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Aliases (info)
Eyes

Paths
Shape
EyesCollection
LifeAndDeath

Referenced by
Miai
CapturingRace
TwoEyes
EyeSpace
Extension
UnderTheStones
FalseEye
ThrowIn
BigEye
GeneralEyeDefinition
EyeDefinitionDisc...
TheSecondBookOfGo
EyeStealingTesuji
EyeLiberties
SekiWithEyesQuestion
BigEyesCanBeSmall...
NoEyeVersusNoEyeC...
ShutIn
EyeVersusEyeCaptu...
AtariGoAsATeachin...

 

Eye
Path: EyesCollection   · Prev:   · Next: TwoEyes
  Difficulty: Beginner   Keywords: Life & Death, Go term

Eyes are a central concept in Go, since two eyes guarantee the life of a group. And one eye can mean a great advantage in a semeai (close battle). Beware of a false eye that may look like an eye.

In general, what Go players call an eye is an empty space surrounded by stones of one colour.

[Diagram]
An eye in the centre

[Diagram]
An eye on the side

[Diagram]
An eye in the corner


There is much discussion on the definition of what is an eye and what is not. The general eye definition is non-mathematical. There are also discussions of technical algorithmic definitions meant mainly for mathematicians and computer programmers, where absolute precision is needed.


The Eyes Collection gathers links to many pages related to eyes at Sensei's Library.


Grauniad: Why do all the examples of eyes on this and related pages contain a single point? Can't an eye contain more than one point? Won't single-point examples of eyes mislead readers?

Stefan: An eye can indeed contain more than one point, as no doubt you know. Everybody figures that out in due time though, and I do believe there is more room for confusion of beginners if we include examples with more than one point.

Dieter: We could do it, dividing this page into several sections.



Path: EyesCollection   · Prev:   · Next: TwoEyes
This is a copy of the living page "Eye" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.