GokyoShumyoSection1Problem103/Attempts
![[Diagram]](../../diagrams/9/3d0f9ab2c4070897158b511e8474b38e.png)
Gokyo Shumyo, Section 1, Problem 103
Whati if W E19?
![[Diagram]](../../diagrams/4/55c5c7845c879c83322c12e3c8ebd2fe.png)
Gokyo Shumyo, Section 1, Problem 103
pwaldron: Then it looks like black is fine. If White throws in at
instead, black connects at
.
![[Diagram]](../../diagrams/2/1c25b4516e66123d6b2bc02558211515.png)
Gokyo Shumyo, Section 1, Problem 103
pwaldron: The best I have found so far is this. (
connects)
![[Diagram]](../../diagrams/34/7bda8e7bff74fe20b99d698f7b1c3f2c.png)
Gokyo Shumyo, Section 1, Problem 103
pwaldron: Now white must fight a ko in the corner in order to capture the two crucial stones.
bucko: How about this third move? It creates a shortage of liberties in the TL corner.
![[Diagram]](../../diagrams/22/33f6366e4ecb1ca3408b598307de9533.png)
Throw-in then clamp.
![[Diagram]](../../diagrams/42/d8cebd004e4ee964e464cd2c339d9f7c.png)
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?
![[Diagram]](../../diagrams/48/381ef0fa458ee3a0e3c3add925925a83.png)
If B just descends, W descends too, then sacrifices two stones to make a dead eye shape.
![[Diagram]](../../diagrams/43/800216a2acff82b65025e98c8307b924.png)
Now W can cut and kill the whole corner in a simple liberty race.
![[Diagram]](../../diagrams/3/7cc056327dedd58a6ae482e97f609da3.png)
If black plays the hane, he is unable to cut after white descends.
unkx80: Very interesting! But...
![[Diagram]](../../diagrams/31/da77430110e04d6f815ba9322e53a5c9.png)
Throw-in then clamp.
I think
kills.
![[Diagram]](../../diagrams/41/c711782a0469c3529d7ee29d3a01cf14.png)
Throw-in then clamp.
With
, Black group is alive with two eyes.
![[Diagram]](../../diagrams/11/93080126c259dd6e96062453a6407964.png)
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:
![[Diagram]](../../diagrams/20/0a8da5d8ef1603f6a7f8c3ecf510a226.png)
Similar to before, but less B can do: Clearly B must now cut, so the sequence goes like so.
![[Diagram]](../../diagrams/39/8a914cb01fe1dc2aa89676bd8bb2d7f6.png)
And we are back to the variation that worked. :)
a and b are miai.