefe: 9 00:00:02 864kN 1.bxa5 Dd5 2.Dc2 c5 3.f4 Ted8 4.a6 Lxa6 5.Dh7+ Kf7 6.Lg6+ Kf6 +- (1.66) Tiefe: 10 00:00:04 1465kN 1.bxa5 Dd5 2.Dxd5 exd5 3.Lf5 Tc7 4.Ld3 c5 5.Lxb5 Ta8 6.h3 Txa5 +- (1.62) Tiefe: 11 00:00:06 2464kN 1.bxa5 Dd5 2.Dc2 c5 3.f4 Ted8 4.Tf2 Dh5 5.Dh7+ Kf7 6.f5 Td1+ 7.Txd1 Dxd1+ 8.Tf1 +- (1.62) Tiefe: 12 00:00:16 6216kN 1.bxa5 Ta8 2.Db4 Dc7 3.De4 Kf8 4.Dh7 De5 5.Tfd1 Ke7 6.Tc5 Df6 7.a4 Txa5 8.axb5 cxb5 +- (1.68) Tiefe: 13 00:00:48 18642kN 1.bxa5 Dg5 2.Le4 De7 3.a6 Lxa6 4.Lxc6 Tf8 5.Lxb5 Txc1 6.Txc1 Lxb5 7.Dxb5 Dxa3 8.Dc4 +- (1.86) Tiefe: 14 00:02:55 69061kN 1.bxa5 Dg5 2.Le4 De5 3.Lf3 Te7 4.a4 bxa4 5.Dxa4 c5 6.Lxb7 Txb7 7.a6 Tf7 8.Dc4 Ta8 9.Tc2 +- (1.90) Tiefe: 15 00:07:38 185226kN (Utzinger, Wetzikon 18.01.2002) ------------------------------------------------------------------------------------------- Neue Partie 2r1r1k1/1b4p1/2p1p2p/pp2q3/1P6/PQ2P3/5PPP/1BR2RK1 w - - 0 1 Analysis by Fritz 7a on Ath 1.4/256 with 32 MB hash: 1.f4! ± (1.19) Tiefe: 9/29 00:00:00 338kN 1.f4 Df6 2.Dc2 axb4 3.axb4 Ta8 ± (1.25) Tiefe: 9/30 00:00:00 488kN 1.f4 Dd5 2.Dc2 c5 3.bxc5 Txc5 4.Dh7+ Kf8 5.Le4 Dd2 6.Txc5 Dxe3+ 7.Kh1 Lxe4 ± (1.29) Tiefe: 10/29 00:00:01 1294kN 1.Dc2! ± (1.32) Tiefe: 10/29 00:00:03 2222kN 1.Dc2 Df6 2.f4 Ta8 3.Dh7+ Kf7 4.Tc5 axb4 5.axb4 Ta4 6.De4 Tea8 7.Ld3 ± (1.10) Tiefe: 11/35 00:00:05 3758kN 1.f4! ± (1.13) Tiefe: 11/35 00:00:06 4248kN 1.f4! ± (1.29) Tiefe: 11/35 00:00:07 5209kN 1.f4 Dd5 2.Dc2 c5 3.bxc5 Txc5 4.Dh7+ Kf8 5.Le4 Txc1 6.Lxd5 Txf1+ 7.Kxf1 exd5 ± (1.25) Tiefe: 12/31 00:00:14 10186kN 1.f4 Dd5 2.Dc2 c5 3.bxa5 Kf8 4.f5 e5 5.f6 e4 6.fxg7+ ± (1.38) Tiefe: 13/37 00:00:50 37096kN 1.f4 Dd5 2.Dc2 Df5 3.Dxf5 exf5 4.Lxf5 Ta8 5.e4 axb4 6.axb4 Ta4 7.Tb1 ± (1.29) Tiefe: 14/39 00:01:24 63231kN 1.f4 Dd5 2.Dc2 Df5 3.Dxf5 exf5 4.Lxf5 Ta8 5.e4 axb4 6.axb4 Ta4 7.Tb1 ± (1.35) Tiefe: 15/40 00:03:58 183232kN 1.f4 Dd5 2.Dc2 Df5 3.Dxf5 exf5 4.Lxf5 Ta8 5.e4 axb4 6.axb4 Ta4 7.Tb1 Kf7 ± (1.29) Tiefe: 