Thanks to all who replied. I particularly liked David's and Gunnar's clear examples of why the enemy's exact key point is not always exactly "my own".
My foe's monkey jump is almost always better-prevented by my simple descent; the right distance for an extension differs for me and my foe; and so on. Gunnar's example contains an interesting symmetry: If it's Black (X) to play, the 1-1 point is the worst for Black, but best for White. If it's White to play, the 2-2 point is worst for White, but best for Black. So from _both_ players' points-of-view, it serves as an excellent counter-example to that old saw, "the enemy's key point is my own". On Tue, Oct 28, 2008 at 3:08 PM, Gunnar Farnebäck <[EMAIL PROTECTED]> wrote: > An extreme case is this life and death problem where playing the > opponent's key point is the worst you can do locally. > > |OOOOO. > |XXXXO. > |.O.XOO > |.XOX.O > +------ -- "The region in which the enemy's key point lies may also contain a key point for me, nearby, which neutralizes the effect of the enemy's key point, if I play my key point first." Nah, just doesn't have the same ring to it. _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/