Kyu Exercise 4 / Attempts

Sub-page of KyuExercise4

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

Solution 1: Black first kills

Throw in with to create a bulky five shape.

Solution 1 failure: White lives

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

Solution 2: Black first kills

This seems to be another solution.

Solution 2 variation: White 2

White dies.

Variation

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

Variation

unkx80: Thanks for the attempts. =)

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

Variation

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

Variation

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

Goantti: I'll add a missing variation.

Variation

White can try but then Black plays .

Variation

Now the points a and b are miai to kill.

Not the same problem anymore

I calculated also the variation where instead above, White plays counter-atari at . 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 instead.

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

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

I'm only a KGS 14K, so this really, REALLY is a kyu attempt.

Here's my take on this problem. I think it works!

unkx80: Explain how you would kill this.

Black kills after white's mistake

Skylancer (2K): Additional comment - if white is so kind as to connect at in response to , then black must play at immediately to kill ( in the original diagram).

Black's second mistake

If Black makes the mistake of playing at this after White's mistake, then lives all over again by making an eye and protecting the cut at A at the same time.

Kyu Exercise 4 / Attempts last edited by Unkx80 on November 25, 2009 - 18:24
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