Chess puzzle (Advantage)
Opening: Ruy_Lopez, Ruy_Lopez_Cozio_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. O-O a6 5. Ba4 b5 6. Bb3 h6 7. d4 exd4 8.
Nxd4 Bb7 9. c3 Ng6 10. Qf3 Nce5 11. Qf5 c5 12. f4 c4 *
Position (FEN): r2qkb1r/1b1p1pp1/p5np/1p2nQ2/2pNPP2/1BP5/PP4PP/RNB2RK1 w kq - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 1450
Best move: fxe5