Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Modern_Variations
Moves: 1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. d3 e6 5. Bg5 Be7 6. O-O a6 7. c3 O-O 8. Re1 b5
9. Bb3 Bb7 10. Nbd2 Nc6 11. Nf1 Na5 12. Bc2 h6 13. Bh4 d5 14. e5 Nd7 15. Bxe7
Qxe7 16. d4 cxd4 17. Qd3 dxc3 *
Position (FEN): r4rk1/1b1nqpp1/p3p2p/np1pP3/8/2pQ1N2/PPB2PPP/R3RNK1 w - - 0 18
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 525
Best move: Qh7#