"Tony T. Warnock" wrote in message ...
The idea has been used in the exchange variation of the Ruy Lopez and
the Classical variation of the Ruy since the 1800s.

I have also seen a similar setup in a game between Mieses and Fritz,
played early in the last century, that arose from a Vienna Game. I
was more concerned with the origins of this specific line of the
Philidor - i.e. did Lombardy invent it, or had it arisen earlier?

If anybody has chessbase, or the Philidor def. database, could you
help? What are the earliest known games with 3. ...Qf6?