Beginner Exercise 262 / Solution

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Solution 1

This is a simple exercise on finding the space to make an eye. After B1, a and b are miai, and c and d are also miai, so Black lives.

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Solution 2

Anonymous: a and b are miai. I think this solution is preferable, because there is one less killing threat for white. (See below)

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White threats in solution 1

Anonymous: White has 5 ko threats, each of them threating to kill the entire group.

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White threats in solution 2

Anonymous: Here W9 is only worth 6 points, since it doesn't threaten to kill the group, but merely to capture the three marked stones.



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