Here is a nice problem that could occur in part of a real bigger game !?
Black(X) to win in 31 moves (unique):
+---+---+---+7| x | x | x | +---+---+---+6| x | x | | +---+---+---+5| x | x | | +---+---+---+4| o | | o | +---+---+---+3| | | o | +---+---+---+2| o | o | | +---+---+---+1| o | o | o | +---+---+---+ A B C
