Chess puzzle (Checkmate)
Opening: Nimzo-Larsen_Attack, Nimzo-Larsen_Attack_Other_variations
Moves: 1. b3 f6 2. Bb2 e5 3. e3 g6 4. d4 Nc6 5. dxe5 Nxe5 6. Nf3 Bd6 7. Nxe5 Bxe5 8.
Bxe5 fxe5 9. Nd2 Qf6 10. Nc4 Ne7 11. Be2 d5 12. Nd2 O-O 13. c4 *
Position (FEN): r1b2rk1/ppp1n2p/5qp1/3pp3/2P5/1P2P3/P2NBPPP/R2QK2R b KQ - 0 13
Black to move.
Themes: Attacking f2 or f7 Middlegame Mate in 1 
Puzzle rating: 841
Best move: Qxf2#