Chess puzzle (Checkmate)
Moves: 1. d4 Nf6 2. Nc3 d5 3. Bg5 Bf5 4. f3 c6 5. Qd2 Nbd7 6. h4 Qa5 7. g4 Be6 8. Nh3
Nb6 9. Nf4 Nc4 10. Qc1 Bd7 11. Nd3 e6 12. a3 Bd6 13. b4 Qc7 14. Bh3 h6 15. Bf4
g5 16. Bxd6 Qxd6 17. hxg5 Qg3+ 18. Nf2 hxg5 19. Qxg5 Ke7 20. Nd1 Rag8 21. Qc1
Rxh3 22. Rxh3 *
Position (FEN): 6r1/pp1bkp2/2p1pn2/3p4/1PnP2P1/P4PqR/2P1PN2/R1QNK3 b Q - 0 22
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1169
Best move: Qg1#