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Four Is Five And Five Is Eight And Six Is Twelve
Path: GoProverbs   · Prev: FourDieButSixLive   · Next: CarpentersSquare
  Difficulty: Advanced   Keywords: Proverb, Tactics

4=5, 5=8, 6=12

This proverb applies to the extra liberties an encircled group gets due to its internal dead eye space (see also Nakade and Nakade Liberties).

[Diagram]
Diag.: 4=5

An internal eye of four points is worth five liberties in a semeai.

It may look like white cannot win since black has 5 outside liberties, but the four point nakade gives white five liberties as well. So if she has sente...


[Diagram]
Diag.: 4=5 (continued)

Black is captured.



[Diagram]
Diag.: 5=8

An internal eye of five points is worth eight liberties in a semeai. However, in a five point nakade which is dead, black has already got a stone in it, so this reduces the actual liberties to 7.

It may look like white cannot win since black has 7 outside liberties, but the five point nakade gives white eight liberties as well. So if she has sente...


[Diagram]
Diag.: 5=8 (continued)

[Diagram]
Diag.: 5=8 (continued)

And black is captured.



[Diagram]
Diag.: 6=12

An internal eye of six points is worth twelve liberties in a semeai. However, in a six point nakade which is dead, black has already got a stone in it, so this reduces the actual liberties to 11.

It may look like white cannot win since black has 11 outside liberties, but the six point nakade gives white eleven liberties as well. So if she has sente...


[Diagram]
Diag.: 6=12 (continued)

[Diagram]
Diag.: 6=12 (continued)

[Diagram]
Diag.: 6=12 (continued)

And black is captured.

--MortenPahle



Path: GoProverbs   · Prev: FourDieButSixLive   · Next: CarpentersSquare
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