Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Closed
Moves: 1. e4 c5 2. Nc3 Nc6 3. Bb5 a6 4. Bxc6 bxc6 5. f4 d5 6. e5 e6 7. Nf3 Ne7 8. d3
Nf5 9. O-O Nh4 10. Qe1 Nxf3+ 11. Rxf3 Qb6 12. Kh1 Be7 13. h3 O-O 14. g4 d4 15.
Ne4 Bb7 16. g5 c4 17. Nf6+ gxf6 18. gxf6 c5 19. Qg3+ Kh8 *
Position (FEN): r4r1k/1b2bp1p/pq2pP2/2p1P3/2pp1P2/3P1RQP/PPP5/R1B4K w - - 2 20
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 879
Best move: Qg7#