1.
c4
g6
2.
Nc3
Bg7
3.
Nf3
e5
4.
g3
Nc6
5.
Bg2
f5
6.
d3
Nf6
7.
O-O
d6
8.
Rb1
a5
9.
a3
O-O
10.
b4
axb4
11.
axb4
h6
12.
b5
Ne7
13.
Qb3
Kh7
14.
c5
e4
15.
cxd6
cxd6
16.
dxe4
fxe4
17.
Nd4
Nf5
18.
Nc2
d5
19.
Rd1
Be6
20.
Bf4
Qe7
21.
Qb4
Qf7
22.
b6
g5
23.
Be5
Rac8
24.
Nd4
1/2-1/2
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Event
Site
Leeuwarden
Date
1993.??.??
Round
9
White
Costello, Colin
Black
Wiersma, Eelke
Result
1/2-1/2
WhiteElo
2135
[Event "Leeuwarden op"] [Site "Leeuwarden"] [Date "1993.??.??"] [Round "9"] [White "Costello, Colin"] [Black "Wiersma, Eelke"] [Result "1/2-1/2"] [WhiteElo "2135"] 1. c4 g6 2. Nc3 Bg7 3. Nf3 e5 4. g3 Nc6 5. Bg2 f5 6. d3 Nf6 7. O-O d6 8. Rb1 a5 9. a3 O-O 10. b4 axb4 11. axb4 h6 12. b5 Ne7 13. Qb3 Kh7 14. c5 e4 15. cxd6 cxd6 16. dxe4 fxe4 17. Nd4 Nf5 18. Nc2 d5 19. Rd1 Be6 20. Bf4 Qe7 21. Qb4 Qf7 22. b6 g5 23. Be5 Rac8 24. Nd4 1/2-1/2