Sorry, I cannot waive the course prerequisites. ------------------------------------------------------------------------ --- Keh-Hsun Chen (Ken), Ph.D. Professor and Associate Chair of Computer Science UNC Charlotte | Dept. of Computer Science 9201 University City Blvd. | Charlotte, NC 28223 Phone: 704-687-8545 | Fax: 704-687-3516 c...@uncc.edu | www.cci.uncc.edu/cs/site/ ------------------------------------------------------------------------ --- If you are not the intended recipient of this transmission or a person responsible for delivering it to the intended recipient, any disclosure, copying, distribution, or other use of any of the information in this transmission is strictly prohibited. If you have received this transmission in error, please notify me immediately by reply e-mail or by telephone at 704-687-8545. Thank you.
-----Original Message----- From: computer-go-boun...@computer-go.org [mailto:computer-go-boun...@computer-go.org] On Behalf Of Brian Sheppard Sent: Tuesday, August 18, 2009 4:25 PM To: computer-go@computer-go.org Subject: [computer-go] Mercy rule position 1 2 3 4 5 6 7 8 9 A - X - O - - O - - B - - O - O O - O O C O O O X O - O O X D X X O O O - O X X E - X X O X O O X - F X - X X X X X X - G X X O O O O O X X H X O O X X O O O X J - O - X X - O O O O to play and win :-) The "play and win" is a joke, of course. O has a big, dead, one-eye group at bottom. But Pebbles simulations was winning this position at over 84% for O, no matter how long it searched. When I investigated, it turns out to be because of the "mercy rule." I had set the threshold at 25% of the board, or 20 stones difference between the sides. Here is a position: 1 2 3 4 5 6 7 8 9 A O - O O O - O - O B O O O O O O - O O C O O O - O - O O X D X X O O O X O X X E - X X O X O O X X F X - X X X X X X - G X X O O O O O X X H X O O O O O O O X J O O - X - O O O O O "wins" by mercy rule, 45 stones to 24 I can move the threshold, of course, and that "fixes" the problem. But I am wondering if there is a more reliable approach. What do you do in your program? _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/ _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
