Chess puzzle (Equality)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. dxe5 dxe5 7. Re1 a6 8.
Bf1 Bg4 9. h3 Bh5 10. Nc3 Bd6 11. Bg5 O-O 12. Nd5 Nd4 13. Nxf6+ *
Position (FEN): r2q1rk1/1pp2ppp/p2b1N2/4p1Bb/3nP3/5N1P/PPP2PP1/R2QRBK1 b - - 0 13
Black to move.
Themes:  Opening  
Puzzle rating: 1413
Best move: gxf6