Chess puzzle (Equality)
Moves: 1. d4 d5 2. Bg5 g6 3. e3 Bg7 4. c3 Nf6 5. f3 O-O 6. Bd3 Nc6 7. Ne2 e5 8. O-O
exd4 9. Nxd4 Qd6 10. Bf4 Ne5 11. Nb5 Qe7 12. Re1 c6 13. Nd4 Nh5 14. Na3 Nxf4 *
Position (FEN): r1b2rk1/pp2qpbp/2p3p1/3pn3/3N1n2/N1PBPP2/PP4PP/R2QR1K1 w - - 0 15
White to move.
Themes:  Middlegame  
Puzzle rating: 1440
Best move: exf4