Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Old_Sicilian
Moves: 1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 4. Bc4 a6 5. d3 b5 6. Bb3 Bb7 7. Be3 Nf6 8. a3
Be7 9. d4 cxd4 10. Nxd4 O-O 11. O-O Rc8 12. f4 Nxd4 13. Bxd4 Nxe4 14. Nxe4 Bxe4
15. c3 d5 16. Bc2 Bg6 17. f5 exf5 18. Bxf5 Rc6 19. Qg4 Bxf5 *
Position (FEN): 3q1rk1/4bppp/p1r5/1p1p1b2/3B2Q1/P1P5/1P4PP/R4RK1 w - - 0 20
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 986
Best move: Qxg7#