Beginner Exercise 231 / Solution

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[Diagram]

Solution

B1 immediately makes an eye. If White defends the center, for example with W2, then the throw-in at B3 will catch the three White stones in a connect-and-die and make the second eye. White can't connect at B3 for her weakness at a.

[Diagram]

Variation.

If W2 avoids the connect-and-die, then B3 captures three White stones in a connect-and-die. B3 at a or b also lives, but with less points.

[Diagram]

Failure 1

Do not make unneccessary sente moves like B1, because it reduces Black's liberties. After W6, Black cannot atari at a without putting the entire Black group into self-atari, so Black dies. B1 at W2 is a similar failure, W2 at B1 kills similarly.

[Diagram]

Failure 2

Although B1 captures three White stones for an eye, it is played in the wrong order and so W2 destroys the other eye and kills. a and b are miai for the connection.



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