Author: Robert Hyatt
Date: 08:39:36 05/16/02
Go up one level in this thread
On May 15, 2002 at 19:52:38, K. Burcham wrote: >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. Note that _all_ three think black is much better after white makes the sac. > [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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