Author: Howard Exner
Date: 00:28:05 12/29/00
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On December 29, 2000 at 02:43:53, Uri Blass wrote: >On December 28, 2000 at 21:45:46, Robert Hyatt wrote: > >>On December 28, 2000 at 18:40:30, Howard Exner wrote: >> >>>On December 27, 2000 at 22:28:57, Robert Hyatt wrote: >>> >>>>Strange. I tried this and I _never_ get Nxf3 at all. I get h3 at early >>>>plies, then Kf6, until it changes to Kf5 for good... Interesting problem >>>>of course. And I have seen this happen to both crafty and its opponents >>>>from time to time... >>> >>>Even though there are 8 pieces on the board it looks like the table base >>>endings come into play. Vincent's program discovers a mate in 30 or something. >>>Century 3 plays Kf5 at 8:42 on an Athlon 900. >>> >>>Most likely all programs will eventually incorporate the endgame table bases. >>>Otherwise good and solid middlegame play may not be rewarded on those occasions >>>were endgame bases detect the outcome of a game long before it's non-base >>>counterpart. >> >> >>I ran this on a machine with no tablebases of any kind... >> >>Crafty never considers Nxf3... > > >It is clear that it is because of some change in the evaluation because >Crafty15.19 does considers Nf3 as best in the first 10 plies I'm curious what Crafty plays after the moves Kf5 Ra4. Must still avoid Nxf3 and play Rxf3 instead.
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