( 984)

(Referenced by 301)

If we want to generate a larger eye for White, we have to take the / stones of the board, and shift the / stones one point left / down.

In the resulting diagram, we can see that White has six liberties now (3 * w, 3 * c), one more than "usual". This must benefit White.

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It will not help Black to use a ko-threat in an attempt to avoid connecting the hanezeki's tail.

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reduces Black's group below the Punishment Semeai Liberty Level, so is forced.

:
After White's oki with , White's centre group still has six liberties (3 * w, 3 * c), and will win the semeai with Black's connected group on the lower edge, which has five liberties (4 * t, a) only.

White wins unconditionally, so Black must not allow White getting a larger eye.