Author: Dann Corbit
Date: 11:55:50 08/04/99
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On August 04, 1999 at 14:09:18, Bruce Moreland wrote: >On August 04, 1999 at 12:16:52, Dann Corbit wrote: > >>As a 'for instance': >> >>Suppose that on promotion, a program sees that it can promote to a knight >>instead of a queen, and get a king fork, taking a bishop, followed by a queen >>fork, taking the other bishop. In such a case, it might evaluate: >> -pawn+knight+bishop+bishop+two_bishop_bonus+(minor positional goo) >>verses >> -pawn+queen >>and get something a fraction more valuable than a queen. But down the road I >>would rather have the queen than a knight and remove the two bishops. >> >>How do programs deal with this? > >You are really saying you'd rather have a queen against two bishops than be a >knight up, right? Yes. Especially since it is so much easier to mate with a queen than a knight [depending upon what else is on the board of course]. ;-) Even in the general case that is almost always my preference. But I think pretty much a chess program is just going to do a quick eval and not look 25 moves ahead where the queen would start to pay dividends.
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