Gokyo Shumyo, Section 1, Problem 93 / Attempts

[Diagram]

White to live

W1 looks so tesuijiish that it must be the start of the solution...and if B2, White has quickly captured the cutting stones.

[Diagram]

White lives

B4 on W1.


There is still work to do for this diagram, however:

[Diagram]

White to live


--dnerra


exswooWouldn't this work?

[Diagram]

Assuming B can't let W connect out...

[Diagram]

Ko for life?

[Diagram]

Ko for life?

This variation allows no ko. But you're on the right track. Dieter

[Diagram]

Even simpler

Even simpler.


exswooAh. I didn't see that one. How about this then?

[Diagram]

White to live

[Diagram]

Captured?

[Diagram]

Nah...

unkx80: B6 here, and eyes win semeais.


(Below is moved from old versions of the solution page)

[Diagram]

Proposed solution

After W7, Black suffers from shortage of liberties whatever he does. We will discuss variations as questions arise. --Dieter


[Diagram]

Variation at 6

Myself I see no way for White to avoid ko if B6 in the previous diagram is played at B1 here. --Dieter

xela: Yes, this is the solution given in World Weiqi Masterpieces of Life and Death (without the exchange of W2 for B3).


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