Chess puzzle (Crushing)
Opening: Ruy_Lopez, Ruy_Lopez_Berlin_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. Nc3 a6 6. Ba4 b5 7. Bb3 h6 8. O-O
d6 9. h3 g5 10. Nd5 g4 11. Nxf6+ Qxf6 12. hxg4 *
Position (FEN): r1b1k2r/2p2p2/p1np1q1p/1pb1p3/4P1P1/1B1P1N2/PPP2PP1/R1BQ1RK1 b kq - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1280
Best move: Bxg4