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Subject: A question about underpromotion danger

Author: Dann Corbit

Date: 09:16:52 08/04/99

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?

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