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The database has an alternate game score for the game:
Polugaevsky vs Korchnoi, 1977

This is the alternate game score (some differences are highlighted in red):

[Event "Evian csf ,CAND"]
[Site "Evian csf ,CAND"]
[Date "1977.??.??"]
[EventDate "?"]
[Round "06"]
[Result "0-1"]
[White "L Polugaevsky"]
[Black "V Kortchnoi"]
[ECO "A40"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "130"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. Qc2 Qh4 5. Nd2 Bb4 6. Bd3 f5 7. Ngf3
Bxd2+ 8. Kf1 Qh5 9. Bxd2 Nf6 10. exf5 Bxf3 11. gxf3 Nc6 12. Bc3 O-O
13. Re1 Qh3+ 14. Ke2 Rae8 15. Kd1 e5 16. dxe5 Nxe5 17. Be2 Nxf3 18. Qd3
Rxe2 19. Rxe2 Qg2 20. Rhe1 Nxe1 21. Kxe1 Qxh2 22. Re7 Qg1+ 23. Ke2 Qg4+
24. Ke1 h5 25. Qg3 Qxg3 26. fxg3 Rf7 27. Bxf6 gxf6 28. Re8+ Kh7 29. Kf2
Kh6 30. b4 Kg5 31. Ra8 Kxf5 32. Rxa7 d6 33. a4 Ke6 34. a5 bxa5 35. Rxa5
f5 36. c5 Rh7 37. cxd6 cxd6 38. b5 h4 39. gxh4 Rxh4 40. Ra8 Rb4 41. Rb8
Kd5 42. Kf3 Rb3+ 43. Kf4 Kc5 44. Rc8+ Kxb5 45. Kxf5 Re3 46. Kf4 Re1
47. Rd8 Kc5 48. Rc8+ Kd4 49. Kf3 d5 50. Kf2 Re5 51. Ra8 Kc3 52. Ra3+
Kb4 53. Ra1 d4 54. Rc1 d3 55. Rc8 d2 56. Rb8+ Kc3 57. Rc8+ Kd3 58. Rd8+
Kc2 59. Rc8+ Kd1 60. Rc7 Rf5+ 61. Kg2 Ke2 62. Re7+ Kd3 63. Rd7+ Ke3
64. Re7+ Kd4 65. Rd7+ Rd5 0-1

The table below highlights the difference(s)
between the current score and the alternate:

 original  alternate
1.d41.d4
 e6 e6
2.c42.c4
 b6 b6
3.e43.e4
 Bb7 Bb7
4.Qc24.Qc2
 Qh4 Qh4
5.Nd25.Nd2
 Bb4 Bb4
6.Bd36.Bd3
 f5 f5
7.Nf37.Ngf3
 Bxd2+ Bxd2+
8.Kf18.Kf1
 Qh5 Qh5
9.Bxd29.Bxd2
 Nf6 Nf6
10.exf510.exf5
 Bxf3 Bxf3
11.gxf311.gxf3
 Nc6 Nc6
12.Bc312.Bc3
 O-O O-O
13.Re113.Re1
 Qh3+ Qh3+
14.Ke214.Ke2
 Rae8 Rae8
15.Kd115.Kd1
 e5 e5
16.dxe516.dxe5
 Nxe5 Nxe5
17.Be217.Be2
 Nxf3 Nxf3
18.Qd318.Qd3
 Rxe2 Rxe2
19.Rxe219.Rxe2
 Qg2 Qg2
20.Rhe120.Rhe1
 Nxe1 Nxe1
21.Kxe121.Kxe1
 Qxh2 Qxh2
22.Re722.Re7
 Qg1+ Qg1+
23.Ke223.Ke2
 Qg4+ Qg4+
24.Ke124.Ke1
 h5 h5
25.Qg325.Qg3
 Qxg3 Qxg3
26.fxg326.fxg3
 Rf7 Rf7
27.Bxf627.Bxf6
 gxf6 gxf6
28.Re8+28.Re8+
 Kg7 Kh7
29.Kf229.Kf2
 Kh6 Kh6
30.b430.b4
 Kg5 Kg5
31.Ra831.Ra8
 Kxf5 Kxf5
32.Rxa732.Rxa7
 d6 d6
33.a433.a4
 Ke6 Ke6
34.a534.a5
 bxa5 bxa5
35.Rxa535.Rxa5
 f5 f5
36.c536.c5
 Rh7 Rh7
37.cxd637.cxd6
 cxd6 cxd6
38.b538.b5
 h4 h4
39.gxh439.gxh4
 Rxh4 Rxh4
40.Ra840.Ra8
 Rb4 Rb4
41.Rb841.Rb8
 Kd5 Kd5
42.Kf342.Kf3
 Rb3+ Rb3+
43.Kf443.Kf4
 Kc5 Kc5
44.Rc8+44.Rc8+
 Kxb5 Kxb5
45.Kxf545.Kxf5
 Re3 Re3
46.Kf446.Kf4
 Re1 Re1
47.Rd847.Rd8
 Kc5 Kc5
48.Rc8+48.Rc8+
 Kd4 Kd4
49.Kf349.Kf3
 d5 d5
50.Kf250.Kf2
 Re5 Re5
51.Ra851.Ra8
 Kc3 Kc3
52.Ra3+52.Ra3+
 Kb4 Kb4
53.Ra153.Ra1
 d4 d4
54.Rc154.Rc1
 d3 d3
55.Rc855.Rc8
 d2 d2
56.Rb8+56.Rb8+
 Kc3 Kc3
57.Rc8+57.Rc8+
 Kd3 Kd3
58.Rd8+58.Rd8+
 Kc2 Kc2
59.Rc8+59.Rc8+
 Kd1 Kd1
60.0-160.Rc7
 Rf5+
61.Kg2
 Ke2
62.Re7+
 Kd3
63.Rd7+
 Ke3
64.Re7+
 Kd4
65.Rd7+
 Rd5
66.0-1