RTG Problem 3 / Solution

Sub-page of RTGProblem3
[Diagram]
Solution  

The key is the hekomi of W1, making a tiger shape. Notice that Black cannot play at a. And if Black plays at b, White will play at a.

[Diagram]
Solution  

If B2 blocks, W3 descends and secures one eye. If B2 at W3, then W2, Black a, White b, Black c, White d, and White still secures the eye on the right side.

[Diagram]
Solution  

The interesting part comes when B4 attempts to destroy the other eye. However, White can play as in Beginner Exercise 19, making the throw-in at W9 and capturing three black stones in a connect-and-die to form the second eye. Subsequently, if Black a, White b plays atari.


[Diagram]
Failure 1  

W1 (or a) trying to expand the eye space fails instead. The wedge at B2 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]
Failure 2  

Six die but eight live, so connecting at W1 does not work either.


KarlKnechtel, HolIgor, unkx80


RTG Problem 3 / Solution last edited by BobMyers on November 17, 2005 - 01:28
RecentChanges · StartingPoints · About
Edit page ·Search · Related · Page info · Latest diff
[Welcome to Sensei's Library!]
RecentChanges
StartingPoints
About
RandomPage
Search position
Page history
Latest page diff
Partner sites:
Go Teaching Ladder
Goproblems.com
Login / Prefs
Tools
Sensei's Library