Chess puzzle (Advantage)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Busch-Gass_Gambit
Moves: 1. e4 e5 2. Nf3 Bc5 3. d4 exd4 4. Nxd4 Qh4 5. Be3 Qxe4 6. Nc3 Qe5 7. Nf3 Qe7 8.
Nd5 Qd6 9. Bxc5 Qxc5 10. Qd4 Qxd4 11. Nxd4 Na6 *
Position (FEN): r1b1k1nr/pppp1ppp/n7/3N4/3N4/8/PPP2PPP/R3KB1R w KQkq - 1 12
White to move.
Themes:  Middlegame  
Puzzle rating: 1251
Best move: Bxa6