On Dec 13, 2007 12:17 PM, Jacques Basaldúa <[EMAIL PROTECTED]> wrote: > 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.
It doesn't have to be. It can simply be so that he recaptured the ko directly. I remember (but can't find it) that it was relatively recently that a japanese 9 dan pro did the same mistake. regards, Vlad _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
