About Ko in a Semeai Between
Two One-Eyed Groups (2012)
White's Group on the Left Edge
The marked White group on the left edge in the original problem is unlikely to be killable by Black, but provides a good source for Black ko-threats. White must take all steps to avoid being forced to capture Black's centre group, simply because her group on the left side is in danger, unless she is able to capture Black's group in the upper right thereafter. | |