W: David Gates (1738) vs B: Mustafa Kamal (2121)
In the actual game Mustapa choose the obvious looking 11...f6. However the best move is
11...Nc6! after 12.Bxg7 [ if 12.Nxc6 Bxf2+ (not 12...bxc6 13.Nd6+ and white can still play) 13.Kd2 Qe3# checkmate] 12...Rg8 13.Nxc6 Bxf2+ 14.Kd2 Qe3#checkmate. Black can however choose to play a piece down with 11.Qe2 or 11.Bd6.
For the record, Mustapa Kamal won the game which end after 23 moves.