Beginner Exercise 19 / Solution

Sub-page of BeginnerExercise19
[Diagram]

White first to live

The eye at a is already secured. White needs to make another in the space around b. First, immediate capture W1 is insufficient - B2 makes the eye false.

[Diagram]

B6 at B2

Second, capturing two stones by W1 and W3 is also insufficient - B4 and B6 throw-in at B2 again makes the eye false.

[Diagram]

White's tesuji

So White chases Black longer with W3 and then W5! threatens to capture three to make an eye, forcing Black to capture with B6. (Note: W5 at a is an unnecessary sacrifice, though it lives similarly.)

[Diagram]

Continued

After W1, Black can't connect at W3 because of White's cut at B2, capturing all six in connect-and-die. This trick works only near the corner - if the whole position is moved one or more lines to the right, White is dead.

[Diagram]

White secures two eyes

White lives.



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