Chess puzzle (Equality)
Moves: 1. d4 Nf6 2. e3 Nc6 3. Bd3 e5 4. f4 e4 5. Be2 d5 6. Nc3 a6 7. Nb1 Bd6 8. Nd2
O-O 9. c4 Ne7 10. c5 Bxf4 *
Position (FEN): r1bq1rk1/1pp1nppp/p4n2/2Pp4/3Ppb2/4P3/PP1NB1PP/R1BQK1NR w KQ - 0 11
White to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1515
Best move: exf4