Angle play after diagonal attachment

Ugly angle play  

The problem is with . I (Charles) see this often when White enters Black's sanrensei. Black can get good territory by playing at a; while in a handicap game playing at b for influence is also good.^[1]

Plays for a base  

If White really wants to make a base, playing is better. The common play is c, but that can mean that White is driven out into the centre.

Another way  

Fhayashi - This is suggested in The Power of the Star Point

Charles is fine, but is a bit heavy: try at a (or even b) instead.

Takemiya-Jiang  

From Takemiya Masaki-Jiang Zhujiu 1988-08-21. Here takes into account the earlier exchange of and to the right. White lives quickly (White 11 at d) and claims that Black is a little overconcentrated to the right. In return, Black can claim greater security on the left: to invade at e and get the answer Black f is seemingly a bad idea for White, seriously weakening her side group.

Charles Matthews

Double hane continuation  

In answer to , Black has a choice of playing at in this diagram, or this sequence to give White bad shape.