Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Chekhover_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 e5 5. Qd2 Bg4 6. h3 Bxf3 7. gxf3 Nf6 8.
c4 Nc6 9. Qe2 Nd4 10. Qd3 Qa5+ 11. Nc3 Be7 12. Be3 Nxf3+ 13. Ke2 Nd4+ 14. Kd2
Nf3+ 15. Ke2 Nd4+ 16. Bxd4 exd4 17. Qxd4 O-O 18. Rg1 Rfd8 19. Nd5 Nxd5 *
Position (FEN): r2r2k1/pp2bppp/3p4/q2n4/2PQP3/7P/PP2KP2/R4BR1 w - - 0 20
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 1453
Best move: Qxg7#