Author: K. Burcham
Date: 16:52:38 05/15/02
Go up one level in this thread
On May 15, 2002 at 13:11:14, Keith Ian Price wrote: >Since Dreev won, it seems the sacrifice was not sound. So why should a program >make it? > >kp several will sac the queen. here are three. [D] r2qk2r/1p1nbpp1/2p1p2p/7P/pn1PN3/1Q3N2/PPPB1PP1/2KRR3 w kq - 0 1 Deep Junior 7: 1.Qe3 a3 2.Bxb4 axb2+ 3.Kxb2 Bxb4 4.Qb3 Ba3+ 5.Kb1 b6 6.Ne5 Nxe5 µ (-1.00) Depth: 12 00:00:01 1413kN 1.Qxb4 Bxb4 2.Bxb4 c5 3.dxc5 Qc7 4.Nd6+ Kf8 5.a3 Nxc5 6.Bc3 µ (-0.71) Depth: 12 00:00:01 1452kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Ne5 Nxe5 4.dxe5 b6 5.Nd6+ Kf8 6.Nc8+ Kg8 7.Ne7+ Kh7 8.Bd6 Qb7 9.a3 ³ (-0.55) Depth: 15 00:00:04 7262kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Kb1 b6 4.a3 Rg8 5.Nd6+ ³ (-0.45) Depth: 18 00:00:36 65240kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Kb1 Qf4 4.d5 cxd5 5.Nd6+ ³ (-0.54) Depth: 19 00:02:22 247733kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Kb1 Qf4 4.d5 cxd5 5.Nd6+ ³ (-0.54) Depth: 20 00:05:50 600686kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Kb1 Qf4 4.d5 cxd5 5.Nd6+ ³ (-0.54) Depth: 21 00:13:00 1338182kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.a3 Qf4+ 4.Re3 b6 5.g3 Qb8 6.Ree1 Rg8 7.Nd6+ Kf8 8.Nb7+ c5 9.dxc5 bxc5 10.Nxc5 ³ (-0.52) Depth: 22 00:31:55 3360046kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.a3 Qf4+ 4.Re3 b6 5.g3 Qb8 6.Ree1 Ra6 ³ (-0.52) Depth: 23 01:13:30 3563901kN Crafty 18.11: 1.Qe3 a3 2.Bxb4 Bxb4 3.c3 axb2+ 4.Kxb2 Ba3+ 5.Kc2 Nb6 6.Ne5 Qd5 7.Ra1 0-0 8.Kd1 -+ (-1.77) Depth: 11/18 00:00:10 12758kN 1.Qe3 a3 2.Bxb4 Bxb4 3.c3 axb2+ 4.Kxb2 Qa5 5.Ra1 Ba3+ 6.Kc2 Qd5 7.Rab1 Qxa2+ 8.Kd3 f5 9.Ng3 -+ (-1.98) Depth: 12/20 00:00:31 40245kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Bd6 Qa7 4.Bb4 Kd8 5.Ne5 Nxe5 6.dxe5+ Kc7 7.Re3 -+ (-1.69) Depth: 12/20 00:00:41 53238kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Bd6 Qa7 4.Bb4 Qa6 5.Nd6+ Kf8 6.Nb5+ Kg8 7.Nc7 Qc4 8.Nxa8 Qxb4 -+ (-1.68) Depth: 13/20 00:00:50 65743kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Bd6 Qa7 4.Ba3 Qa6 5.Nd6+ Ke7 6.Ne5 Nxe5 7.Nxb7+ Kf6 8.dxe5+ Kg5 9.Nd6 -+ (-1.60) Depth: 14/24 00:01:36 128740kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Bd6 Qa7 4.Ba3 Kd8 5.Ne5 Nxe5 6.dxe5+ Kc7 7.Bd6+ Kc8 8.Bc5 b6 9.Nd6+ Kc7 µ (-1.40) Depth: 15/24 00:04:12 340847kN Fritz 7: 1.Qc4 Nb6 2.Qe2 Nxa2+ 3.Kb1 a3 4.b3 Nb4 5.Bxb4 Bxb4 6.c3 Bd6 7.Ne5 µ (-0.78) Depth: 11/32 00:00:02 2323kN 1.Qc4 Nb6 2.Qe2 Nxa2+ 3.Kb1 a3 4.b3 Nb4 5.Bxb4 Bxb4 6.c3 Bd6 7.Nxd6+ Qxd6 8.Ne5 µ (-0.91) Depth: 12/30 00:00:05 4168kN 1.Qxb4! µ (-0.87) Depth: 12/37 00:00:12 9922kN 1.Qxb4! µ (-0.72) Depth: 12/37 00:00:12 10189kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Bd6 Qa7 4.Ba3 Kd8 5.Nd6 Rf8 6.Ne4 Re8 7.Nd6 Re7 µ (-0.81) Depth: 13/32 00:00:15 12552kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Bd6 Qa7 4.Ba3 Kd8 5.Nd6 Rf8 6.Ne4 Re8 7.Nd6 µ (-0.81) Depth: 14/40 00:00:30 25281kN 1.Qxb4 Bxb4 2.Bxb4 Qb8 3.Bd6 Qa7 4.Ba3 Qa6 5.Nd6+ Kf8 6.Nb5+ Kg8 7.Nc7 ³ (-0.62) Depth: 15/38 00:01:11 60933kN kburcham
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