Re: computer-go: Go4++: Passing in tsume searches.

[Daniel Bump <bump@xxxxxxxxxxxxxxxxxx>]

Jean-Pierre Vesinet wrote:

> There _may_ be some sort of unstable seki. A move played by the attacker
> would force the defender to answer. This move would then force a move by the
> attacker to keep the position a seki. Then the defender passes again. If the
> defender's position still has some weakness, the attacker can force a
> defensive move again. This is difficult to construct. Maybe the rules
> experts could help on the go rules mailing list?

The following position seems to meet this description.

O O O O O O X X X X X
O X X X X X O O O O X
O X . X . O . O . O X
---------------------

O can play atari on the first line after which X captures
and O takes back. Infinite ko threats for O. However the
position is seki.

Daniel Bump