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Beginner Exercise 5 Solution
Difficulty: Beginner
Keywords: Problem
This problem assumes that the reader knows how a ko fight works. Introduction
This shape looks like the twisted four, but it is at the corner. We note that when the group has only one outside liberty at
White cannot escape by
Solution
If Black wins the ko, he will connect at
If White wins the ko, he will capture at
If
If
Failure
This lives too.
Additional information
When White has two outside liberties, he lives without ko.
Even if
DiscussionThis discussion is at a slightly higher level than the intended level of the problem. Whether this is a picnic ko is not clear. If White wins, he lives; if Black wins he dies. Hence, we cannot say that this ko is lopsided. Perhaps White invaded Black's corner and managed to make ko. That kind of thing is not unusual. It is a mistake to think of something as your territory unless your opponent cannot invade to no effect. Authors
This is a copy of the living page "Beginner Exercise 5 Solution" at Sensei's Library. ![]() |