Tsume Othello #5622104 (empty 10)
To move: Black — find the best move
a
b
c
d
e
f
g
h
1
2
3
4
5
6
7
8
29 25
Why this move works
The answer is h7. Even best play ends 12 behind, but h7 keeps the most discs for you (2 better than the next-best).
a6 flips 5 right now, but it is not best. Even when losing, read the final count and minimize the loss.