Chess puzzle (Advantage)
Opening: Horwitz_Defense, Horwitz_Defense_Other_variations
Moves: 1. d4 e6 2. Nc3 a6 3. a3 Nf6 4. Bg5 h6 5. Nf3 *
Position (FEN): rnbqkb1r/1ppp1pp1/p3pn1p/6B1/3P4/P1N2N2/1PP1PPPP/R2QKB1R b KQkq - 1 5
Black to move.
Themes:  Opening  
Puzzle rating: 1020
Best move: hxg5