Chess puzzle (Advantage)
Opening: Kings_Pawn_Game, Kings_Pawn_Game_Leonardis_Variation
Moves: 1. d3 e5 2. e4 Nf6 3. f3 d5 4. Qe2 Bc5 5. Nc3 Bb4 6. Bd2 O-O 7. a3 Bxc3 8. Bxc3
Nc6 9. h3 dxe4 10. fxe4 Be6 11. O-O-O Nd4 12. Qf2 c5 13. Nf3 b5 14. Nxe5 a5 15.
Nf3 Nxf3 16. gxf3 b4 17. axb4 *
Position (FEN): r2q1rk1/5ppp/4bn2/p1p5/1P2P3/2BP1P1P/1PP2Q2/2KR1B1R b - - 0 17
Black to move.
Themes:  Middlegame  
Puzzle rating: 1063
Best move: axb4