Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. c3 d6 4. d4 cxd4 5. cxd4 e5 6. d5 Nce7 7. Nc3 f5 8. Bd3
f4 9. O-O Nf6 10. Bd2 Ng6 11. h3 h6 12. Rc1 Be7 13. Qb3 O-O 14. Kh2 Nh5 15. Rg1
Nh4 16. Nxe5 Kh8 17. Nf3 Qd7 18. e5 Nxf3+ 19. gxf3 *
Position (FEN): r1b2r1k/pp1qb1p1/3p3p/3PP2n/5p2/1QNB1P1P/PP1B1P1K/2R3R1 b - - 0 19
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 909
Best move: Qxh3#