Beginner Exercise 229 / Solution

Sub-page of BeginnerExercise229

Prelude

[Diagram]
Prelude. (2 elsewhere)  

Before presenting the solution proper, it is worth repeating that if Black occupies B1, then if W2 plays elsewhere or at a, then B3 lives. Thus Black has a sente move at B1.

[Diagram]
Prelude.  

So the hane at W2 kills with a bulky five dead shape. If Black tries to escape from B5 onwards, he will find that there is no way out. After W10, if Black a, then White b blocks with a tiger's mouth.



Failure

[Diagram]
Failure.  

Therefore Black tries the hane at B1. Sometimes it is a technique to live, but here, B1 is more like a trick play. Here W2 falls into the trap, allowing B3 to play the sente move described above, aiming to live with a. If W4 tries to kill, then B5 captures the W2 stone and connects outside.



Solution

[Diagram]
Solution.  

From all the above discussion, it should be clear that the solution is for White to simply retreat from W2 to W6, not allowing Black to play a in sente. When B7 crawls further, W8 can block because this is a tiger's mouth. So Black dies as explained in the L-group page.



Beginner Exercise 229 / Solution last edited by P7A77 on February 8, 2005 - 01:29
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