Author: Uri Blass
Date: 02:09:17 09/23/03
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On September 23, 2003 at 01:56:08, Kurt Utzinger wrote: >On September 23, 2003 at 01:43:02, Kurt Utzinger wrote: > >>On September 22, 2003 at 13:35:56, Pete Waring wrote: >> >>I was comparing the results from a few engines for analysis purposes (trying to >>decide what engines I like to help with blunder checking), and got some strange >>answers for the following position: >> >>[D]r1bqr1k1/p4p1p/2p1n1p1/3p4/1B3Q2/P2B4/5PPP/2R3K1 w - - 0 1 >> >>Some engines, such as Fritz 6, Ruffian 1.0.1, and Little Goliath 3.6, show the >>position as being equalized after Qf3, while others, like Shredder 6.02, Crafty >>19.03 and Yace Paderborn show black as clearly winning after Qf3. Two examples: >> >>Analysis by Fritz 6: >> >>1. = (0.00): 29.Qf3 >>2. -+ (-6.31): 29.Qe5 c5 30.Bc3 Nd4 31.Qg3 Nf5 32.Qf4 c4 33.Bxf5 Bxf5 >>3. -+ (-6.34): 29.Qd2 a5 30.Bc3 d4 31.Bb2 c5 32.Bc4 Rb8 33.Re1 Qf6 >>4. -+ (-6.50): 29.Qe3 a5 30.Bd2 c5 31.Qg3 Ba6 32.Bxa6 Rxa6 33.Qg4 Qd6 > > > Strange indeed. My Fritz6c never shows 29.Qf3 with > an evaluation of 0.00 Of course they did not show it because they did not have all the game so they could not know that 29.Qf3 leads to repetition of a previous position. Uri
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