Author: Uri Blass
Date: 12:49:12 12/26/02
Go up one level in this thread
On December 26, 2002 at 15:45:06, Uri Blass wrote: >On December 26, 2002 at 14:06:13, Art Basham wrote: > >>Sure, Qh5 is a good move, but >>both Ruffian 1.0.1 and Yace 0.99.56 show >>1. Bxh7+ >>in only about 20 seconds (at 6 ply) on my slow computer...! >> >>Looks like a pretty good test move to me...:-) >> >>art... > >Yace shows Qh5 at ply 9(the first ply that it can see a positive score). > >It believes that Bxh7+ is only a draw and Qh5 is better(the same for Ruffian). > >I post only analysis by yace > >New position >[D]r2q1rk1/pb2bppp/1p2p3/nP1n4/8/P2BN1N1/1BP3PP/R2Q1R1K w - - 0 1 > >Analysis by Yace 0.99.56: > >1.Ne3xd5 Qd8xd5 > µ (-1.20) Depth: 1 00:00:00 >1.Qd1-f3 > µ (-0.86) Depth: 1 00:00:00 >1.Qd1-f3 e6-e5 > µ (-1.04) Depth: 2 00:00:00 >1.Qd1-f3 Be7-c5 2.Ne3xd5 > µ (-0.98) Depth: 3 00:00:00 >1.Qd1-h5 Nd5-b4 > µ (-0.95) Depth: 3 00:00:00 >1.Qd1-h5 f7-f5 2.Qh5-f3 > µ (-0.84) Depth: 3 00:00:00 >1.Qd1-h5 f7-f5 2.Ne3-c4 Nd5-f6 > µ (-0.91) Depth: 4 00:00:00 >1.Qd1-h5 f7-f5 2.Ne3-c4 Nd5-f6 3.Qh5-e2 > µ (-0.92) Depth: 5 00:00:00 57kN >1.Bd3xh7+ Kg8xh7 2.Qd1-h5+ Kh7-g8 3.Bb2xg7 f7-f5 4.Bg7-e5 Nd5-f4 5.Be5xf4 Be7xa3 > µ (-0.91) Depth: 5 00:00:01 124kN >1.Bd3xh7+ Kg8xh7 2.Qd1-h5+ Kh7-g8 3.Bb2xg7 Kg8xg7 4.Ng3-f5+ e6xf5 5.Ne3xf5+ >Kg7-f6 6.Qh5-h6+ Kf6-e5 7.Ra1-e1+ Nd5-e3 8.Qh6xe3+ Ke5-d5 9.Nf5xe7+ > ³ (-0.30) Depth: 5 00:00:01 124kN >1.Bd3xh7+ Kg8xh7 2.Qd1-h5+ Kh7-g8 3.Bb2xg7 Kg8xg7 4.Ng3-f5+ e6xf5 5.Ne3xf5+ >Kg7-g8 6.Nf5-h6+ Kg8-g7 7.Nh6-f5+ > = (0.00) Depth: 6 00:00:02 524kN >1.Bd3xh7+ Kg8xh7 2.Qd1-h5+ Kh7-g8 3.Bb2xg7 f7-f5 4.Bg7-e5 Be7-f6 5.Qh5-g6+ >Kg8-h8 6.Ng3xf5 Bf6xe5 7.Qg6-h5+ Kh8-g8 8.Qh5-g4+ Kg8-h8 9.Qg4-h5+ > = (0.00) Depth: 9 00:01:19 30800kN >1.Qd1-h5 h7-h6 2.Bb2xg7 Nd5xe3 3.Qh5xh6 Bb7xg2+ 4.Kh1-g1 Qd8xd3 5.c2xd3 Be7-f6 > = (0.01) Depth: 9 00:01:23 31824kN >1.Qd1-h5 g7-g6 2.Qh5-e5 f7-f6 3.Qe5xe6+ Rf8-f7 4.Ra1-e1 Nd5-c7 5.Qe6-g4 Ra8-c8 > ² (0.30) Depth: 9 00:01:30 34585kN >1.Qd1-h5 g7-g6 2.Ne3-g4 Be7-g5 3.Qh5-h6 e6-e5 4.Bb2xe5 f7-f6 5.Qh6xg5 Kg8-h8 > ² (0.70) Depth: 10 00:02:19 52802kN >1.Qd1-h5 f7-f5 2.Ng3xf5 e6xf5 3.Ne3xf5 Rf8-f6 4.Nf5xe7+ Qd8xe7 5.Qh5xh7+ Kg8-f8 >6.Bb2xf6 g7xf6 7.Qh7xe7+ Kf8xe7 8.Rf1-e1+ Ke7-d7 9.Ra1-d1 > ± (0.91) Depth: 10 00:02:33 57852kN > >(Blass, Tel-aviv 26.12.2002) > > >Uri I was too fast to report that ruffian does not find it because ruffian changes it's mind again to Bxh7+. It is possible that the same could happen to yace with more time. depth=12 3/45(Nxd5) +1.26 Bxh7+ Kxh7 Qh5+ Kg8 Bxg7 Kxg7 Ngf5+ exf5 Nxf5+ Kg8 Rf3 Nf4 Rg3+ Bg5 Rxg5+ Qxg5 Qxg5+ Ng6 Nh6+ Kg7 Rf1 Nc4 a4 Uri
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