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Invade
Invading
Invasions

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AboutTheOpening
InvasionItinerary

Referenced by
Framework
33PointInvasion
AttackAndDefence
Keshi
Enclosure
EyeDefinitionDisc...
SanrenseiFuseki
FrameworkTheory
Overplay
ChineseGoTerms
BadAji
PlayOnThePointOfS...
Omoyo
MiddlegameJoseki
StrongGroups
DonTTakeAwayYourO...
3454Enclosure
InvasionsOnTheSide
SpeculativeInvasion
Shinogi

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Invasion
Path: InvasionItinerary   · Prev:   · Next: Uchikomi
    Keywords: MiddleGame

An invasion (Japanese: uchikomi) is a play made inside an enemy framework with the intention of living or escaping.

[Diagram]
Invasion example from a joseki

If after Black's kosumi B2 White makes a three-space extension to W3, with the idea of having a good shape after the Black a-White b, exchange, Black instead plays an invasion B4.

See also Invading an enclosure, Invasions on the side and 3-3 Point Invasion.

See also Invasion Itinerary.



Invasions occur throughout the game.

  • In the opening they are probably part of standardised joseki.
  • In the middle game they may be middlegame joseki, follow-ups in well-known positions, or just as likely occur as one player exerts the power of influence built up in an earlier fight.
  • In the endgame they can be considered as 'gouging' tactics (Japanese eguri).

The difference between the second and third cases is that invasions in the middle game phase may create weak groups; which have no place in the endgame, where everything in theory is already settled in status and there is nowhere much to run.



Path: InvasionItinerary   · Prev:   · Next: Uchikomi
This is a copy of the living page "Invasion" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.