1.
d4
d6
2.
Nf3
Bg4
3.
c4
g6
4.
Nc3
Bg7
5.
e3
e5
6.
d5
Nd7
7.
e4
Ne7
8.
Be2
Bxf3
9.
Bxf3
O-O
10.
h4
h6
11.
h5
g5
12.
Be3
f5
13.
exf5
Nxf5
14.
Be4
Nxe3
15.
fxe3
a5
16.
Qe2
Nc5
17.
O-O-O
Qe7
18.
Rhf1
Rxf1
19.
Rxf1
Rf8
20.
Rf3
Rxf3
21.
Qxf3
Qf6
22.
Qe2
Qf7
23.
Kd2
Qd7
24.
Qf3
g4
25.
Qf5
Qxf5
26.
Bxf5
e4
27.
Bxg4
Kf7
28.
Bf5
Bxc3+
29.
Kxc3
Kf6
30.
Bc8
Ke5
31.
g4
Na4+
32.
Kb3
Nc5+
33.
Kc2
Kf6
34.
Kc3
Na4+
35.
Kd4
Nxb2
36.
Bxb7
Nd3
37.
Bc8
Nf2
38.
Bf5
Kg5
39.
c5
Nxg4
40.
cxd6
cxd6
41.
Bxe4
Kxh5
42.
Bf3
Kg5
1/2-1/2
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Event
Site
Amsterdam
Date
1969.??.??
Round
6
White
Black
Barendregt, Johan
Result
1/2-1/2
[Event "IBM"] [Site "Amsterdam"] [Date "1969.??.??"] [Round "6"] [White "Ivkov, Borislav"] [Black "Barendregt, Johan"] [Result "1/2-1/2"] 1. d4 d6 2. Nf3 Bg4 3. c4 g6 4. Nc3 Bg7 5. e3 e5 6. d5 Nd7 7. e4 Ne7 8. Be2 Bxf3 9. Bxf3 O-O 10. h4 h6 11. h5 g5 12. Be3 f5 13. exf5 Nxf5 14. Be4 Nxe3 15. fxe3 a5 16. Qe2 Nc5 17. O-O-O Qe7 18. Rhf1 Rxf1 19. Rxf1 Rf8 20. Rf3 Rxf3 21. Qxf3 Qf6 22. Qe2 Qf7 23. Kd2 Qd7 24. Qf3 g4 25. Qf5 Qxf5 26. Bxf5 e4 27. Bxg4 Kf7 28. Bf5 Bxc3+ 29. Kxc3 Kf6 30. Bc8 Ke5 31. g4 Na4+ 32. Kb3 Nc5+ 33. Kc2 Kf6 34. Kc3 Na4+ 35. Kd4 Nxb2 36. Bxb7 Nd3 37. Bc8 Nf2 38. Bf5 Kg5 39. c5 Nxg4 40. cxd6 cxd6 41. Bxe4 Kxh5 42. Bf3 Kg5 1/2-1/2