Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Zukertort_Variation
Moves: 1. Nf3 d5 2. d4 Bf5 3. c4 e6 4. a3 Nf6 5. Nc3 dxc4 6. Bg5 c5 7. e4 Bg6 8. e5 h6
*
Position (FEN): rn1qkb1r/pp3pp1/4pnbp/2p1P1B1/2pP4/P1N2N2/1P3PPP/R2QKB1R w KQkq - 0 9
White to move.
Themes:  Middlegame  
Puzzle rating: 2092
Best move: Bh4