Chess puzzle (Checkmate)
Opening: Old_Indian_Defense, Old_Indian_Defense_Czech_Variation
Moves: 1. d4 d6 2. c4 c6 3. Nc3 Nf6 4. Nf3 Qa5 5. Bd2 Qc7 6. e4 e5 7. Bg5 Be7 8. Bd3
a6 9. O-O Ng4 10. Bxe7 Qxe7 11. h3 h5 12. dxe5 dxe5 13. hxg4 hxg4 14. Re1 gxf3
15. Qxf3 Qh4 16. Kf1 Bg4 17. Qg3 *
Position (FEN): rn2k2r/1p3pp1/p1p5/4p3/2P1P1bq/2NB2Q1/PP3PP1/R3RK2 b kq - 4 17
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 818
Best move: Qh1#