Chess puzzle (Checkmate)
Opening: Nimzo-Indian_Defense, Nimzo-Indian_Defense_Other_variations
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 d5 5. a3 Be7 6. e3 O-O 7. Nf3 b6 8. cxd5
exd5 9. Bb5 Ba6 10. Bxa6 Nxa6 11. Ne5 Nb8 12. Qa4 Qd6 13. Rc1 c5 14. Nb5 Qd8
15. dxc5 Bxc5 16. Bc3 Ne4 17. Rd1 Qf6 18. Nc7 *
Position (FEN): rn3rk1/p1N2ppp/1p3q2/2bpN3/Q3n3/P1B1P3/1P3PPP/3RK2R b K - 5 18
Black to move.
Themes: Attacking f2 or f7 Middlegame Mate in 1 
Puzzle rating: 1194
Best move: Qxf2#