Double Hane Followup

  Difficulty: Advanced   Keywords: Tesuji, Shape, Tactics
[Diagram]
From one stone  

White can connect, since Black threatens a double atari. White can also atari then connect at one of the points a, making a full triangle. If White plays one of the points b Black can atari at the other and force White into an empty triangle.

[Diagram]
From two stones (i)  

White can stretch (nobi) at 1 or double hane at a. At b makes an empty triangle. The hanging connection at c invites the atari at 1. Again White can play atari before playing one of those options.

[Diagram]
From two stones (ii)  

With the marked stone in place, answering at a invites a double atari at b. White 1 and c are possible defenses. Both invite another atari by Black leaving many cutting points. White b would be bad shape.

[Diagram]
From three stones (i)  

Three stones is often the threshold for the effectiveness of the double hane.

[Diagram]
From three stones (ii)  

Three is also the threshold for the double hane as a response being possible. The loss of three stones outweighs the ponnuki.


See also


Double Hane Followup last edited by Dieter on November 29, 2023 - 13:49
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