named after 18th century player Francois Andre Danican-Philidor
black's positioning: pawn on g7, pawn on h7, rook on f8, king on g8.
white's positioning: queen on e8, knight on g5, king on g1.
white to move:
1. Qc6+ . . . Kh8
2. Nf7 . . . Kg8
3. Nh6+ . . . Kh8
4. Qg8+ . . . Rxg8
this is also an example of a Smothered Mate.