16/41 00:10:45 499900kN (Utzinger, Wetzikon 18.01.2002) -------------------------------------------------------------------------------------------- Neue Partie 2r1r1k1/1b4p1/2p1p2p/pp2q3/1P6/PQ2P3/5PPP/1BR2RK1 w - - 0 1 Analysis by Gandalf 4.32h on Ath 1.4/256 32 MB hash: 1.bxa5 Tf8 ± (0.84) Tiefe: 2 00:00:00 1.bxa5 Tf8 2.f4 ± (1.32) Tiefe: 3 00:00:00 1.bxa5 Dd5 2.Dxd5 exd5 3.Lg6 ± (1.15) Tiefe: 4 00:00:00 1.bxa5 Dd5 2.Db2 c5 3.f4 +- (1.42) Tiefe: 5 00:00:00 14kN 1.bxa5 Dd5 2.Dd3 c5 3.e4 Dc6 ± (1.24) Tiefe: 6 00:00:00 38kN 1.bxa5 Dd5 2.Db2 c5 3.f4 e5 4.Lg6 ± (1.29) Tiefe: 7 00:00:00 108kN 1.bxa5 Ta8 2.f4 Dd5 3.Dc3 e5 4.fxe5 Dxe5 5.Dxe5 Txe5 ± (1.21) Tiefe: 8 00:00:01 300kN 1.Tc5 ± (1.23) Tiefe: 8 00:00:02 650kN 1.Tc5 Df6 2.bxa5 Ta8 3.Le4 Txa5 4.Lxc6 Lxc6 5.Txc6 ± (1.28) Tiefe: 8 00:00:02 650kN 1.Tc5 a4 2.Dd3 Df6 3.Tfc1 Tcd8 4.Dh7+ Kf7 5.f4 Td2 ± (1.15) Tiefe: 9 00:00:04 1400kN 1.bxa5 ± (1.16) Tiefe: 9 00:00:04 1400kN 1.bxa5 Dd5 2.Db2 Ted8 3.f3 Ta8 4.Le4 Dd6 5.Dc3 ± (1.32) Tiefe: 9 00:00:08 2700kN 1.bxa5 Dd5 2.Dc2 c5 3.Dh7+ Kf8 4.f3 De5 5.Lg6 Ted8 +- (1.56) Tiefe: 10 00:00:20 6800kN 1.bxa5 Dd5 2.Dc2 c5 3.f4 Ta8 4.Tf2 Kf7 5.Dh7 Dh5 +- (1.56) Tiefe: 11 00:00:37 12500kN 1.bxa5 Ta8 2.Tfd1 Df6 3.Td7 Te7 4.Tcd1 Txd7 5.Txd7 Lc8 +- (1.68) Tiefe: 12 00:03:10 63100kN (Utzinger, Wetzikon 19.01.2002) -------------------------------------------------------------------------------------------- Neue Partie 2r1r1k1/1b4p1/2p1p2p/pp2q3/1P6/PQ2P3/5PPP/1BR2RK1 w - - 0 1 Analysis by Junior 7 on Ath 1.4/256 with 32 MB hash: 1.bxa5 Ted8 ² (0.50) Tiefe: 3 00:00:00 1.Lg6 Ted8 2.bxa5 ± (0.87) Tiefe: 3 00:00:00 1.Lg6 Ted8 2.bxa5 Td2 ± (0.91) Tiefe: 6 00:00:00 1kN 1.Dd3 axb4 2.Dh7+ Kf8 ± (1.00) Tiefe: 6 00:00:00 11kN 1.Dd3 c5 2.Dh7+ Kf8 3.Lg6 Ted8 4.bxa5 ± (1.29) Tiefe: 9 00:00:00 60kN 1.Dd3 Ted8 2.Dh7+ Kf7 3.Lg6+ Ke7 4.Ld3 axb4 5.axb4 Th8 6.Dg6 Thd8 ± (1.10) Tiefe: 12 00:00:01 1753kN 1.bxa5 Ted8 2.f4 Dd5 3.Dc2 Dd2 4.De4 Td6 