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Tripod Group
Path: LifeAndDeath · Prev: LongLGroup · Next: JGroups
Difficulty: Intermediate
Keywords: Life & Death
The black group in this diagram is called tripod group. It is one of the smallest shapes in the corner that is alive as it stands. Black needs to remember the correct reply to two white attacks.
This is the first attack. After Alain : This is true in most positions, but Black should be careful when White plays in the neighbourhood!
One should keep in mind that a white move at one of the marked points threatens locally to kill the corner. Of course, White has to be very strong on the outside if she wants to play like this.
This is the second attack. In this context, Black must be careful not to make the following 'sente' exchange.
The reason is that the status of the corner has now changed to ko. White can set up this ko following the next diagram.
Black is now forced to win the ko if he wants to keep the territory in the corner.
Black cannot play descent at
The a-b exchange creates a shortage of liberties. After
The throw-in at
This variation with --unkx80
We have practiced the tripod group at our club. In response to
So, Black escapes, but loses his corner territory and, what's more important, his eye potential there. Practical application
This is a position from the final game of the 2000 German Championship, between Franz-Josef Dickhut (Black) and Christoph Gerlach (White). Black wanted to do something about the upper left corner.
So he invaded at
From an endgame point of view, it is better for White to play like this diagram: Black will end up with two points less in the corner. However in the game White followed the previous diagram, probably because he didn't like the remaining weaknesses on the left side following this sequence.
How can Black defend against
This move seems to work. a and b are miai, as are c and d. - Andre Engels
SnotNose: The tripod group (in the surroundings shown) is unconditionally alive. If White a, Black b. If White c, Black d. Path: LifeAndDeath · Prev: LongLGroup · Next: JGroups This is a copy of the living page "Tripod Group" at Sensei's Library. ![]() |