Author: Robert Hyatt
Date: 17:05:23 10/10/03
Go up one level in this thread
On October 09, 2003 at 12:58:51, Russell Reagan wrote: >On October 09, 2003 at 09:34:00, Robert Hyatt wrote: > >>1. Is this pawn passed? bitboard == 1 AND. >> >>2. Is this pawn backward? same >> >>3. Can king stop pawn from promoting? Same >> >>4. Is file open? same >> >>5. Is file half-open? same >> >>6. is diagonal open? same >> >>7. is square weak (can never be defended by pawn again)? same > >But which of these cannot be added to the pawn hash table and be found quickly >in any board representation? Different question. But if any of the above depend on a piece, then you can't hash it. Pawns in front of king for example, depend on where the king is. Weak pawns are weaker if they can be attacked, less weak if there is no piece that can attack them. Etc.
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