If the last move terminates the game, set the result

[mattflaschen]

If the last move terminates the game (e.g. checkmate or stalemate), set the result automatically (1-0, 0-1, 1/2-1/2).

The pgn method already uses the Result header, so setting the header would be enough.

[mattflaschen]

Possibly, this should set the Termination header too.