Beginner Exercise 190 / Solution

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White kills marked black stones  

The black+circle stones are not invincible because of the white+square white stone.

After W5, black can't save the marked stones from being retaken at W1.

If B1, then a play at the circled point catches a connect-and-die.

unkx80: Good!

For more similar examples, see the bamboo joint may be short of liberties.

How to answer B2?  

unkx80: To make the discussion more complete, consider how to answer B2?

Shorter ladder  

unkx80: The failure sequence shown is not a ladder at all. This can be seen after B8, which captures the W1 stone and makes an atari on the W5 stone.

Beginner Exercise 190 / Solution last edited by xela on October 25, 2022 - 13:17
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