Chess puzzle (Advantage)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. d4 Be6 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Nxe5 Bd6 7. Nf3 Bg4
8. Be2 Bxf3 9. Bxf3 Nf6 10. O-O Be5 11. Rd1+ Kc8 12. Bg4+ *
Position (FEN): rnk4r/ppp2ppp/5n2/4b3/4P1B1/8/PPP2PPP/RNBR2K1 b - - 6 12
Black to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 694
Best move: Nxg4