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RTGProblem3

 

RTG Problem 3 Solution
    Keywords: Problem

[Diagram]
Diag.: Solution

The key is at 1, making a tiger shape. Notice that Black cannot play at a. And if Black plays at b, White will play at a.


[Diagram]
Diag.: Solution

If Black 2 blocks, White 3 descends and secures one eye. If Black 2 at 3, then White 2, Black a, White b, Black c, White d, and White still secures the eye on the right side.


[Diagram]
Diag.: Solution

The interesting part comes when Black 4 attempts to destroy the other eye. However, White can play as in Beginner Exercise 19, making the throw-in at 9 and capturing three black stones in a connect-and-die to form the second eye. Subsequently, if Black a, White b plays atari.



[Diagram]
Diag.: Failure 1

White 1 (or a) trying to expand the eye space fails instead. The wedge at 2 is the vital point, and is a common killing technique. Now it is not possible to make a real eye on the left side.


[Diagram]
Diag.: Failure 2

Six die but eight live, so connecting at White 1 does not work either.



KarlKnechtel, HolIgor, unkx80



This is a copy of the living page "RTG Problem 3 Solution" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.