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KyuExercise4

 

Kyu Exercise 4 Attempts
    Keywords: Problem

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

[Diagram]
Diag.: Solution 1: Black first kills

Throw in beside 2 to create a bulky five shape.


[Diagram]
Diag.: Solution 1 failure: White lives

My first instinct was to throw in at 3 to create the bulky five shape but White 4 refutes it.


[Diagram]
Diag.: Solution 2: Black first kills

This seems to be another solution.


[Diagram]
Diag.: Solution 2 variation: White 2

White dies.



[Diagram]
Diag.: Variation

Dieter: (I have to write someting on page 5000) This variation is to be considered too, I think. After White 8, a play at 1 and at the marked stone are miai to live.


[Diagram]
Diag.: Variation

unkx80: Thanks for the attempts. =)

Black should play at 3. Then if White 4 connects, Black 5 kills the group. If White 4 is played at 5 instead, then Black plays 4 and White is still dead (a is a false eye).

I'll create the solution page at a later time.


[Diagram]
Diag.: Variation

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


[Diagram]
Diag.: Variation

If White 4 here, there is no eye at the marked stones and a dead shape in the eyespace.



Goantti: I'll add a missing variation. :-)

[Diagram]
Diag.: Variation

White can escape atari with 4 but then Black plays 5.


[Diagram]
Diag.: Variation

Now the points a and b are miai to kill.


[Diagram]
Diag.: Not the same problem anymore

I calculated also the variation where instead of escaping atari with 4 White plays counter-atari at 5. It would have worked if there had been one more column of two white stones on the right. In this case White would not take at a but would atari at 2 instead.

Bill: Oh, don't stop now! Black 3 above takes six white stones.

[Diagram]
Diag.: Under the stones

Now White 1 kills the three marked stones (under the stones). If Black 2 then White 3 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.