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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."

White Black

1. B 17. White dare not go to 2. B 18. B 18 because he would be cut off eventually at B 15.

3. A 18. 4. C 18.

White retains the "Sente."

IV

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

3, 4, 5.

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

Wh1te

1. B 4. This stone is sacrificed, but there is no loss because it is so threatening that Black must play twice in order to make his position secure, meanwhile White advances on line A.

3. A 7. White gains one "Me" by this move.

Black

2. B 3. Black's best move because it defends the connection at C 5, and also prevents White from trying to connect at D 1.

4. A 6.

Wh1te Black

6. A 8. G. C4. 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 "Sentc."

V

Plate 36 (A)

The following stones are on the board: White, M 16, M 17, M 18, N 16, O 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."

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VI

Plate 36 (5)

The following stones are on the board: Black, M 2, M 3, N 3, N 4, O 4, Q 4, R 4, S 4; White, L 3, N 2, O 2, 03, P3, R2, S3, R6.

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

Black Wh1te

1. T 3. 2. Q2. The obvious answer is

at T 2, but if White plays there, Black replies at Qz and White loses all his stones unless he can win by "Ko." He plays at Q.2 in order to form the necessary two "Me."

3. S 2. Black proceeds with his 4. P1. If White tries to save invasion. his stone by playing at R 3, Black

replies at P1, and the white group

is dead.

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.

Black Wh1te

1. B 14. This move is really 2. C 14. C 15 is not so good. "Go te"; that is to say, White is not forced to reply to it, but it is very advantageous for Black, as it effectively separates White's two stones.

3. B 15. The white stone at B 16 is now hopeless.

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

VIII

Plate 36 (D)

The following stones are on the board: Black, C 4, D4, E4.C7;White,C3.D3, E 3, F 3. Black has the move.

Black White 1. B3. 2. B2.

3. B4.

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 16, N 18, 0 17, P 18, Q 17, 18; Black, N 15, 0 15, 16, P 16, 17, Q 16, R 12, R 17.

White has the move.

White Black 1. S 17. 2. S 16.

3. R 18. 4. R 16.

6. T 18.

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

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