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Aliases (info)
Invade
Invading
Invasions

Paths
InvasionItinerary
AboutTheOpening
ElementaryMoves1

Referenced by
Joseki
Moyo
33PointInvasion
AttackAndDefence
Enclosure
EyeDefinitionDisc...
Keshi
SanrenseiFuseki
FrameworkTheory
KobayashiFuseki
PlayAwayFromThick...
Omoyo
BadAji
Premature
Overplay
MiddlegameJoseki
InvasionsOnTheSide
PlayOnThePointOfS...
3454Enclosure
StrongGroups

 

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) 2003 the Authors, published under the OpenContent License V1.0.