1.
e4
c5
2.
Nf3
Nc6
3.
d4
cxd4
4.
Nxd4
Nf6
5.
Nc3
d6
6.
Be3
Bd7
7.
Be2
g6
8.
f3
Bg7
9.
Qd2
O-O
10.
O-O-O
Nxd4
11.
Bxd4
Qa5
12.
Kb1
Rfc8
13.
g4
Be6
14.
a3
Bc4
15.
g5
Ne8
16.
Bxg7
Nxg7
17.
Bxc4
Rxc4
18.
Nd5
Qxd2
19.
Rxd2
Kf8
20.
h4
Nh5
21.
b3
Rc5
22.
Kb2
b5
23.
Rc1
a5
24.
a4
b4
25.
Nb6
Ra7
26.
Rd5
Rxd5
27.
Nxd5
e6
28.
Ne3
Ke7
29.
Rd1
f5
30.
gxf6+
Nxf6
31.
c3
bxc3+
32.
Kxc3
Nd7
33.
Nc4
Ra6
34.
b4
axb4+
35.
Kxb4
Rc6
36.
a5
Nb8
37.
Rd2
Na6+
38.
Kb5
Nb8
39.
Rc2
Rc5+
40.
Ka4
Nc6
41.
a6
d5
42.
exd5
exd5
43.
Ne3
Ra5+
44.
Kb3
Kd6
45.
Rd2
Ke6
46.
h5
g5
47.
Rg2
d4
48.
Nc4
Rb5+
49.
Kc2
Nb4+
50.
Kd2
Nxa6
51.
Kd3
Rd5
52.
Re2+
Kf6
53.
Nd2
Rd7
54.
Ne4+
Kf5
55.
Rg2
h6
56.
Rb2
Nc7
57.
Rb6
Ne6
58.
Rxe6
1/2-1/2
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Event
Site
Wageningen
Date
1957.11.14
Round
11
White
Black
Alster, Ladislav
Result
1/2-1/2
Score
[Event "Wageningen Zonal"] [Site "Wageningen"] [Date "1957.11.14"] [Round "11"] [White "Ivkov, Borislav"] [Black "Alster, Ladislav"] [Result "1/2-1/2"] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 Bd7 7. Be2 g6 8. f3 Bg7 9. Qd2 O-O 10. O-O-O Nxd4 11. Bxd4 Qa5 12. Kb1 Rfc8 13. g4 Be6 14. a3 Bc4 15. g5 Ne8 16. Bxg7 Nxg7 17. Bxc4 Rxc4 18. Nd5 Qxd2 19. Rxd2 Kf8 20. h4 Nh5 21. b3 Rc5 22. Kb2 b5 23. Rc1 a5 24. a4 b4 25. Nb6 Ra7 26. Rd5 Rxd5 27. Nxd5 e6 28. Ne3 Ke7 29. Rd1 f5 30. gxf6+ Nxf6 31. c3 bxc3+ 32. Kxc3 Nd7 33. Nc4 Ra6 34. b4 axb4+ 35. Kxb4 Rc6 36. a5 Nb8 37. Rd2 Na6+ 38. Kb5 Nb8 39. Rc2 Rc5+ 40. Ka4 Nc6 41. a6 d5 42. exd5 exd5 43. Ne3 Ra5+ 44. Kb3 Kd6 45. Rd2 Ke6 46. h5 g5 47. Rg2 d4 48. Nc4 Rb5+ 49. Kc2 Nb4+ 50. Kd2 Nxa6 51. Kd3 Rd5 52. Re2+ Kf6 53. Nd2 Rd7 54. Ne4+ Kf5 55. Rg2 h6 56. Rb2 Nc7 57. Rb6 Ne6 58. Rxe6 1/2-1/2