Author: Ricardo Gibert
Date: 07:54:04 09/22/99
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Ok, so some programs do not examine underpromotions, since it seems to be a net gain on average. I can understand why some would not like that, so I have a simple compromise. Good underpromotions tend to occur in one of 2 cases: 1) Greatly reduced material. Both players have only zero or one pieces on the board (I'm not counting Ks or Ps here of course). 2) Promotion to an N is with check. So the compromise would be to test for the above 2 cases to determine whether an underpromotion should be examined. This should be more economical than examining each of the underpromotions. The chance of overlooking a good underpromotion should be nil. Reasonable?
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