Don't help your opponent exercise 3

   

Problem 3:

[Diagram]

Don't help your oppponent


Problem 3 Attempt:

My guess is a, since b will help your opponent surround the top right group. If B1,W2,B3, then the group is almost certainly doing fine, white's two-stone group is hanging, and the circled stones have a base.

white's corner isnt alive yet either

[Diagram]

How the game went on

Very good Hikaru79. Notice how the shape looks a lot like problem 1.

Got a new one :)


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