GokyoShumyoSection1Problem103/Attempts
![[Diagram]](../../diagrams/1/e5d0bee680434da83f01843332e432fc.png)
Gokyo Shumyo, Section 1, Problem 103
Whati if W E19?
![[Diagram]](../../diagrams/31/c7423e113c5634ac34fae3586c90adbd.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/19/59cad85f914798c14b2827de486cf846.png)
Gokyo Shumyo, Section 1, Problem 103
pwaldron: The best I have found so far is this. (
connects)
![[Diagram]](../../diagrams/19/21ea7e5744d31113c3156b1b7f17eb11.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/47/4a62c1bf08ee090d3a87a32c48b1685d.png)
Throw-in then clamp.
![[Diagram]](../../diagrams/26/6aefd7c285aab2ab7fe034657f847b28.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/50/9d6abefdbe9326ef00e83bdadfd3d282.png)
If B just descends, W descends too, then sacrifices two stones to make a dead eye shape.
![[Diagram]](../../diagrams/20/0950caf785bb651c49e56bf55b03f275.png)
Now W can cut and kill the whole corner in a simple liberty race.
![[Diagram]](../../diagrams/32/b98c361cf53e8e35149311eec98f10dd.png)
If black plays the hane, he is unable to cut after white descends.
unkx80: Very interesting! But...
![[Diagram]](../../diagrams/36/4fe20dd8ba28ad599adf62dad0e13d8c.png)
Throw-in then clamp.
I think
kills.
![[Diagram]](../../diagrams/10/28595739a14e3651289df6e9c56d9934.png)
Throw-in then clamp.
With
, Black group is alive with two eyes.
![[Diagram]](../../diagrams/27/6d238fe1b9ba10aa6a05dd04f84cd24e.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/49/3fc575bd8cae4a5a9c0662f0ed13b040.png)
Similar to before, but less B can do: Clearly B must now cut, so the sequence goes like so.
![[Diagram]](../../diagrams/49/887d371d443bf39693f7aabf99649583.png)
And we are back to the variation that worked. :)
a and b are miai.