1.
c4
g6
2.
d4
Nf6
3.
g3
Bg7
4.
Bg2
O-O
5.
Nc3
d6
6.
Nf3
c5
7.
O-O
Nc6
8.
d5
Na5
9.
Nd2
a6
10.
Qc2
Rb8
11.
b3
b5
12.
Bb2
e5
13.
e3
Ng4
14.
Nd1
f5
15.
f3
Nf6
16.
f4
e4
17.
Bc3
Bd7
18.
Nf2
Ne8
19.
g4
Nb7
20.
g5
Qe7
21.
Nh1
Bxc3
22.
Qxc3
Qg7
23.
Qc2
Nc7
24.
Ng3
Na8
25.
h4
Nb6
26.
h5
Na5
27.
h6
Qh8
28.
Bh3
Rf7
29.
Rab1
Kf8
30.
Rfc1
Ke7
31.
Bf1
b4
32.
a3
Nb7
33.
Qa2
a5
34.
a4
Kd8
1/2-1/2
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Event
Site
Amsterdam
Date
1969.??.??
Round
1
White
Black
Result
1/2-1/2
Score
[Event "IBM"] [Site "Amsterdam"] [Date "1969.??.??"] [Round "1"] [White "Ivkov, Borislav"] [Black "Byrne, Robert Eugene"] [Result "1/2-1/2"] 1. c4 g6 2. d4 Nf6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 c5 7. O-O Nc6 8. d5 Na5 9. Nd2 a6 10. Qc2 Rb8 11. b3 b5 12. Bb2 e5 13. e3 Ng4 14. Nd1 f5 15. f3 Nf6 16. f4 e4 17. Bc3 Bd7 18. Nf2 Ne8 19. g4 Nb7 20. g5 Qe7 21. Nh1 Bxc3 22. Qxc3 Qg7 23. Qc2 Nc7 24. Ng3 Na8 25. h4 Nb6 26. h5 Na5 27. h6 Qh8 28. Bh3 Rf7 29. Rab1 Kf8 30. Rfc1 Ke7 31. Bf1 b4 32. a3 Nb7 33. Qa2 a5 34. a4 Kd8 1/2-1/2