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III

Plate 35 (C)
The following stones are on the board: White, B 16, C 14,
E 15; Black, C 17, D 16, E 16, G 17.

If White has the move, it makes a difference of seven “Me."

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· Plate 35 (D) The following stones are on the board: White, B 8, C7, C8, D 6, E 2, E 6, F 3, F 5; Black, B 6, B 7, C6, D 2, 3, 4, 5.

If White has the move, it makes a difference of four “Me.”

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WHITE

5. A 8.

BLACK 6. C 4. Necessary because the connection at C 5 is now in immediate danger, but Black thereby fills up another of his “Me,” and White retains the “Sente.”

Plate 36 (A)

The following stones are on the board: White, M 16, M 17, M 18, N 16, 0) 15, P 14, R 14; Black, N 17, N 18, O 16, P 16, Q 16, R 16.

If White has the “Sente,” it makes a difference of six “Me.”

WHITE

1. N 19.

BLACK 2. O 18. Black cannot stop the invasion at O 19, as White would then play at 0 18 and kill the black stones on line N.

4. P 19. Black can now arrest the advance.

6. P 18.

3. O 19. White pushes his invasion farther.

5. M 19.

White retains the “Sente.

VI

Plate 36 (B) The following stones are on the board: Black, M 2, M 3, N 3, N 4, 04, Q 4, R 4, S 4; White, L 3, N 2, O 2, O 3, P 3, R 2, S 3, R 6.

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Black has the “Sente” and gains nine "Me.”

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WHITE 2. Q 2. The obvious answer is at T 2, but if White plays there, Black replies at Q 2 and White loses all his stones unless he can win by “Ko.” He plays at Q2 in order to form the necessary two “Me.”

4. P1. If White tries to save his stone by playing at R 3, Black replies at P1, and the white group is dead.

3. S 2. Black proceeds with his invasion.

Black retains the “Sente.”

VII

Plate 36 (C) The following stones are on the board: Black, B 17, C 17, D 16, G 17; White, B 16, C 13.

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Black has given up the “Sente,” but has gained considerable ground.

VIII

Plate 36 (D) The following stones are on the board: Black, C4, D 4, E 4, C 7; White, C3, D3, E3, F 3.

Black has the move.

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These moves seem obvious, but the importance of Black's opportunity is likely to be underestimated; Black gains about eleven “Me” by this play. If the opposing lines extend one space nearer the edge of the board, the territory gained by a similar attack is not nearly so great.

IX

Plate 37 (A) The following stones are on the board: White, M 16, N 10, N 18, O 17, P 18, Q 17, 18; Black, N 15, O 15, 16, P 16, 17, Q 16, R 12, R 17.

White has the move.

WHITE

BLACK

1. S 17. 3. R 18. 5. T 18.

2. S 16. 4. R 16.

White has given up the “Sente,” but these moves make a difference in his favor of about fourteen “Me.”

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