Author: Chris Hull
Date: 11:48:05 03/17/01
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On March 17, 2001 at 13:38:31, Uri Blass wrote: >On March 17, 2001 at 13:04:29, Antonio Senatore wrote: > >>It seems incredible that a top chess program like Junior 6 (without the KPPKB >>tablebase but with the KBK and the KBKP tables) CAN'T SEE MATE IN ONE in the >>next position: >> >>7k/4pK1p/7B/8/8/8/8/8 w - - > >It is not a bug >It is a design decision by the programmer. A bad design decision is even worse than a bug. A bad design is almost always much harder to correct than a bug in the program. >Junior knows that king bishop with not more material cannot mate and the same >for king knight with no more material. > >It practically help Junior in games because Junior simply does not have to >search in KB vs KPP positions unless it evaluates the position as advantage for >the side with the pawns. > >I believe that you can change the default parameters if you prefer a weaker >program that can see the mates in the position that you posted. > >Experience tells that they never or almost never happen in games so the >programmer(Amir Ban) did not care about them. > >Uri Chris
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