Chess puzzle (Checkmate)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_Kennedy_Variation
Moves: 1. e4 e5 2. d4 Nc6 3. dxe5 Nxe5 4. f4 Ng6 5. Nf3 Nf6 6. Bd3 Bc5 7. Nc3 Ng4 8.
Rf1 Nh4 9. Qe2 d6 10. h3 Nxf3+ 11. Rxf3 Qh4+ 12. Kf1 *
Position (FEN): r1b1k2r/ppp2ppp/3p4/2b5/4PPnq/2NB1R1P/PPP1Q1P1/R1B2K2 b kq - 2 12
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 990
Best move: Nh2#