[Welcome to Sensei's Library!]

StartingPoints
ReferenceSection
About


Referenced by
KyuExercise4
SLHistory

 

Kyu Exercise 4 Attempts
    Keywords: Problem

I am only 12 kyu on KGS so this is definitely a kyu-level attempt.

[Diagram]
Solution 1: Black first kills

Throw in with B7 to create a bulky five shape.


[Diagram]
Solution 1 failure: White lives

My first instinct was to throw in at B3 to create the bulky five shape but W4 refutes that.


[Diagram]
Solution 2: Black first kills

This seems to be another solution.


[Diagram]
Solution 2 variation: White 2

White dies.



[Diagram]
Variation

Dieter: (I have to write something on page 5000?) This variation is to be considered too, I think. After W8, a play at 1 and at the marked stone are miai to live.


[Diagram]
Variation

unkx80: Thanks for the attempts. =)

Black should play at B3. Then if W4 connects, B5 kills the group. If W4 is played at B5 instead, then Black plays at W4 and White is still dead (a is a false eye).


[Diagram]
Variation

If White captures immediately, Black captures the two stones on the left.


[Diagram]
Variation

If W4 here, there is no eye at the BC stones and a dead shape in the eyespace.



Goantti: I'll add a missing variation.

[Diagram]
Variation

White can try W4 but then Black plays B5.


[Diagram]
Variation

Now the points a and b are miai to kill.


[Diagram]
Not the same problem anymore

I calculated also the variation where instead W4 above, White plays counter-atari at B5. It would have worked if there had been one more line of white stones on the right. In this case White would not take at a but would atari at W2 instead.

Bill: Oh, don't stop now! B3 above takes six white stones.

[Diagram]
Under the stones

Now W1 kills the three BC stones (under the stones). If B2 then W3 oshitsubushi prevents a dead shape.



This is a copy of the living page "Kyu Exercise 4 Attempts" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.