Chess puzzle (Checkmate)
Opening: Alekhine_Defense, Alekhine_Defense_Modern_Variation
Moves: 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. Nxe5 c6 6. Be2 Nd7 7. O-O Nxe5 8.
dxe5 Bf5 9. c4 Nc7 10. Nc3 Qxd1 11. Rxd1 Rd8 12. Be3 Rxd1+ 13. Rxd1 a6 14. Bb6
Ne6 15. g4 Bg6 16. f4 Nxf4 *
Position (FEN): 4kb1r/1p2pppp/pBp3b1/4P3/2P2nP1/2N5/PP2B2P/3R2K1 w k - 0 17
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 917
Best move: Rd8#