There is Death in the Hane

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    Keywords: Proverb

This proverb, "There is death in the hane", refers to the fact that the hane is a very common method of killing groups. The main purpose of the hane is to reduce the space for making eyes.

Example 1

[Diagram]

Example 1

The hane at W1 kills the Black group with a bulky five dead shape. If Black tries to capture at a, this does not gain an eye, and White can block Black's escape at b.



Example 2

[Diagram]

Example 2

For example, this Black group (an L+1-group) can be killed with the hanes at W1 and W3. If Black blocks at a, it will turn Black's interior space into a dead bulky five. White can then kill Black with a placement tesuji at b.



Notice that in the above examples, the hane stone is not defended when put into atari. Instead another hane or a placement follows. That is because the capturing the hane stone will get a false eye.


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This is a copy of the living page "There is Death in the Hane" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.
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