1.
d4
Nf6
2.
c4
g6
3.
Nc3
Bg7
4.
e4
d6
5.
f3
Nc6
6.
Be3
e5
7.
d5
Nd4
8.
Bxd4
exd4
9.
Qxd4
Nh5
10.
Qd2
Qh4+
11.
Qf2
Bxc3+
12.
bxc3
Qe7
13.
Bd3
f5
14.
Ne2
O-O
15.
O-O
fxe4
16.
Bxe4
Nf6
17.
Ng3
Ng4
18.
Qe1
Ne5
19.
Qe2
b6
20.
f4
Bg4
21.
Qf2
Nxc4
22.
Qd4
b5
23.
a4
a6
24.
axb5
axb5
25.
Rxa8
Rxa8
26.
h3
Bd7
27.
f5
gxf5
28.
Nxf5
Bxf5
29.
Bxf5
Qe3+
30.
Qxe3
Nxe3
31.
Be6+
Kh8
32.
Rf7
Ra2
33.
g4
Rg2+
34.
Kh1
Rg3
35.
h4
h6
36.
Kh2
Rg2+
37.
Kh3
Rg1
38.
Kh2
Rg2+
39.
Kh1
Rg3
40.
Rxc7
Nxg4
41.
Bxg4
Rxg4
42.
Rc6
Rxh4+
43.
Kg2
Rc4
44.
Rxd6
Rxc3
45.
Rxh6+
Kg7
46.
Rb6
Rd3
47.
d6
Kf7
1/2-1/2
Opening Explorer
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Event
Site
Philadelphia
Date
1990.??.??
Round
6
White
Colias, Billy
Black
Harris, Derek JE
Result
1/2-1/2
WhiteElo
2290
BlackElo
2215
[Event "World op 18th"] [Site "Philadelphia"] [Date "1990.??.??"] [Round "6"] [White "Colias, Billy"] [Black "Harris, Derek JE"] [Result "1/2-1/2"] [EventArchiveKey "world-open-1990"] [WhiteElo "2290"] [BlackElo "2215"] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 Nc6 6. Be3 e5 7. d5 Nd4 8. Bxd4 exd4 9. Qxd4 Nh5 10. Qd2 Qh4+ 11. Qf2 Bxc3+ 12. bxc3 Qe7 13. Bd3 f5 14. Ne2 O-O 15. O-O fxe4 16. Bxe4 Nf6 17. Ng3 Ng4 18. Qe1 Ne5 19. Qe2 b6 20. f4 Bg4 21. Qf2 Nxc4 22. Qd4 b5 23. a4 a6 24. axb5 axb5 25. Rxa8 Rxa8 26. h3 Bd7 27. f5 gxf5 28. Nxf5 Bxf5 29. Bxf5 Qe3+ 30. Qxe3 Nxe3 31. Be6+ Kh8 32. Rf7 Ra2 33. g4 Rg2+ 34. Kh1 Rg3 35. h4 h6 36. Kh2 Rg2+ 37. Kh3 Rg1 38. Kh2 Rg2+ 39. Kh1 Rg3 40. Rxc7 Nxg4 41. Bxg4 Rxg4 42. Rc6 Rxh4+ 43. Kg2 Rc4 44. Rxd6 Rxc3 45. Rxh6+ Kg7 46. Rb6 Rd3 47. d6 Kf7 1/2-1/2