Under the Stones Problem 4 / Solution
![[Diagram]](../../diagrams/11/5e8912c2f330ce6c7d31eeadb8b612dc.png)
Ko
This is a ko. Assuming
is a ko threat and black answers with
then black cannot kill by playing under the stones as shown in the next two diagrams.
![[Diagram]](../../diagrams/27/2825907a223751455524fa58a3cde16b.png)
Continuation 1
![[Diagram]](../../diagrams/4/6c29f804eaae62d5634977e2d26e2f4d.png)
Continuation 2
And white is alive because of his second eye at a.
![[Diagram]](../../diagrams/38/040f2af2a896812755442504a5c0d8fd.png)
White's resistance is not enough
is not the best move.
under
.
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