Chess puzzle (Advantage)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Zukertort_Variation
Moves: 1. d4 d5 2. Nf3 h5 3. Bf4 g6 4. e3 Bg7 5. Nbd2 a6 6. c4 dxc4 7. Bxc4 e6 8. Qa4+
Bd7 9. Qc2 Ne7 10. Bd3 Nbc6 11. a3 Bf6 12. Ng5 Bxg5 *
Position (FEN): r2qk2r/1ppbnp2/p1n1p1p1/6bp/3P1B2/P2BP3/1PQN1PPP/R3K2R w KQkq - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 868
Best move: Bxg5