1.
d4
d5
2.
c4
e6
3.
Nc3
Be7
4.
Nf3
Nf6
5.
g3
O-O
6.
Bg2
Nbd7
7.
cxd5
exd5
8.
O-O
c6
9.
Bf4
Re8
10.
a3
a5
11.
Qc2
Nb6
12.
Rad1
g6
13.
Ne5
Bf5
14.
Qc1
Nfd7
15.
h3
g5
16.
e4
dxe4
17.
Be3
f6
18.
g4
Be6
19.
Nxd7
Qxd7
20.
Nxe4
Nd5
21.
Ng3
Rf8
22.
Be4
Rae8
23.
Nf5
1/2-1/2
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Event
Site
Amsterdam
Date
1969.??.??
Round
4
White
Darga, Klaus
Black
Hartoch, Robert G
Result
1/2-1/2
[Event "IBM"] [Site "Amsterdam"] [Date "1969.??.??"] [Round "4"] [White "Darga, Klaus"] [Black "Hartoch, Robert G"] [Result "1/2-1/2"] 1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. g3 O-O 6. Bg2 Nbd7 7. cxd5 exd5 8. O-O c6 9. Bf4 Re8 10. a3 a5 11. Qc2 Nb6 12. Rad1 g6 13. Ne5 Bf5 14. Qc1 Nfd7 15. h3 g5 16. e4 dxe4 17. Be3 f6 18. g4 Be6 19. Nxd7 Qxd7 20. Nxe4 Nd5 21. Ng3 Rf8 22. Be4 Rae8 23. Nf5 1/2-1/2