Capture the Cutting Stones in Joseki 2
The proverb is "Capture the cutting stones". This discussion continues from the previous page.
After the 3-3 point invasion at , Black blocks and plays double hane with and . White naturally cuts and now the proverb comes in.
is a cutting stone. and capture the cutting stone. and capture the corner.
If White ignores the proverb, Black will gladly follow it and capture in a ladder at , or cut it off with a.
This is even sente against the White group. See Kyu Exercise 1. So White ends up in an unfavorable position.
 It is improbable the ladder is bad, because then Black would not have played the double hane.
Charles I wonder if this comment can be checked in pro games.