Chess puzzle (Checkmate)
Opening: French_Defense, French_Defense_Paulsen_Variation
Moves: 1. e4 e6 2. d4 d5 3. Nc3 Nc6 4. Bb5 Bd7 5. exd5 exd5 6. Nxd5 Nxd4 7. Bxd7+ Qxd7
8. Qxd4 O-O-O 9. c4 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 Nf6 12. O-O-O Qa4 13. Ne7+ Kb8
14. Qxd8+ Rxd8 *
Position (FEN): 1k1r4/ppp1Nppp/5n2/8/q1P5/8/PP3PPP/2KR2NR w - - 0 15
White to move.
Themes:  Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 908
Best move: Rxd8#