Chess puzzle (Advantage)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Tayler_Opening
Moves: 1. e4 e5 2. Nf3 Nc6 3. Be2 Bc5 4. O-O Nf6 5. d3 Ng4 6. a3 d6 7. b4 Bb6 8. Nc3
a5 9. b5 Nd4 10. Nxd4 Bxd4 11. Nd5 Bxa1 12. Bxg4 Bxg4 *
Position (FEN): r2qk2r/1pp2ppp/3p4/pP1Np3/4P1b1/P2P4/2P2PPP/b1BQ1RK1 w kq - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 868
Best move: Qxg4