Chess puzzle (Crushing)
Moves: 1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. Nd5 e6 5. Nxf6+ Qxf6 6. e3 d5 7. Rb1 Bd6 8.
d4 cxd4 9. Nxd4 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 Nxd4 12. Qxd4 Qxd4 13. exd4 O-O 14.
c5 Bd7 15. Bd3 b6 16. b4 bxc5 17. bxc5 Rab8 18. O-O a5 19. a4 Rb4 20. Bb5 Bxb5
*
Position (FEN): 5rk1/5ppp/4p3/pbPp4/Pr1P4/8/5PPP/1R3RK1 w - - 0 21
White to move.
Themes:  Endgame  
Puzzle rating: 1331
Best move: axb5