Chess puzzle (Advantage)
Opening: Modern_Defense, Modern_Defense_Other_variations
Moves: 1. d4 g6 2. e3 Bg7 3. Nf3 d5 4. Be2 Nc6 5. a3 Nf6 6. O-O Bg4 7. h3 Qd7 *
Position (FEN): r3k2r/pppqppbp/2n2np1/3p4/3P2b1/P3PN1P/1PP1BPP1/RNBQ1RK1 w kq - 1 8
White to move.
Themes:  Middlegame  
Puzzle rating: 1640
Best move: hxg4