Author: Eric Oldre
Date: 13:55:07 07/21/04
lets say you are searching a position with iterative deepening. at depths 3,4,5 it finds a best move of Qd3. then at depth 6 the best move changes to c4. When you start searching to depth 7, you clearly would want the first move you search to be c4, and this shouldn't be a problem if your transposition tables are working right. Since the best move should be stored in it. however, a good move to try 2nd would be Qd3, but your transposition tables aren't going to let you know that, at least not in the implementations that I have normally heard about. I was thinking that one way to overcome this would be to keep 2 "best" moves in the trans table. one to try first, and one that was a best move, before being replaced by a deeper search. Are other people doing this? or have you discovered that the cost is greater than the benefit? Eric
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