Chess puzzle (Advantage)
Opening: Kings_Gambit_Accepted, Kings_Gambit_Accepted_Fischer_Defense
Moves: 1. e4 e5 2. f4 exf4 3. Nf3 d6 4. d3 g5 5. Kd2 Bg4 6. h4 f6 7. b3 Bg7 8. Bb2 Qe7
9. Na3 Nd7 10. Nb5 O-O-O 11. Nxa7+ Kb8 12. Nb5 Ne5 13. Be2 Nxf3+ 14. Bxf3 Bd7
15. a4 Bxb5 *
Position (FEN): 1k1r2nr/1pp1q1bp/3p1p2/1b4p1/P3Pp1P/1P1P1B2/1BPK2P1/R2Q3R w - - 0 16
White to move.
Themes:  Middlegame  
Puzzle rating: 946
Best move: axb5