Chess puzzle (Crushing)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 Bd7 6. O-O Be7 7. c4 b5 8. Bb3
bxc4 9. Bxc4 Nf6 10. Re1 O-O 11. Nc3 Bg4 12. dxe5 Nxe5 13. Be2 Nxf3+ 14. Bxf3
Bxf3 15. Qxf3 Re8 16. Bg5 Qd7 17. Rad1 Qg4 18. Qxg4 Nxg4 19. Bxe7 Rxe7 20. Nd5
Rd7 21. h3 Ne5 22. f4 Nc4 23. b3 Nb6 24. Nb4 c5 25. Nd5 Rb8 26. Kf2 f6 27. Kf3
Kf7 28. g4 Nxd5 29. Rxd5 Ke6 30. Red1 Rb6 31. f5+ Ke7 32. Kf4 a5 33. h4 Rb4 34.
R1d3 a4 35. a3 Rxb3 36. Rxb3 *
Position (FEN): 8/3rk1pp/3p1p2/2pR1P2/p3PKPP/PR6/8/8 b - - 0 36
Black to move.
Themes:  Endgame, Rook Endgame  
Puzzle rating: 1400
Best move: axb3