Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nc3 d5 3. Bg5 g6 4. Nf3 Bg7 5. Qd2 O-O 6. Bh6 c5 7. Bxg7 Kxg7 8.
h4 Nc6 9. h5 cxd4 10. Nxd4 e5 11. Nxc6 bxc6 12. hxg6 fxg6 13. Qh6+ Kg8 14. g3
Rf7 15. Bh3 Bxh3 16. Rxh3 Ng4 17. Qd2 Nxf2 18. Rh4 Qb6 19. b3 Ne4 20. Nxe4 *
Position (FEN): r5k1/p4r1p/1qp3p1/3pp3/4N2R/1P4P1/P1PQP3/R3K3 b Q - 0 20
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1097
Best move: Qg1#