Framework link negated?

The example shown on the right is taken from an actual game.White has just played white 1. Does this destroy the top to left side framework link? How should Black respond? (See next diagram below).

Detecting an overplay

Before white 1, Black believed that the framework link was intact. But immediately White played the stone, he wasn't so sure. But if he had obeyed the third directive he might have found black 2 on the left. Knowing that the link should still be intact should lead to the conclusion that perhaps white 1 is an overplay i.e. it should not work! Thus this is the time to put that extra bit of effort into finding the connection.

The difficult move to foresee in the sequence is black 6 but the preceding moves are easier to guess and are, in this context worth embarking upon. When white 5 is put in place, black 6 is not so difficult to find - it is the common ploy of playing where White needs to occupy. After black 6, due to a dearth of liberties, the white stones are trapped, the overplay is refuted, and the framework link is re-established!