# GokyoShumyoSection1Problem103/Attempts

Gokyo Shumyo, Section 1, Problem 103

Whati if W E19?

Gokyo Shumyo, Section 1, Problem 103

pwaldron: Then it looks like black is fine. If White throws in at instead, black connects at .

Gokyo Shumyo, Section 1, Problem 103

pwaldron: The best I have found so far is this. ( connects)

Gokyo Shumyo, Section 1, Problem 103

pwaldron: Now white must fight a ko in the corner in order to capture the two crucial stones.

Throw-in then clamp.
Now, because W can cut at the marked point, B does not have enough liberties to kill W's stones before W kills the cutting stones.

xela: black 'a' next makes a ko?

If B just descends, W descends too, then sacrifices two stones to make a dead eye shape.
Now W can cut and kill the whole corner in a simple liberty race.
If black plays the hane, he is unable to cut after white descends.

unkx80: Very interesting! But...

Throw-in then clamp.

I think kills.

Throw-in then clamp.

With , Black group is alive with two eyes.

Throw-in then clamp.

And then White dies from the straight three dead shape.

bucko: Perhaps this is simply a problem of move ordering. It is rather simpler, but less obvious(?), but perhaps W can just descend:

Similar to before, but less B can do: Clearly B must now cut, so the sequence goes like so.
And we are back to the variation that worked. :)

a and b are miai.

GokyoShumyoSection1Problem103/Attempts last edited by xela on February 2, 2007 - 03:46
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