British Go Journal No. 20. July 1973. Page 12a.
The problem for this answer is on page 11a.
Solution 1 (1-85) |
Answer: Yes. The answer should be played through to verify it. After black 3 it is oviously a shicho but when 19 is reached the ladder turns through 90 degrees! With 67 and 69 the ladder commences to turn back on itself and ends up back where it started.
Solution 2 (101-159) |
BGJ did not have this diagram.
When Black plays 159, white is in damezumari. All the stones on the board, except the five white stones in the middle are essential.
This beautiful problem is one of several classical positions which illustrate various tesuji on a huge scale.