Author: James T. Walker
Date: 12:53:44 12/21/99
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On December 21, 1999 at 09:11:08, James T. Walker wrote: >On December 20, 1999 at 23:46:37, blass uri wrote: > >>On December 20, 1999 at 21:48:29, Len Eisner wrote: >><snipped> >>>In any case, the position I mentioned should be covered by the KPP vs KP 5 >piece tablebase which I do have loaded. So I don't know why Fritz 6 (and >H7.32 for that matter) plays f7 since it is obviously not the fastest winning >line. >> >>f7 is the fastest winning line that fritz6 and hiarcs7.32 know by tablebases >>of H732. >> >>They know nothing about kqp vs kp so the fact that there is a faster winning >>line(leading to KQP vs KP) is not relevant >> >> >>Uri > >Hello Uri, >I believe you are right. He should have the KQPKP tablebase to make this >endgame work properly. It may even be counter productive to have any "Pawn" >tablebases without the proper "Promotion" tablebases to follow up. For the >KPPKP tablebase you should have the KQPKP and KPPKQ at the very minimum. These >endings are usually easy wins for the side with the Queen but that does not mean >that they are not required for the programs to transition into them correctly >from the KPPKP ending. >Jim Walker Hello again, I have just discovered a problem with using Fritz 6 in the Fritz 5.32 GUI. It seems to have similiar problems to Fritz 5.32 when using the tablebases. Today it was playing shredder 3 and found a mate in 45 (KQPKQ tablebase). Around move 20 it got lost and repeated the position 3 times. I do have the KQQKQ tablebase and Hiarcs performs these endgames correctly. The problem does not seem to exist in the Fritz 6 GUI but I have been using the Fritz 5.32 GUI because of another bug in the Fritz 6 GUI. The bug is Fritz 6 stops playing sometimes in the endgame for no reason. If you have played any engine/engine games look at your database of these games. The ones where Fritz stopped playing will show a +- in the score instead of 1-0 indicating that white was ahead when it quit. (Or = when it was drawish instead of .5-.5). Jim Walker
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