GokyoShumyoSection4Problem20/Attempts

[Diagram]

Attempt 1 (failure)

After B4, White's group has four liberties to Black's five.


[Diagram]

Attempt 2 (failure)


[Diagram]

Attempt 3?

After W3, Black cannot play at a due to a shortage of liberties. After W7, White is ahead by one liberty.

[Diagram]

another Attempt

Black and White have the same number of libetrys now. But Black cannot play the atari in the end, because a shortage of libertys.


The technique of B1 is used in a variation of the large avalanche joseki, demonstrating why white shouldn't play this way because of the remaining aji:

[Diagram]


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