British Go Journal No. 54.  October 1981. Page 26.
The problems to all these solutions are to be found on pages 19 and 20 .
Solution 1 |
White plays 1 and 3. Black can make a seki but in gote.
Solution 2 |
Black can force a ko.
Solution 3 |
Black 1 gains two liberties in effect, since White cannot play on either side after black 5.
Solution 4 |
White 1 is a famous tesuji and Black cannot save his cutting stones.
Solution 5 |
White sacrifices a stone at 1, and now Black has no way to get more than two liberties.
Solution 6 |
Black 1 and 3 may not look much good, but 5 is a tesuji, and however White answers, Black can make two eyes.
Solution 7 |
Black 1 and 3 are the only way, then White throws in at 4, and the best result for both is a ko.
Solution 8 |
Black 11 at
Black 1 is the only play which works, and white 2 is the most resilient reply. The extra black stone on the outside is necessary to stop White cutting at 'A' after black 13.