Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Najdorf_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3
h6 9. Bxf6 Bxf6 10. O-O-O Qc7 11. g4 g5 12. Bg2 Nc6 13. Nxc6 Qxc6 14. h4 Bxc3
15. bxc3 gxf4 16. Qxf4 e5 17. Qf6 Rg8 18. Rxd6 Qxc3 *
Position (FEN): r1b1k1r1/1p3p2/p2R1Q1p/4p3/4P1PP/2q5/P1P3B1/2K4R w q - 0 19
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 761
Best move: Rd8#