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Enclosure Opening
Path: EnclosureTechniques · Prev: DonTAllowYourOpponentToMakeTwoEnclosures · Next: OrthodoxFuseki
Difficulty: Advanced
Keywords: Opening
Opening pattern along one side in which Black's third move (move 5,
Black plays at the marked point to create a good territorial formation. This opening became very popular in the first decade of komi Go.
When White approaches low in the right-hand corner,
This continuation became settled theory (
When White makes the high approach here, Black at a is the usual play. The pincer at b will turn out well for White if the correct variation is chosen (on the page about this pincer apply the ladder-dependent variation in 2.1.1). The pincer at c is played sometimes in high-level games, but Black must seek complications to gain advantage from it.
This is the position after the main variation of the pincer at ''c''. White ends in gote but can regard plays in the directions of the two marked points as being nearly miai for a follow-up.
Yes, assuming a white 4-4 point in the lower right, as we're looking at it, Black next at b is recommended (if I recall correctly) by Go Seigen and Yang Yilun; while Black at a is also played. In a sense we should read this backwards: taking into account White's formation, Black should anticipate this standard outcome when playing the initial pincer. If White had a 3-3 point lower right, Black would perhaps be less worried about a fight on the right side. Charles Matthews
The nadare has been tried many times by pros. An interesting idea (Cho Chikun in 1972) in the application of the traditional ''onadare'' main line was to replace a by
The classic pattern here is, however, with this standard joseki. Black takes sente, having secured both corners. Black at a is a checking extension setting up an invasion at c, which is therefore very big; Black at a or White at b will be played soon.
A surprising idea that must have been born out of professionals' dissatisfaction with that result is to play
An innovation of Takemiya was to play for central influence by making the solid connection with
An idea from Kitani Minoru in the late 1950s is for White to play a wedge on the side instead. White 1 is the point chosen in pro games: none of a, b or c is seen. After This way of playing has been adopted from time to time by top players, so is presumably reasonable considering komi, to simplify the game. See enclosure opening distant low approach, pincer for discussion of an interesting less-used pattern. Much less common are the enclosure opening-style sides based on enclosures using the 3-5 point. These are discussed on the 3554 enclosure, 3555 enclosure and 3564 enclosure pages. The analogues for 4-4 point, 3-3 point and 5-4 point enclosures of this side pattern are all rare: enclosing the right corner would normally take priority. Path: EnclosureTechniques · Prev: DonTAllowYourOpponentToMakeTwoEnclosures · Next: OrthodoxFuseki This is a copy of the living page "Enclosure Opening" at Sensei's Library. ![]() |