Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_French_Variation
Moves: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 Nc6 6. c3 d5 7. exd5 Nxd4 8.
cxd4 Bb4+ 9. Nc3 Bxc3+ 10. bxc3 Nxd5 11. O-O O-O 12. c4 Nb4 13. Bb1 Qf6 14. Bb2
Bd7 15. Qb3 Nc6 16. d5 Nd4 17. Qd3 Nf3+ 18. gxf3 Qxb2 *
Position (FEN): r4rk1/pp1b1ppp/4p3/3P4/2P5/3Q1P2/Pq3P1P/RB3RK1 w - - 0 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 456
Best move: Qxh7#