5.Dh7+ Kf8 6.Lg6 Dxe3+ ± (1.17) Tiefe: 12 00:00:02 2484kN 1.bxa5 Df6 2.a4 b4 3.Dxb4 La6 4.Tfd1 Tf8 5.Td2 Tb8 6.Dg4 e5 ± (1.34) Tiefe: 15 00:00:15 17673kN 1.bxa5 Df6 2.a4 Ta8 3.axb5 cxb5 4.Dd3 Dg5 5.Dh7+ Kf8 6.g3 Lf3 7.Lg6 Tec8 ± (1.33) Tiefe: 17 00:01:05 72942kN 1.bxa5 Df6 2.a4 Ta8 3.axb5 cxb5 4.Tc7 Te7 5.Tfc1 Txc7 6.Txc7 Tf8 7.f3 Ld5 8.Dxb5 Da1 ± (1.30) Tiefe: 18 00:03:00 194587kN 1.bxa5 Dd5 2.Dc2 Df5 3.Dd1 Df6 4.Dd3 Ted8 5.Dh7+ Kf7 6.Ld3 c5 7.Lxb5 Dg5 8.e4 Df4 ± (1.28) Tiefe: 19 00:09:59 643267kN (Utzinger, Wetzikon 18.01.2002) -------------------------------------------------------------------------------------------- Neue Partie 2r1r1k1/1b4p1/2p1p2p/pp2q3/1P6/PQ2P3/5PPP/1BR2RK1 w - - 0 1 Analysis by Shredder 6.32 on Ath 1.4/256 with 32 MB hash: 1.bxa5 +- (1.44) Tiefe: 1/2 00:00:00 1.bxa5 +- (1.44) Tiefe: 1/2 00:00:00 1.bxa5 Dd5 ± (1.19) Tiefe: 2/4 00:00:00 1.bxa5 Dd5 ± (1.19) Tiefe: 2/4 00:00:00 1.bxa5 Dd5 2.Dc3 +- (1.44) Tiefe: 3/6 00:00:00 1.bxa5 Dd5 2.Dc3 +- (1.44) Tiefe: 3/6 00:00:00 1.bxa5 Dd5 2.Lh7+ Kxh7 3.Dd3+ Dxd3 ± (1.19) Tiefe: 4/8 00:00:00 1.bxa5 Dd5 2.Dc2 c5 3.Dh7+ Kf8 ± (1.18) Tiefe: 4/8 00:00:00 1.Dd3 Dg3 ± (1.19) Tiefe: 4/8 00:00:00 1.Dd3 axb4 2.Dh7+ Kf8 3.axb4 ± (1.35) Tiefe: 4/8 00:00:00 1.Dd3 axb4 2.axb4 c5 3.Dxb5 Dd5 ± (1.33) Tiefe: 5/10 00:00:00 1.Tc5 Dxe3 2.Dxe3 axb4 ± (1.34) Tiefe: 5/10 00:00:00 1.Tc5 Dc7 2.Lg6 a4 3.Dc3 +- (1.43) Tiefe: 5/10 00:00:00 1.Tc5 Dc7 2.Lg6 a4 3.Da2 Te7 +- (1.55) Tiefe: 6/12 00:00:00 1.Tc5 Df6 2.bxa5 Ta8 3.Le4 Tec8 4.Lf5 Txa5 5.Dxe6+ Df7 +- (1.64) Tiefe: 7/14 00:00:00 52kN 1.Tc5 Df6 2.bxa5 Ta8 3.Le4 Df8 4.Db4 Txa5 5.Lxc6 +- (1.48) Tiefe: 8/16 00:00:00 103kN 1.Tc5 Df6 2.bxa5 Ta8 3.Le4 De7 4.Te5 Dd6 5.Dc3 +- (1.48) Tiefe: 9/18 00:00:00 201kN 1.Tc5 Df6 2.bxa5 Ta8 3.Le4 Tec8 4.Db4 Dd8 5.Te5 c5 6.Dxb5 Lxe4 7.Txe4 Dxa5 8.Dxa5 Txa5 9.Txe6 Txa3 +- (1.43) Tiefe: 10/20 00:00:02 520kN 1.bxa5 Dd5 2.Db2 Tcd8 3.a4 Dd6 4.Tfd1 bxa4 5.Txd6 Txd6 +- (1.44) Tiefe: 