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44Point33Invasion...
364463Enclosure

 

364463 enclosure 3-3 invasion
    Keywords: Joseki, Life & Death, Tactics

[Diagram]
Yamashita-O

An example occurred in game 4 of the 2003 Kisei match Yamashita Keigo-O Rissei (B) (colours reversed). After the 3-3 invasion W1, B2 here was played, which is a textbook attempt to kill.


[Diagram]
Yamashita-O (continued)

Yamashita, however, challenged his opponent to kill him, playing W3, W5, and W7. O Rissei then resigned, leaving us with a reading problem, given the exact placing of nearby stones.

Charles Matthews


[Diagram]

Here is the position in the game with surrounding stones.



It is the positioning of the BC stone that causes some killing lines starting like White a, Black b, White c to fail. It would be nice to have some pro-level analysis of that, though.


[Diagram]

JeanPierreTavan? :

Here is Alexandre Dinerchtein's analysis for this position.

The problem begin when white block at W1 instead of W6 in the previous diagram.


[Diagram]

After B10, a and b are miai.

Source : [ext] Go4Go.net -- Sample commented games (game #17)



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(OC) 2004 the Authors, published under the OpenContent License V1.0.