Beginner Exercise 189 / Solution

Sub-page of BeginnerExercise189

Correct solution:

[Diagram]

Black's alive! :)

If white plays a, black plays b.. And still alive..


Wrong attempts:

[Diagram]

Would be wrong..

a and b are miai.. If black takes one, white plays the other and kills..

[Diagram]

Snapback

The main trap in this problem is that Black cannot play at B1. Because W2 is a snapback, in that if Black plays at a to capture the W2 stone, then White will capture the Black stones by playing at W2 again. Hence, the BC stones cannot be saved, and the whole group is dead.


Ohh and why does black need to add a move?

[Diagram]

If black doesn't..

Because white can kill! Black can't play at a! (It'd be self-atari..)


Solution by Reuven.



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