Chess puzzle (Equality)
Moves: 1. d4 d5 2. Nf3 Nc6 3. Bf4 Nf6 4. Nc3 Bf5 5. Qd2 e6 6. O-O-O Bb4 7. Bg5 O-O 8.
a3 Be7 9. h4 h6 10. Be3 Ne4 11. Nxe4 Bxe4 12. g4 Bxf3 *
Position (FEN): r2q1rk1/ppp1bpp1/2n1p2p/3p4/3P2PP/P3Bb2/1PPQPP2/2KR1B1R w - - 0 13
White to move.
Themes:  Opening  
Puzzle rating: 1091
Best move: exf3