He trolled a world champion with this weird 1st move | Karpov vs Miles

Karpov plays 1.e4. Anthony Miles replies with 1...a6. The game was played in 1980 when Karpov was the world champion and considered as the best player.
So why did Miles decide to play 1.e4 a6? What was the final result? See in the following video!
Full game:
[Site: "Skara"]
[Date: "1980.01.20"]
White: "Karpov, Anatoly"
Black: "Miles, Anthony John"
1. e4 a6 2. d4 b5 3. Nf3 Bb7 4. Bd3 Nf6 5. Qe2 e6 6. a4 c5 7. dxc5 Bxc5 8. Nbd2 b4 9. e5 Nd5 10. Ne4 Be7 11. O-O?! Nc6 12. Bd2 Qc7 13. c4 bxc3 14. Nxc3 Nxc3 15. Bxc3 Nb4! 16. Bxb4 Bxb4 17. Rac1 Qb6 18. Be4 O-O 19. Ng5 h6 20. Bh7+?! Kh8 21. Bb1?! Be7 22. Ne4 Rac8 23. Qd3 Rxc1 24. Rxc1 Qxb2 25. Re1?! Qxe5 26. Qxd7 Bb4! 27. Re3 Qd5 28. Qxd5 Bxd5 29. Nc3 Rc8 30. Ne2 g5 31. h4 Kg7 32. hxg5 hxg5 33. Bd3 a5 34. Rg3 Kf6 35. Rg4 Bd6 36. Kf1 Be5 37. Ke1 Rh8 38. f4 gxf4 39. Nxf4 Bc6 40. Ne2 Rh1+ 41. Kd2 Rh2 42. g3 Bf3 43. Rg8 Rg2 44. Ke1 Bxe2 45. Bxe2 Rxg3 46. Ra8 Bc7

[@ranveermohitechess]

Will you dare to play 1...a6 against a world champion?
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