Honte Lib 1

Shusaku komoku joseki  

After White's two space extension, Black can choose to secure the corner with . White usually replies with shape-destroying . After that is described in Ishida's joseki dictionary as honte. A broader extension would leave more aji.

Tapir: Isn't played at a as well? Anon: I recall seeing played at a, but in games where W already already has a stone around b.