Author: Uri Blass
Date: 17:49:45 08/21/02
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On August 21, 2002 at 20:12:38, Vincent Diepeveen wrote: >On August 21, 2002 at 19:24:19, Uri Blass wrote: > >As a human i agree. i searched with a version with no dangerous >extensions obviously. latest experimental one. can see it from the >output even. just 2 k7 cpu's that's all. > >But if i go make a few moves i see a possible win is anything but >easy. For sure it is deep and needing EGTBs (which i haven't turned >on in this version of course as my windows gets too slow then and >machne requires a reboot). > >My program is just evaluating it as i want it to evaluate it. The >stupid rook on g2 however seems to assure white from losing here. >Probably i misevaluate the thing there as being not too bad >instead of being worth a pawn. > >However it is still far from easy to proof this to be a win if it is >anyway. I will not draw conclusions about it. It is a typical computer >position. Why do you care you played nxh4 here? Movei played Nxh4 and lost the game. I want a test suite to have mistakes from movei's games and the position is from movei's game. In the first position yace says 1.79 pawns for white for Qa5 when after Qa3(the game move) I could prove a score that is less than 0.5 pawn for white Here is yace's analysis after few hours on p850. I am not convinced that +1.79 is a win but it suggests that Qa5 may be a win. [D]4r3/p2q2k1/2pp4/2p4b/QrP1P2b/1P1P1Pp1/P3N1R1/3RN2K w - - 0 1 36.Qa5 Rf8 37.Nxg3 Qh3+ 38.Rh2 Qxg3 39.Rg2 Rxf3 40.Rxg3+ Bxg3 41.Kg2 Rf7 42.Rb1 Be5 43.a3 Rb8 44.Kh1 +- (1.79) Depth: 15 05:55:42 2014634kN > >To proof white to be not drawing is very deep. I agree and the score that I proved with the help of yace after Nxh4 and hours of going backwards is 0.89 pawns for black (I guess that it could be possible to prove -1.xx by analyzing for more hours or with better hardware). Uri
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