1.
Nf3
Nf6
2.
b3
d6
3.
d4
g6
4.
Bb2
Bg7
5.
g3
O-O
6.
Bg2
Nbd7
7.
O-O
e5
8.
dxe5
Ng4
9.
c4
dxe5
10.
h3
Nh6
11.
e4
Re8
12.
Nc3
c6
13.
Qd2
f6
14.
Rad1
Nf7
15.
Na4
Qe7
16.
Qc1
Bf8
17.
Ne1
Nb6
18.
Nc3
Ng5
19.
h4
Ne6
20.
Nc2
Qg7
21.
Ba3
Bxa3
22.
Qxa3
Qe7
23.
Qxe7
Rxe7
24.
Rd6
Kf7
25.
f4
exf4
26.
gxf4
Rd7
27.
Rxd7+
Bxd7
28.
Kh2
a5
29.
e5
fxe5
30.
fxe5+
Ke7
31.
Ne4
Rf8
32.
Rxf8
Kxf8
33.
Bh3
Nf4
34.
Bxd7
Nxd7
35.
Nd6
b6
36.
Nd4
Nxe5
37.
Nc8
c5
38.
Nb5
Nd7
39.
Nc3
Ke8
40.
Kg3
Nd3
41.
Na4
Nc1
42.
Ncxb6
Nxb6
43.
Nxb6
Ke7
44.
Kf4
Nxa2
45.
Na4
Kd6
46.
Kg5
Nc1
47.
Kh6
Nxb3
48.
Kxh7
Nd2
49.
Kxg6
Nxc4
50.
h5
Ne5+
51.
Kf5
Nf7
52.
Kg6
1/2-1/2
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Event
Site
Amsterdam
Date
1964.05.21
Round
2
White
Porat, Yosef
Black
Result
1/2-1/2
Score
[Event "Interzonal-06"] [Site "Amsterdam"] [Date "1964.05.21"] [Round "2"] [White "Porat, Yosef"] [Black "Ivkov, Borislav"] [Result "1/2-1/2"] 1. Nf3 Nf6 2. b3 d6 3. d4 g6 4. Bb2 Bg7 5. g3 O-O 6. Bg2 Nbd7 7. O-O e5 8. dxe5 Ng4 9. c4 dxe5 10. h3 Nh6 11. e4 Re8 12. Nc3 c6 13. Qd2 f6 14. Rad1 Nf7 15. Na4 Qe7 16. Qc1 Bf8 17. Ne1 Nb6 18. Nc3 Ng5 19. h4 Ne6 20. Nc2 Qg7 21. Ba3 Bxa3 22. Qxa3 Qe7 23. Qxe7 Rxe7 24. Rd6 Kf7 25. f4 exf4 26. gxf4 Rd7 27. Rxd7+ Bxd7 28. Kh2 a5 29. e5 fxe5 30. fxe5+ Ke7 31. Ne4 Rf8 32. Rxf8 Kxf8 33. Bh3 Nf4 34. Bxd7 Nxd7 35. Nd6 b6 36. Nd4 Nxe5 37. Nc8 c5 38. Nb5 Nd7 39. Nc3 Ke8 40. Kg3 Nd3 41. Na4 Nc1 42. Ncxb6 Nxb6 43. Nxb6 Ke7 44. Kf4 Nxa2 45. Na4 Kd6 46. Kg5 Nc1 47. Kh6 Nxb3 48. Kxh7 Nd2 49. Kxg6 Nxc4 50. h5 Ne5+ 51. Kf5 Nf7 52. Kg6 1/2-1/2