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

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.

4. C 18.

3. A 7. White gains one "Me"

IV

Plate 35 (D)

The following stones are on the board: White, B 8, C7, C8, D6, E 2, E 6, F 3, F 5; Black, B 6, B 7, C 6, D 2,

BLACK

3, 4, 5.

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

4. A 6.

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.

5. A 8.

WHITE

1. N 19.

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."

WHITE

3. O 19. White pushes his invasion farther.

5. M 19.

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."

White retains the "Sente."

BLACK

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

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

6. P 18.

VI
Plate 36 (B)

The following stones are on the board: Black, M 2, M 3, N 3, N 4, O 4, Q4, R 4, S 4; White, L 3, N 2, O 2, O 3, P 3, R 2, S3, R 6.

3

12

19

A B C D E F G H J K L M N O P Q R S T (513) 4 26

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

3

2

(2)

+20 3

1

4

A B C D E F G H J K L M N O P Q R S T

C

D

B

19

18

17

16

15

14.

13

12

11

10

9

8

7

6

5

4

2

1

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

BLACK

WHITE

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

1. T 3.

3. S 2. Black proceeds with his invasion.

Black retains the "Sente."

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

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

1. B 14. This move is really "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.

WHITE

2. C14. C15 is not so good.

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

1. B 3.

3. B 4.

VIII

Plate 36 (D)

The following stones are on the board: Black, C4, D 4, E 4, C 7; White, C 3, D 3, E 3, F 3.

Black has the move.

BLACK

1. S 17. 3. R 18.

5. T 18.

2. B 2.

WHITE

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.

WHITE

IX

Plate 37 (A)

The following stones are on the board: White, M 16, N 16, 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.

2. S 16.

4. R 16.

BLACK

White has given up the "Sente," but these moves make

a difference in his favor of about fourteen "Me."