Taisha solid connection

  Difficulty: Expert   Keywords: Joseki
[Diagram]
Normal  

This page deals with the standard pattern, following the complex variation of the taisha joseki (also known as taisha tobitsuke), where B1 makes a solid connection. The other two major patterns are a, taisha nobi 1 and b taisha nobi 2.

[Diagram]
Normal  

This is the most common development, after a while the groups in the center develop shape.

[Diagram]
Reputable  

Black 1 here has been played by some top players down the years (Shusai, Sekiyama Riichi, Hashimoto Utaro). The line continues with W2 and B3, and is thoroughly analysed in Ishida.


[Diagram]
An apparent impossibility  

Black B1 here is a pro play, though rarely used. Examples include Weon Seongjin (4p) vs Lee Yeongkyu (2p) in 2003 and Kubomatsu-Kitani in 1934. This is a pushing battle with a hamete in it. Black B3 may look as if it's easy to refute - but beware the two-stone edge squeeze!

[Diagram]
Two-stone edge squeeze, part 1  
[Diagram]
Two-stone edge squeeze, part 2  
[Diagram]
Two-stone edge squeeze, part 3  

After the squeeze, the white dumpling at the edge of the board is short on liberties, and it is Black's move. Black can capture all the white stones by playing a next.

Therefore W7 is a mistake, and W11 is a blunder (white can at least salvage some corner territory by playing W11 at b instead).

[Diagram]
The standard joseki  

According to Ishida, white should dodge away at W7 instead of playing a. KataGo suggests that white can deviate earlier, with W1 at b or c instead.


[Diagram]
Rare  

This idea of B1 appeared in a couple of Go Seigen's games in the 1930s.

[Diagram]
Shuwa's move  

Black B1 and B3 were not mentioned in Ishida, but were played by Shuwa.

[Diagram]
Unreasonable?  

That leaves these plays a and b from Ishida unaccounted for; they may be outright tricks. Analysis is given there for a; for b too but that was played differently 1974-06-06 by Hashimoto Utaro against Magari Reiki (game on Gobase).

Gobase also has a game 1973-10-31 between 1 dan pros Inoue Hatsue and Kimura Yoshio in which Black tries c.


Taisha solid connection last edited by xela on December 7, 2024 - 05:48
RecentChanges · StartingPoints · About
Edit page ·Search · Related · Page info · Latest diff
[Welcome to Sensei's Library!]
RecentChanges
StartingPoints
About
RandomPage
Search position
Page history
Latest page diff
Partner sites:
Go Teaching Ladder
Goproblems.com
Login / Prefs
Tools
Sensei's Library