Author: Uri Blass
Date: 13:26:24 11/07/00
Go up one level in this thread
On November 07, 2000 at 09:03:24, Mogens Larsen wrote: >On November 07, 2000 at 07:48:19, Uri Blass wrote: > >>[D]3rr1k1/1bq1b1p1/pp1ppnnp/2p5/2P1P3/1PNBBN1P/P2Q1PP1/R2R2K1 w - - 0 1 >>This position is from the ssdf games >>The target is to avoid Bxh6. >> >>The program that are called "bean counters" have no problem to solve it and >>never consider Bxh6 as best. > >I tried a "bean counter". > >Analysis by LG2000 v2.9a: > >1.a3 Ne5 2.Nxe5 dxe5 > ² (0.33) Depth: 6 00:00:00 4kN >1.a3 Nd7 2.Rab1 Nde5 > ² (0.26) Depth: 6 00:00:00 4kN >1.a3 Nd7 2.Rab1 Nde5 > ² (0.26) Depth: 7 00:00:00 23kN >1.a3 Nd7 2.Qc2 Bf6 3.Rac1 > ² (0.26) Depth: 7 00:00:00 23kN >1.a3 Nd7 2.Qc2 Bf6 3.Rac1 > ² (0.26) Depth: 8 00:00:00 304kN >1.a3 Nd7 2.Rab1 Bf6 3.Rbc1 Rf8 > = (0.20) Depth: 8 00:00:01 304kN >1.a3 Nd7 2.Rab1 Bf6 3.Rbc1 Rf8 > = (0.20) Depth: 9 00:00:01 1047kN >1.a3 Nd7 2.Rab1 Bf6 3.Rbc1 Nde5 4.Nxe5 Nxe5 > = (0.17) Depth: 9 00:00:02 1047kN >1.a3 Nd7 2.Rab1 Bf6 3.Rbc1 Nde5 4.Nxe5 Nxe5 > = (0.17) Depth: 10 00:00:06 5132kN >1.a3 Nd7 2.Rab1 Rf8 3.Bc2 Bf6 4.Kh1 Nde5 > = (0.15) Depth: 10 00:00:07 5132kN >1.a3 Nd7 2.Rab1 Rf8 3.Bc2 Bf6 4.Kh1 Nde5 > = (0.15) Depth: 11 00:00:24 23456kN >1.a3 Nd7 2.Ne1 Bf6 3.f4 Ndf8 4.Rac1 Qf7 > = (0.22) Depth: 11 00:00:32 23456kN >1.a3 Nd7 2.Ne1 Bf6 3.f4 Ndf8 4.Rac1 Qf7 > = (0.22) Depth: 12 00:00:49 47137kN >1.Bxh6 > = (0.23) Depth: 12 00:01:15 47137kN >1.Bxh6 gxh6 2.Qxh6 Nf8 3.e5 Bxf3 4.gxf3 N6h7 5.Kh1 Bg5 6.Rg1 Qf7 7.Rxg5+ Nxg5 >8.Qxg5+ Qg7 > = (0.22) Depth: 12 00:03:29 47137kN >1.Bxh6 gxh6 2.Qxh6 Nf8 3.e5 Bxf3 4.gxf3 N6h7 5.Kh1 Bg5 6.Rg1 Qf7 7.Rxg5+ Nxg5 >8.Qxg5+ Qg7 > = (0.22) Depth: 13 00:04:09 291559kN >1.Bxh6 gxh6 2.Qxh6 Nf8 3.e5 Bxf3 4.gxf3 N6h7 5.Kh1 Bg5 6.Rg1 Qf7 7.Rxg5+ Nxg5 >8.Qxg5+ Qg7 9.Qh5 > ² (0.51) Depth: 13 00:07:42 291559kN >1.Bxh6 gxh6 2.Qxh6 Nf8 3.e5 Bxf3 4.gxf3 N6h7 5.Kh1 Bg5 6.Rg1 Qf7 7.Rxg5+ Nxg5 >8.Qxg5+ Qg7 9.Qh5 > ² (0.51) Depth: 14 00:07:54 577857kN > >Best wishes... >Mogens LG2000 wants to play 3.e5 and not 3.Ng5 of gandalf. I see that gandlf after more than 10.5 hours at depth 15 has also 3.e5 in the main line and the score dropped to 0.25 pawns for white so it started to understand that 1.Bxh6 is not so good. It got this main line after 5 hours 24 minutes abd 1 second. Gandalf expects 1.Bxh6 gxh6 2.Qxh6 Nf8 3.e5 N6h7 4.Kh1 Kh8 5.Be4 dxe5. 4.Kh1 is strange in this line because 4.Bxh7+ wins a pawn but gandalf does not want to trade the bishop for some reason. Uri
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