Chess puzzle (Advantage)
Opening: Queens_Gambit_Accepted, Queens_Gambit_Accepted_Central_Variation
Moves: 1. d4 d5 2. c4 dxc4 3. e4 b5 4. a4 Bd7 5. Nc3 c6 6. Nf3 e6 7. Bg5 Qa5 8. Ne5 f6
9. Nxd7 Nxd7 10. Be3 Bb4 11. Qc2 Bxc3+ 12. bxc3 Ne7 13. Be2 O-O 14. O-O Nb6 *
Position (FEN): r4rk1/p3n1pp/1np1pp2/qp6/P1pPP3/2P1B3/2Q1BPPP/R4RK1 w - - 5 15
White to move.
Themes:  Middlegame  
Puzzle rating: 1459
Best move: axb5