Tsume Othello #5667615 (empty 12)

To move: Black — find the best move

a

b

c

d

e

f

g

h

1

2

3

4

5

6

7

8

27 25

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📖 Related reading

Othello Midgame Strategy: Frontier Discs, Internal Moves, and MobilityOthello isn't decided only by corners and the endgame — the midgame in between matters too. How to keep your own mobility by minimizing frontier discs: internal moves (nakawari) and open-degree.