There is a seki in the lower left of the position below: 1 2 3 4 5 6 7 8 9 A - O X X - X - - - B X O X X X X X - X C - O O X X - X X - D O O O O X X X X X E X X O - O X - X O F - X X O O O X X O G O X X X O X X O - H O O X X O X O - O J - X - X O O O O -
It is obvious that X cannot play F1. O cannot play F1 because that would sacrifice a "straight four". Pebbles has followed Magnus's advice and added a rule that prevents the "two-for-one" trade that would occur when X plays J1, so that is also not a problem. And for O, playing J1 is ruled out because X has another eye on J3. What isn't obvious is that X cannot play J3. If X plays J3 then O follows with J1 atari, and X loses because of the nakade shape of O's stones. The bottom line is that Pebbles rates this position as hugely favorable for O, because X stumbles into J3 in the playouts. How does your program handle this situation? _______________________________________________ computer-go mailing list [email protected] http://www.computer-go.org/mailman/listinfo/computer-go/
