15. White, N 17, O 18, P 16, 17, Q 15, R 15, S 16.
Black, P 18, Q 16, 17, S 17.

16. White, R 2, 4, S 3.
Black, O 3, P 4, Q 2, 4, R 5, 6, S 4.

[[Contents]]

IV. Reciprocal Attacks (“Semeai”)

1. ([Plate 43], A) White, N 17, P 17, Q 17, R 17, S 18.
Black, Q 18, R 14, 16, 18, S 16, 17.

2. ([Plate 43], B) White, O 3, P 2, Q 2, R 3, S 3, 5.
Black, Q 3, 4, R 2, 6, S 2, 7.

3. ([Plate 43], C) White, B 15, 16, C 15, 17, 18, D 17, E 18.
Black, B 17, C 16, D 16, 18, E 16, 17, F 18.

4. ([Plate 43], D) White, B 2, 3, 4, C 5, D 3, 4, 6, F 3, G 2, 3.
Black, B 5, 6, C 2, 3, 4, 7, D 2, E 2, F 2.

5. White, B 3, C 2, 3, 4, D 4, E 3, F 3, G 2, 3.
Black, A 3, 5, B 4, 6, C 5, D 2, 3, 5, E 2, 4, 5, F 2.

6. White, B 14, 15, 16, 19, C 15, 17, 18, D 18, E 17, F 17.
Black, B 13, 17, 18, C 13, 14, 16, D 15, 16, 17, E 14.