Chess puzzle (Checkmate)
Opening: Rat_Defense, Rat_Defense_Small_Center_Defense
Moves: 1. e4 e6 2. d4 d6 3. Nf3 h6 4. Be2 Bd7 5. O-O Be7 6. Nc3 a6 7. d5 e5 8. h3 g5
9. Be3 h5 10. Nd2 Nf6 11. Bxg5 Ng4 12. Bxe7 Qxe7 13. f3 Nf6 14. f4 Bxh3 15.
gxh3 Ng4 16. f5 Qh4 17. Rf3 Rg8 18. Kf1 *
Position (FEN): rn2k1r1/1pp2p2/p2p4/3PpP1p/4P1nq/2N2R1P/PPPNB3/R2Q1K2 b q - 4 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 996
Best move: Nh2#