Beginner Exercise 171 / Solution

Sub-page of BeginnerExercise171
[Diagram]

White connects

W1 the proper move. Black only really has two choices to resist white's connection.

[Diagram]

Black tries to resist

There's this rather poor choice which easily allows White to push through with W2, and not only connect, but also capture 3 black stones.

[Diagram]

White connects

B1 is a bit trickier. W2 is a double atari. B3 captures white+circle, but then W4 captures black+circle to connect.

[Diagram]

White connects over the other stone

togo: (Nearly) same thing with Black playing B1 on the other side. Then again W2 is a double atari. B3 captures white+circle, but then W4 captures black+circle to connect.

[Diagram]

Irrelevant variation

togo: W4 captures and connects, too, but in a less solid way (presenting Black with a ko-threat). Nonetheless it's interesting shapewise: If you imagine a white stone at 'a', then W4 not only captures black+circle, but creates a backsnapping eye at black+circle (which would be ko-dependent with W4 on 'b' as before).

[Diagram]

Failure

White almost gets a ladder going.



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