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KyuExercise28/Att...

 

Blind Spot Problem 2 / Solution
Sub-page of BlindSpotProblem2

Analysis

[Diagram]
Analysis

There is an eye at a. If Black can connect the BC stone back, then White will be dead.



Solution

[Diagram]
Solution

The blind spot is B1. Now White cannot capture the BC stone.


[Diagram]
Variation 1

If W2 blocks, then B3 captures the White group including W2.


[Diagram]
Variation 2

When W2 clamps at the BC stone, B3 connects the BC stone to the outside stones. Due to shortage of liberties, White cannot play at a.


[Diagram]
Variation 3

The diagonal move at W2 is an interesting one. But B3 makes a and b miai.



Failure

[Diagram]
Failure 1

The crawling in at B1 is too simple, since W2 can atari.


[Diagram]
Failure 2

The cut at B1 is too early. W2 is the only correct reply (see Kyu Exercise 28). After W6, the three Black stones including BC is caught in a connect-and-die.


[Diagram]
Failure 3

B1 is a failure.


[Diagram]
Failure 3

After W6, Black is caught in a double shortage of liberties.


[Diagram]
Failure 4

B1 here is also wrong.


[Diagram]
Failure 4

After W6, Black cannot set up a snapback since playing at a places Black in self-atari.


[Diagram]
Failure at Variation 2

B3 here allows W4 to block.


[Diagram]
Failure at Variation 3

This cut at Black 3 does not work.



Authors:



This is a copy of the living page "Blind Spot Problem 2 / Solution" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.