Author: Alex Patterson
Date: 16:56:58 02/11/01
Go up one level in this thread
On February 11, 2001 at 16:26:35, Chuck wrote: >On February 11, 2001 at 15:32:13, Alex Patterson wrote: > >>On February 11, 2001 at 12:58:02, Uri Blass wrote: >> >>>On February 11, 2001 at 12:45:07, Alex Patterson wrote: >>> >>>>On February 11, 2001 at 12:24:21, Vincent Lejeune wrote: >>>> >>>>>in this position : >>>>> >>>>>[d]k7/p7/1p6/3p4/3K1B2/r7/8/4R3 w - - 0 1 >>>>> >>>>>Gambit Tiger 1.0 gives +2.14 for white , I think it's a big overevaluation for >>>>>white ! >>>>> >>>>> >>>>> >>>>>consequence : in this position >>>>> >>>>>[d]k7/p7/1p6/3p4/3K1p2/PP3r2/7B/4R3 b - - 0 1 >>>>> >>>>>Tiger 1.0 wants to play Rf2?? >>>> >>>> >>>>So? Rf2! is the best move, and that is backed up by crafty, TCB, and HIARCS. >>>>Anyway I dont see the problem with Rf2!. >>> >>>Rf2 is not the best move of Crafty18.1 >>>It prefers Rxb3 with evaluation of 0.00 at depth 15 >>> >>>After Rf2 Crafty can see a clear advantage for white (1.54 pawns at depth 13 and >>>1.68 at depth 14) >>>The problem is that tiger does not know that rook and a bishop with no pawns >>>usually cannot win. >>> >>>It is a known problem of tiger and it is not news. >> >> >>I was using crafty 15.14 for that analysis. >> >> -Alex >>> >>>Uri > >And I wonder what version of Hiarcs you are using, because my copy of Hiarcs >7.32 (using all 5-pice-and-less tablebases) selects Rxb3 from a depth of 1 >(+0.88 score) all the way through 14 (+0.68 score). > >It doesn't see black winning, but the score is heading in that direction and he >does see the first move. It didn't report any tablebase hits until a depth of >10, so they didn't help at depth 1. Fritz 6 generally agrees with this, not >getting a tablebase hit until depth=11. I was using a version of HIARCS that I hacked into and tweaked so it isnt up to its full streangth. -Alex
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.