Chess puzzle (Checkmate)
Opening: Nimzo-Indian_Defense, Nimzo-Indian_Defense_Spielmann_Variation
Moves: 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Qb3 a5 5. a3 Be7 6. Nf3 Nc6 7. Bf4 b6 8. Nb5
d6 9. c5 bxc5 10. dxc5 O-O 11. cxd6 cxd6 12. Rd1 Qb6 13. Bxd6 Ne4 14. Bxe7 *
Position (FEN): r1b2rk1/4Bppp/1qn1p3/pN6/4n3/PQ3N2/1P2PPPP/3RKB1R b K - 0 14
Black to move.
Themes: Attacking f2 or f7 Middlegame Mate in 1 
Puzzle rating: 1419
Best move: Qxf2#