It is funny, but isn't it the "correct" play by X? If X doesn't double, he is certain to lose the match. If X doubles and O passes (not a likely response!) then X survives. So the "correct" play by X is to double, which O accepts. Now X has no way to avoid losing the match, so X resigns. I guess the magnitude of the loss doesn't matter to X.
----- Original Message ----- From: "Massimiliano Maini" <[email protected]> To: [email protected] Sent: Friday, April 10, 2009 10:55:45 AM GMT -05:00 US/Canada Eastern Subject: [Bug-gnubg] Funny quirck Hi all, enter this position: 2jbQIBjzAAAAAA:EQH7AEAAEAAA GNU Backgammon Position ID: 2jbQIBjzAAAAAA Match ID : EQH7AEAAEAAA +-1--2--3--4--5--6-------7--8--9-10-11-12-+ O: gnubg OO | O X O | | X X | 4 points OO | O X O | | X | Rolled 66 OO | O | | | OO | O | | | O | | | | | |BAR| |^ 7 point match | | | | | | | | | | | | | X X X X | | | | X X X X X | | X | 2 points +24-23-22-21-20-19------18-17-16-15-14-13-+ X: MaX (Cube: 2) O takes 4 out and the position is gin given the cube and the score. If you make gnubg play against himself, X will redouble to 4 (optional redouble), O will take and then X will resign. Very funny :) :) MaX. _______________________________________________ Bug-gnubg mailing list [email protected] http://lists.gnu.org/mailman/listinfo/bug-gnubg
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