Author: Dann Corbit
Date: 01:25:13 12/12/01
Go up one level in this thread
On December 12, 2001 at 04:15:20, Uri Blass wrote: >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. That is interesting. Tiger 14 had a very hard time. I posted a short analysis, but I also ran much longer and it never found it. I guess this shows that the eval of the two programs really is very different. >I did not see explantion why Bxe4 is losing in the relevant link. I am really sure that it is a disaster. I don't remember what it contained, but I was watching the Zarkov pv for Bxe4, and it was lights out. I think something is getting null move pruned or whatever by some of the programs. Bxe4 is a loser. >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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