Chess puzzle (Advantage)
Opening: Slav_Defense, Slav_Defense_Modern_Line
Moves: 1. d4 c6 2. c4 d5 3. Nf3 Nf6 4. g3 dxc4 5. Qc2 b5 6. a4 Bb7 7. Nc3 a6 8. Bg2
Nd5 9. b3 cxb3 10. Qxb3 e6 11. Ne5 Qa5 12. Bd2 Bb4 13. Bxd5 cxd5 14. O-O O-O *
Position (FEN): rn3rk1/1b3ppp/p3p3/qp1pN3/Pb1P4/1QN3P1/3BPP1P/R4RK1 w - - 2 15
White to move.
Themes:  Middlegame  
Puzzle rating: 1438
Best move: axb5