Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Berlin_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. Nc3 O-O 6. d3 a6 7. Bxc6 dxc6 8.
Nxe5 Bd6 9. Nf3 Bg4 10. h3 Bh5 11. g4 Nxg4 12. hxg4 Bxg4 13. Kg2 f5 14. Rg1 *
Position (FEN): r2q1rk1/1pp3pp/p1pb4/5p2/4P1b1/2NP1N2/PPP2PK1/R1BQ2R1 b - - 1 14
Black to move.
Themes:  Middlegame  
Puzzle rating: 1763
Best move: fxe4