TJHProblem 7/ Solution

Sub-page of TJHProblem7

hotcoffee: It appears to be an undecided situation. I've tried to analyse this completely - if there are any mistakes I do apologise.

[Diagram]

White kills

hotcoffee: If B2 doesn't connect, white can capture 2 stones and black has dead shape (below). If B4 at 'a', W5 at B4 and black is short of liberties.

[Diagram]

Variation

If Black doesn't defend against the atari, then White will capture two stones with W3. By symmetry there are only 3 variations based on where B2 is placed (excluding a sensible tenuki). As Black can only make a bent-3 or 2x2 square eyespace, he is dead. eg. in this position 'b' and 'c' are miai for the kill.


hotcoffee: Black lives with B1 below. Two less obvious variations are below. For the unshown variations, if white ataris two stones, black connects and is alive.

[Diagram]

Black lives with 1

There are several variations of white attacks, in most cases white has 3 ko-threats, before the aji is gone and black is untouchable.

[Diagram]

Black lives

B3 is also appropriate if W2 is played at 'a' or 'b'.


[Diagram]

Black also lives with 1


This is a copy of the living page "TJHProblem 7/ Solution" at Sensei's Library.
(OC) 2011 the Authors, published under the OpenContent License V1.0.
[Welcome to Sensei's Library!]
StartingPoints
ReferenceSection
About