Chess puzzle (Checkmate)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Exchange_Variation
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Nf3 Bb4 6. a3 Bxc3+ 7. bxc3 b5 8.
e3 Bg4 9. Bxb5+ c6 10. Ba4 Ne4 11. Bb2 Qf6 12. Qb3 O-O 13. Ne5 *
Position (FEN): rn3rk1/p4ppp/2p2q2/3pN3/B2Pn1b1/PQP1P3/1B3PPP/R3K2R b KQ - 7 13
Black to move.
Themes: Attacking f2 or f7 Middlegame Mate in 1 
Puzzle rating: 738
Best move: Qxf2#