Chess puzzle (Crushing)
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 Nxd5 5. e3 Bb4 6. Bd2 b6 7. Nxd5 Bxd2+ 8.
Qxd2 Qxd5 9. Nf3 O-O 10. Bd3 c5 11. e4 Qd6 12. dxc5 Qxc5 13. O-O Nc6 14. Rac1
Qd6 15. a3 Bb7 16. Rfe1 Rfd8 17. Bb5 Rac8 18. Qxd6 Rxd6 19. e5 Rd5 20. a4 h6
21. h3 a6 22. Bc4 Rc5 23. b3 Na5 24. Nd2 Bd5 25. Rb1 Bxc4 26. bxc4 Nxc4 27.
Nxc4 Rxc4 28. Rxb6 Rxa4 29. Reb1 Ra5 30. f4 Kh7 31. Rb7 Kg6 32. g4 f5 33. exf6
gxf6 34. R7b6 Re8 35. Re1 Kf7 36. Kf2 Ra3 37. Kg2 a5 38. Rb7+ Re7 39. Rb8 Re8
40. Rxe8 Kxe8 41. Rxe6+ Kf7 42. f5 a4 43. Ra6 Ra1 44. Ra7+ Kg8 45. Kf2 a3 46.
Ke2 *
Position (FEN): 6k1/R7/5p1p/5P2/6P1/p6P/4K3/r7 b - - 1 46
Black to move.
Themes: Advanced Pawn Endgame, Rook Endgame  
Puzzle rating: 1500
Best move: a2