Chess puzzle (Checkmate)
Opening: Old_Indian_Defense, Old_Indian_Defense_Janowski_Variation
Moves: 1. d4 d6 2. c4 Nf6 3. Nc3 Bf5 4. Nf3 e6 5. b3 Be7 6. Bb2 O-O 7. e3 Ne4 8. Bd3
Nxc3 9. Bxc3 Bxd3 10. Qxd3 Bf6 11. h4 c5 12. Ng5 g6 13. f4 Nc6 14. h5 Bxg5 15.
hxg6 Bf6 16. g7 Bxg7 *
Position (FEN): r2q1rk1/pp3pbp/2npp3/2p5/2PP1P2/1PBQP3/P5P1/R3K2R w KQ - 0 17
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 470
Best move: Qxh7#