Author: Peter McKenzie
Date: 15:44:11 08/20/99
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I've had the sort of bug you describe on a number of occasions, sometimes its hashing related but sometimes it isn't. Sometimes it is the result of a data structure becoming corrupted due to a particular series of events that have occured in the game. There are a number of things you can try: - replay the moves from the game, and try the search after that. - try getting the program to search the previous few positions that it would have searched in the game, then search the problem position. - output more information to your log file so that you will understand the problem better next time. - check that your total node counts are the same when running a test suite to a fixed depth twice in a row (without restarting the program). Hope this helps. Peter
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