Author: Daniel Clausen
Date: 09:40:54 01/24/02
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Hi 'perft' is a command in Crafty (and other engines) which makes the engine count all valid positions to a specified depth. No score or best line is calculated, just the full game tree is spawned and counted. eg. for the initial position (20 positions for ply=1, 400 for ply=2, etc) You can use this for: (a) test your movegen/domove/undomove (b) compare speed of your movegen/domove/undomove with other engines I've tested the move generator of my engine with the initial position (6 plies deep) and the oh so famous kiwipete-position (5 plies) For the kiwipete-position, finger kiwipete in ICC. [position and #positions for 1..5 plies are in his finger-notes] HTH Sargon
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