Weak Carpenter's Square

    Keywords: Life & Death
[Diagram]

Weak carpenter's square

The weak carpenter's square is a carpenter's square without the connection at the corner of the shape. The vital point is the same, but this time White kills the corner by playing at a.

That is, the fact that the white+circle stone here is white, rather than Black, changes a the status of the group from ko to unsettled status.

Table of contents Table of diagrams
Weak carpenter's square
Endgame technique
Weak carpenter's square
not really a carpenter's square
not really a carpenter's square

Discussion

[Diagram]

Endgame technique

If Black has secured life by playing on the vital point, there is an important endgame technique for White to remember: the forcing moves at 1 and 3.


[Diagram]

Weak carpenter's square

There's no stone at the marked point, but White a kills nonetheless.

-- unkx80


[Diagram]

not really a carpenter's square

What about this one? Klaus



[Diagram]

not really a carpenter's square

Here's one sequence. Bob McGuigan

Book references


This is a copy of the living page "Weak Carpenter's Square" at Sensei's Library.
(OC) 2008 the Authors, published under the OpenContent License V1.0.
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