[during the final chess game; Harry looks around at the board]

Harry : Wait a minute!

Ron : You see it, don't you, Harry? Once I make my move, the Queen will take me. Then you're free to check the King.

Harry : No. Ron, NO!

Hermione : What is it?

Harry : He's going to sacrifice himself.

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

Ron : Do you want to stop Snape from getting that stone or not?

[Hermione looks stunned]

Ron : Harry, it's you that has to go on, I *know* it. Not me, not Hermione, YOU.

[Harry takes a deep breath and nods]

Ron : [after a deep breath] Knight to H3.

[Ron and his horse advance to the next square. Ron breathes deep]

Ron : Check.

[The white Queen turns, advances slowly upon him, then draws her sword and plunges it into his horse, throwing him violently to the ground]

Harry : RON!

[Hermione makes as if to run to him]

Harry : [to Hermione] NO! DON'T MOVE! Don't forget - we're still playing.

[Harry moves three squares diagonally to his left and turns to face the King]

Harry : CHECKMATE.