3563 enclosure

3563 enclosure  

Occurs in What Grade Is This Fuseki / Otake's Answer.

In this case the relationship between the stones in the enclosure is not good shape.

White intervenes  

White can play as shown here. This breaks the direct relationship between the black stones. Black may have to give up points in the corner, and instead attack White's group.

O Meien-Takagi  

In a game O Meien-Takagi Shoichi in 2001, this happened, with White giving back the corner in return for good shape on the outside (White a next).

Zhou Heyang's formation  

Played in a game 2002-05-09 as --. White invaded at a, very much later in the game (move 108).