Introduction

The lesson video is the following

Main position

During this lesson, we’ve seen how to manage this overplay after the joseki on the right.

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White is supposed to extend at A to finish the joseki. He is trying to profit hoping black would defend the corner and come back at A later.

Black punishes

But black can attack strongly here by first capping at 2 and then peep at 6.

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White has no choice but to defend himself and black can come back to pincer the stone with 8.