Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Bd3 e5 7. O-O Nf6 8.
Nd2 Be7 9. b3 O-O 10. Bb2 Bb7 11. Rb1 h6 12. Nf3 Rb8 13. Nh4 Nxe4 14. Nf5 Nf6
15. Qf3 d5 16. Qg3 Nh5 17. Qxe5 Bf6 18. Nxh6+ gxh6 19. Qxh5 Bxb2 20. Qxh6 Bg7 *
Position (FEN): 1r1q1rk1/pb3pb1/2p4Q/3p4/8/1P1B4/P1P2PPP/1R3RK1 w - - 1 21
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 863
Best move: Qh7#