Gokyo Shumyo, Section 1, Problem 78 / Solution
We try it out at Gokyo Shumyo, Section 1, Problem 78 / Attempts.
The solution is copied over from Gokyo Shumyo, Section 1, Problem 78 / Attempts, with minor corrections.
Main line: Hashimoto Utaro
Variations: unkx80, Dieter
White 11 at a and Black 12 can't play at b because White captures three in a row, assuring a second eye.
The next tesuji is White 3, sacrificing yet another stone.
If White fires off the usual sequence first only to play the former tesuji at 7, she falls short as a is now suicide.