10/20 00:00:03 832kN 1.bxa5 Dd5 2.Db2 c5 3.f3 La6 4.Dc2 Kf8 5.Tfd1 De5 +- (1.52) Tiefe: 10/20 00:00:04 1075kN 1.bxa5 Dd5 2.Db2 c5 3.f3 La6 4.Dc2 De5 5.Dh7+ Kf8 6.Le4 Ted8 +- (1.53) Tiefe: 11/22 00:00:05 1552kN 1.bxa5 Dd5 2.Db2 c5 3.f3 Dg5 4.f4 Dg4 5.Tf2 La6 6.De5 c4 7.Td2 +- (1.56) Tiefe: 12/24 00:00:11 3209kN 1.Tc5 Df6 2.bxa5 Ta8 3.Td1 Txa5 4.Td7 Lc8 5.Tc7 g6 +- (1.57) Tiefe: 12/24 00:00:14 4290kN 1.Tc5 Df6 2.bxa5 Ta8 3.Td1 Ted8 4.Txd8+ Txd8 5.f4 De7 6.Te5 +- (1.63) Tiefe: 12/24 00:00:19 5662kN 1.Tc5 Df6 2.bxa5 Ta8 3.Td1 De7 4.Dc2 Ted8 5.Td4 Txd4 6.Dh7+ Kf8 7.exd4 Txa5 +- (1.51) Tiefe: 13/26 00:00:36 10877kN 1.bxa5 Dd5 2.Db2 c5 3.f3 Dg5 4.f4 Dg4 5.Tf2 La6 6.De5 Tcd8 7.Dxc5 +- (1.52) Tiefe: 13/26 00:00:48 14473kN 1.bxa5 Dd5 2.Dc2 c5 3.f4 Ted8 4.Tfd1 Dh5 5.Txd8+ Txd8 6.Dxc5 +- (1.57) Tiefe: 13/26 00:01:00 17905kN 1.bxa5 Dd5 2.Db2 c5 3.f3 Dg5 4.f4 Dd5 5.Tfd1 Dc6 6.Dc2 Ta8 7.Dg6 Ted8 8.Txd8+ +- (1.63) Tiefe: 14/28 00:01:45 31121kN 1.Tfd1 c5 2.Dc2 axb4 3.Dh7+ Kf8 4.Td7 Ted8 5.Txb7 Td5 +- (1.64) Tiefe: 14/28 00:03:22 60123kN 1.Tfd1 c5 2.Dc2 Ted8 3.bxc5 Txd1+ 4.Txd1 Kf8 5.Td7 Txc5 6.Df5+ exf5 7.Tf7+ Kxf7 +- (1.64) Tiefe: 14/28 00:04:36 82852kN 1.Tfd1 c5 2.Dc2 Ted8 3.bxc5 Txd1+ 4.Txd1 Kf8 5.Dg6 Ke7 6.f4 Dxe3+ 7.Kh1 Kf8 8.Td8+ ± (1.40) Tiefe: 15/30 00:07:39 137942kN 1.bxa5 Dd5 2.Dc2 c5 3.f4 Ted8 4.Dh7+ Kf8 5.Tf2 Df5 6.Dxf5+ exf5 7.Lxf5 +- (1.41) Tiefe: 15/30 00:08:22 150154kN 1.bxa5 Dd5 2.Dc2 c5 3.f4 Df5 4.De2 Dd5 5.Tfd1 Dc6 6.Dc2 Ta8 7.Dg6 Kf8 8.e4 Kg8 +- (1.62) Tiefe: 15/30 00:09:35 171078kN 1.bxa5 Dd5 2.Dc2 c5 3.f4 Df5 4.De2 Dd5 5.Tfd1 Dc6 6.Dc2 Ta8 7.Dg6 Kf8 8.e4 Kg8 +- (1.63) Tiefe: 16/32 00:14:49 264261kN 1.Tc5 Df6 2.bxa5 Ta8 3.Db4 Dd8 4.De4 Kf8 5.La2 Dd6 6.Te5 Dxa3 7.Df4+ +- (1.64) Tiefe: 16/32 00:26:53 486416kN 1.Tc5 Df6 2.bxa5 Ta8 3.Db4 Dd8 4.De4 Kf8 5.La2 Df6 6.Db4 Kg8 +- (1.70) Tiefe: 16/32 00:31:32 574684kN (Utzinger, Wetzikon 19.01.2002)
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