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Subject: Re: Crash and burn on this position -- some commercial programs don't get it

Author: Uri Blass

Date: 01:15:20 12/12/01

Go up one level in this thread

On December 12, 2001 at 00:03:03, Dann Corbit wrote:

>And some amateur programs solve it right away.
>
>[D]5rk1/ppq4p/3b2p1/1b1p1p2/3Pr3/2P2QP1/P1BB1P1P/R3R1K1 w - - am Bxe4; bm Bh6;
>
>See http://f11.parsimony.net/forum16635/messages/18963.htm for a discussion.

Gambittiger has no problem to find Bh6.
I did not see explantion why Bxe4 is losing in the relevant link.

The prorams that find Bh6 prefer this move for positional reasons.
Can a program find a winnin score for black after Bxe4?

New position
5rk1/ppq4p/3b2p1/1b1p1p2/3Pr3/2P2QP1/P1BB1P1P/R3R1K1 w - - 0 1

Analysis by Gambit Tiger 2.0:

1.Bh6 Rf7 2.a4 Rxe1+ 3.Rxe1 Bc6 4.Bb3 f4 5.Bxd5 Bxd5 6.Qxd5 Qxc3
  =  (0.24)   Depth: 7   00:00:00  76kN
1.Bh6 Rf7 2.Bxe4 fxe4 3.Qg4 Rf5 4.a4 Bd3 5.Rec1
  ²  (0.30)   Depth: 8   00:00:00  141kN
1.Bh6 Rf7 2.a4 Bc4 3.Bxe4 fxe4 4.Qg4 Rf5 5.Qh3
  ²  (0.26)   Depth: 9   00:00:01  330kN
1.Bh6 Rf7 2.a4 Bc4 3.Bxe4 fxe4 4.Qg4 Rf5 5.f3 exf3 6.Re8+ Kf7
  =  (0.18)   Depth: 10   00:00:03  654kN
1.Bh6 Rf7 2.a4 Bc4 3.Bxe4 fxe4 4.Qg4 Rf5 5.Rab1 Kf7 6.Re3 Bd3
  =  (0.24)   Depth: 11   00:00:07  1564kN
1.Bh6 Rf7 2.a4 Ba6 3.h3 Bc4 4.Bxe4 fxe4 5.Qg4 Rf5 6.a5 a6 7.Qh4
  =  (0.16)   Depth: 12   00:00:19  3902kN

(Blass, Tel-aviv 12.12.2001)

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