[FOM] Checkers is a draw

Timothy Y. Chow tchow at alum.mit.edu
Fri Jul 20 11:33:19 EDT 2007

Jonathan Schaeffer and his collaborators have announced that their program 
Chinook has verified that checkers is a draw.  Their Science magazine 
article is available online to subscribers at:


The results of the computation have been placed online at:


Note that perfect play from an *arbitrary* given position (as opposed to 
the standard initial position) has been computed only for positions with 8 
or fewer units.  If work on checkers continues, then it seems plausible to 
me that we might see the day when Chinook plays perfectly from *any* given 
position.  If that happens, I suspect Chinook will play by computing on 
the fly rather than by querying a stored database, for the reasons I've 
given in recent FOM messages.


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