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Subject: WAC 258

Author: Uri Blass

Date: 13:55:19 01/02/02

I found that at least in one problem of wac my program find the right move but
gets negative score for white

I talk about WAC 258

[D]r3brkn/1p5p/2p2Ppq/2Pp3B/3Pp2Q/4P1R1/6PP/5R1K w - - bm Bxg6

Here is yace's opinion after 1.Bxg6 Qxg6

New position
r3brkn/1p5p/2p2Pq1/2Pp4/3Pp2Q/4P1R1/6PP/5R1K w - - 0 1

Analysis by Yace 0.99.56:

2.Rxg6+ Nxg6 3.Qg5 Rf7 4.h4 Kh8 5.h5 Nf8 6.Rb1 Ra3 7.Qh6 Ne6 8.Rf1
  =  (-0.12)   Depth: 1   00:00:00
2.Rxg6+ Nxg6 3.Qg5 Rf7 4.h4 Kh8 5.h5 Nf8 6.Rb1 Ra3 7.Qh6 Ne6 8.Rf1
  =  (-0.12)   Depth: 2   00:00:00
2.Rxg6+ Nxg6 3.Qg5 Rf7 4.h4 Kh8 5.h5 Nf8 6.Rb1 Ra3 7.Qh6 Ne6 8.Rf1
  =  (-0.12)   Depth: 3   00:00:00
2.Rxg6+ Nxg6 3.Qg5 Rf7 4.h4 Kh8 5.h5 Nf8 6.Rb1 Ra3 7.Qh6 Ne6 8.Rf1
  =  (-0.12)   Depth: 4   00:00:00
2.Rxg6+ Nxg6 3.Qg5 Rf7 4.h4 Kh8 5.h5 Nf8 6.Rb1 Ra3 7.Qh6 Ne6 8.Rf1
  =  (-0.12)   Depth: 5   00:00:00
2.Rxg6+ Nxg6 3.Qg5 Rf7 4.h4 Kh8 5.h5 Nf8 6.Rb1 Ra3 7.Qh6 Ne6 8.Rf1
  =  (-0.12)   Depth: 6   00:00:00
2.Rxg6+ Nxg6 3.Qg5 Rf7 4.h4 Kh8 5.h5 Nf8 6.Rb1 Ra3 7.Qh6 Ne6 8.Rf1
  =  (-0.12)   Depth: 7   00:00:00
2.Rxg6+ Nxg6 3.Qg5 Rf7 4.h4 Kh8 5.h5 Nf8 6.Rb1 Ra3 7.Qh6 Ne6 8.Rf1
  =  (-0.12)   Depth: 8   00:00:00
2.Rxg6+ Nxg6 3.Qg5 Rf7 4.h4 Kh8 5.h5 Nf8 6.Rb1 Ra3 7.Qh6 Ne6 8.Rf1
  =  (-0.12)   Depth: 9   00:00:00  1kN
2.Rxg6+ Nxg6 3.Qg5 Rf7 4.h4 Kh8 5.h5 Nf8 6.Rb1 Ra3 7.Qh6 Ne6 8.Rf1
  =  (-0.12)   Depth: 10   00:00:00  3kN
2.Rxg6+ Nxg6 3.Qg5 Rf7 4.h4 Kh8 5.Rb1 Nf8 6.Kh2 b5 7.cxb6 Nd7 8.b7 Rb8 9.Rf1
  ³  (-0.29)   Depth: 12   00:00:20  7045kN
2.Qf4 Rf7 3.h4 Bd7 4.h5 Ra1 5.hxg6 Nxg6
  ³  (-0.28)   Depth: 12   00:00:29  10795kN
2.Qf4 Rf7 3.h4 h6 4.Rxg6+ Nxg6 5.Qf5 Nf8 6.Qg4+ Kh7 7.Qf5+ Kh8 8.Kh2 Ra3 9.Qf4
Kh7 10.g3
  =  (-0.10)   Depth: 12   00:00:56  19846kN
2.Qf4 Rf7 3.h4 h6 4.Rxg6+ Nxg6 5.Qf5 Nf8 6.Kh2 Kh8 7.Rf2 Ra3 8.Qf4 Kh7 9.g3
  =  (-0.10)   Depth: 13   00:01:27  29195kN
2.Qf4 Rf7 3.h4 h6 4.Rxg6+ Nxg6 5.Qf5 Nf8 6.Qf4 Kh7 7.Qf5+ Kh8 8.g3 Nd7 9.Qe6 Rb8
  =  (-0.13)   Depth: 14   00:02:42  49564kN
2.Qf4 Rf7 3.h4 h6 4.Rxg6+ Nxg6 5.Qf5 Ne7 6.Qg4+ Kh7 7.h5 Ng8 8.Qf5+ Kh8 9.Qe6 b5
10.cxb6 Re7
  =  (-0.04)   Depth: 15   00:08:00  146140kN

(Blass, Tel-aviv 02.01.2002)

I did not analyze the position for a long time.
Did someone analyze it to find if white is winning?

Uri

Re: WAC 258 Dann Corbit 14:53:12 01/02/02
- Re: WAC 258 Gian-Carlo Pascutto 14:57:33 01/02/02

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