Nick Wedd wrote:
In one of the British Championship Match games, a bit over ten years ago, Zhang Shutai made an illegal ko move against Matthew Macfadyen, and immediately conceded that he had lost the game.
Is the game record available? I am interested because I have only found 2 situations in real games: a. Triple ko b. Double ko when the group sharing the kos has nothing better than life in seki. Both have cycles smaller than 8 ply and my software doesn't check longer cycles. I guess any human player would recognize these situations. So if a strong player didn't it must be something more complicated. Jacques. _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/