British Go Journal No. 66.  November 1985. Page 31a.
The problem for this solution is on page 31 of BGJ 65 .
Diagram 1 ||
Diagram 2 |
The symmetry of white 1 should have helped readers find this move. White 1 in Dia 1 prevents black 1 in Dia 2, which forces white to reduce his eyespace with 2. After black 3 white can no longer make living eye shape.
Diagram 3 |
If black still tries to kill white, with EG 1 in Dia 3, white 2
lives easily because of the extra internal liberty. Note, however, that
white cannot play at A in reply to black 1. Black blocks at 2 and can
make the dead "rabbity-six" shape - (see the "Life &
Death" Elementary Go Series book).
[White has life in seki.]