Beginner Exercise 270 / Solution

Sub-page of BeginnerExercise270

B1 makes an immediate eye while threatening to lasso tbe two white stones. W2 protects from it, but is too slow for B3, which creates the other eye, and life with it. Noticing that B3 also threatens the W2 group, white presumably has to respond by connecting to her outside group with W4, thus ending this sequence in gote.


If white plays this way, W2 puts the upper black stones in atari. Black must respond at B3. B3, in turn, threatens the W2 group, so white must respond with W4. W4 puts the entire black group in atari, so black must capture the entire invading white group with B5. In the sequence itself, white loses (and black gained) a lot more (locally) than he needed to.


Atari at B1 is a fatal mistake. Instead of connecting, W2 can hane. Due to shortage of liberties, Black does not have the option to capture the White stones at a (connect-and-die).

Failure (W4 at white+circle)  

So B3 captures, but this is a capture two, recapture one, in which W4 captures back the B3 stone. Black is left with only one eye.

Beginner Exercise 270 / Solution last edited by on July 1, 2009 - 01:25
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