Chess puzzle (Equality)
Moves: 1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. O-O e5 5. d3 f5 6. Nbd2 Nf6 7. c4 d4 8. e4
fxe4 9. dxe4 Bd6 10. Re1 O-O 11. Nh4 Ng4 12. Nf5 Bxf5 *
Position (FEN): r2q1rk1/pp4pp/2nb4/2p1pb2/2PpP1n1/6P1/PP1N1PBP/R1BQR1K1 w - - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 1161
Best move: exf5