Chess puzzle (Advantage)
Moves: 1. e4 c5 2. Nf3 d6 3. Bc4 e6 4. Nc3 Nc6 5. d4 cxd4 6. Nxd4 Nf6 7. Nxc6 bxc6 8.
Bg5 Be7 9. O-O d5 10. exd5 cxd5 11. Bb5+ Bd7 12. Bxd7+ Qxd7 13. a3 O-O 14. b4
Rfc8 15. Ne2 Rc7 16. Rc1 Rac8 17. c3 Ne4 18. Bxe7 Qxe7 19. h3 Nxc3 20. Nxc3
Rxc3 21. Rxc3 Rxc3 22. Qa1 Qc7 23. a4 a6 24. b5 axb5 *
Position (FEN): 6k1/2q2ppp/4p3/1p1p4/P7/2r4P/5PP1/Q4RK1 w - - 0 25
White to move.
Themes:  Endgame  
Puzzle rating: 1458
Best move: axb5