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Subject: Re: A test position (avoiding a speculative sacrifice)

Author: Mogens Larsen

Date: 06:03:24 11/07/00

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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



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