Author: Robert Hyatt
Date: 09:52:46 09/30/99
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On September 30, 1999 at 09:52:37, Helmut Conrady wrote: > > >I think I´ve found a little Tablebase-Bug in Crafty 16.15. Look at this >position for example: > >wKe5, e2, d2; bKa8, d5. > >After Kd5: there is a postion with PP vs P on >the board and (with installesd tablebases!) I expected Crafty to show a >mate in several moves. But he >is calculating and calculting and shows after minutes something about >+10. > >After Kd5: he announces a correct mate. This phenomenon took place when >there is a pawn at the row next to the black pawn (Example: black f-pawn >with >white e or/and g-pawn) and the white pawn is at its beginning field. >When >you move this white pawn one or two squares above Crafty has no problem >with showing the mate. > >Is it a problem of Crafty of 16.15 or a problem belonging to Craftys >running under the Fritz GUI? > >Best wishes > >Helmut I don't understand what you are asking. Are you using "analysis mode"? If so, it _must_ search from the current position before it can get a tablebase hit. And Kxd5 will definitely produce a mate in 14 score if you ask it to search from the position you posted... I don't see how you would get a score for the position _prior_ to playing Kd5, since it is white's move, and it has to search some move before it can probe the databases...
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