Author: Robert Hyatt
Date: 22:42:13 11/27/03
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On November 28, 2003 at 01:21:16, Russell Reagan wrote: >I had this position in a game I played tonight. Analyzing it, I found that I >missed a draw. Ruffian took 9 seconds and 14 plies, while Crafty took 4 minutes >and 22 plies to see that it was a draw (Athlon 2GHz). Ruffian gives a draw score >after two repititions, so this might be why. I'm not sure what Crafty does. > >[D]8/8/8/1p6/8/8/pq3P2/3k2KQ w - - 0 76 > >While we're on the subject, what do you programmers think is the best approach >for repetition detection? Giving a draw score after two repetitions or waiting >until three? Or are there advantages to both approaches? First question, does ruffian find the draw quickly if you set up the position with FEN as opposed to entering the complete game history? If so I have no idea what is happening... I tried it here and crafty only takes a few seconds to see the draw... do you have a position.bin file? Delete it and try again.
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