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. Bxc6 dxc6 6. Nxe5 Nxe4 7. Qf3 Nf6
8. Re1 O-O 9. c3 Bg4 *
Position (FEN): r2q1rk1/ppp2ppp/2p2n2/2b1N3/6b1/2P2Q2/PP1P1PPP/RNB1R1K1 w - - 1 10
White to move.
Themes:  Opening  
Puzzle rating: 968
Best move: Nxg4