Chess puzzle (Advantage)
Opening: Vienna_Game, Vienna_Game_Max_Lange_Defense
Moves: 1. e4 e5 2. Nc3 Nc6 3. Bc4 d6 4. Nf3 Nf6 5. d3 Be7 6. h3 O-O 7. Bg5 h6 8. Bh4
a6 9. g4 b5 10. Bb3 Na5 11. g5 Nh5 12. gxh6 *
Position (FEN): r1bq1rk1/2p1bpp1/p2p3P/np2p2n/4P2B/1BNP1N1P/PPP2P2/R2QK2R b KQ - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1049
Best move: Bxh4