Then you're free to check the king.

5 seconds sound clip from the Harry Potter and the Sorcerer's Stone movie soundboard.

You can hear this line at 02:10:32 in the Blu-ray version of the movie.

Quote context

[...]

- Castle to e4!

- Pawn to c3!

- Wait a minute.

- You understand right, Harry.

- Once I make my move, the queen will take me.

- Then you're free to check the king.

- No. Ron, no!

- What is it? (2)

- He's going to sacrifice himself.

- No, you can't! there must be another way!

[...]