In the final scene Matthew and Pam are concluding a game of chess. Pam tells Matthew he can't move his Knight in front of her Queen. Obviously he can, and does and then declares "Checkmate".
It is not checkmate. The following moves could be- White King advances on Black Knight or White Bishop takes Black Knight, either way the mate is averted. Black no longer has a direct attack. Many ways for the endgame to go from here.
In the next scene the pieces are in different places.