# GokyoShumyoSection1Problem100/Solution

Common line - forced moves

- is forced. It's easy to verify that allowing White to play at makes life. Next, is tesuji, making miai of a and b.

# The corner tesuji

Life

wedges and then is a splendid move. Whatever Black does, will do the trick. If Black plays the shape point , then is atari and next White lives at a. If Black responds to at , then White can play and make two eyes at b or c.

# The center sequence

Life

If defends on the left, then after , Black has a problem. White can play at a to get an eye at b or capture black, or at c to capture either black or black . See next diagram

Continuation

After white threatens a capture on the left and a ladder on the right.

# Variations

Variation 1
Variation 1 (ctd)
Variation 2
Variation 3

Black gets caught in net. ignoring 5 does not lead to ko as white will force eye at 'a'

Variation 4

GokyoShumyoSection1Problem100/Solution last edited by hnishy on February 16, 2023 - 23:47
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