Chess puzzle (Checkmate)
Opening: Lion_Defense, Lion_Defense_Anti-Philidor
Moves: 1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. f4 e5 5. dxe5 dxe5 6. fxe5 Nxe5 7. Qxd8+ Kxd8
8. Bg5 Be6 9. O-O-O+ Kc8 10. Nf3 Nfd7 11. Nxe5 Nxe5 *
Position (FEN): r1k2b1r/ppp2ppp/4b3/4n1B1/4P3/2N5/PPP3PP/2KR1B1R w - - 0 12
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 822
Best move: Rd8#