When is fighting this ko is favourable? It is quite large[1] as both opponents can end the fight by capturing another stone.
Black has 5 points + 2 captured stones. White has 6 points + 1 captured stone. The score is 0.
White has two plays elsewhere as compensation.
Black has 1 point. White 9+2. The score is -10.
Black has a move as the compensation.
[1] Bill: After the ko is indeed large. Typically,
is not good. But when Black is komaster he can pick up 2/3 of a point in two net plays by the following sequence:
-
= ko threat and response,
takes ko.
After Black wins the corner ko.
If White plays first she gains 1/3 of a point with .
Thanks, Bill. So, the value of this position is not large. This settles it. I can now proceed to the next typical position.