Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2
Nc6 9. O-O-O d5 10. Nxc6 bxc6 11. exd5 cxd5 12. Nxd5 Nxd5 13. Qxd5 Qc7 14. Qxa8
Bf5 15. Qxf8+ Kxf8 16. Bd3 Qe5 17. Bxf5 Qxe3+ 18. Kb1 gxf5 *
Position (FEN): 5k2/p3ppbp/8/5p2/8/4qP2/PPP3PP/1K1R3R w - - 0 19
White to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 623
Best move: Rd8#