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BQM47
  Difficulty: Beginner   Keywords: Life & Death

Hi I am really new to go and working my way through the exercises but I stopped at the 5th one


[Diagram]
Diag.: Black first, what is the result?


[Diagram]
Diag.: 1-3



[Diagram]
Diag.: Why 4?

In the solution white plays 4 and dies with 5..

Beginner Exercise 5 Solution

below that solution there is an example in which white plays somewhere else and after black closes the ko white kills the 3 stones but black can kill the big eye..

It seems to me that playing somewhere else is better than loosing an extra stone because in the second variation white gets 4 prisoners or something like that out of the situation.. at least something.



lavalyn: If (and only if) the White group has an extra liberty, White 4 is the squeeze tesuji for life. Black can't create the killable big eye because suicide is disallowed.

[Diagram]
Diag.: 4 is correct SOMETIMES

Technically, in the given problem White should play a ko threat so that she may have the chance of taking the 1-1 point, then to capture the other Black stone - for two eyes. All other attempts to live will fail.



Thank you for your help. I was a little bit confused because in the situation 4 makes no sense but with an extra liberty it does.



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