1.
d4
Nf6
2.
Bg5
d5
3.
Bxf6
exf6
4.
e3
c6
5.
c4
Bb4+
6.
Nd2
O-O
7.
a3
Be7
8.
Bd3
dxc4
9.
Nxc4
c5
10.
dxc5
Nd7
11.
b4
a5
12.
Rc1
axb4
13.
axb4
b6
14.
Be4
Ra7
15.
cxb6
Nxb6
16.
Qxd8
Bxd8
17.
Ne2
Nxc4
18.
Rxc4
Ba6
19.
Rc2
Be7
20.
O-O
Bxe2
21.
Rxe2
Bxb4
22.
Rb2
Be7
23.
Rfb1
Rd8
24.
g3
g6
25.
Rb7
Rd7
26.
Rxa7
Rxa7
27.
Rb7
1/2-1/2
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Event
Site
Portland
Date
1987.08.03
Round
2
White
Knowles, Alan
Black
Koepcke, Richard
Result
1/2-1/2
WhiteElo
1958
BlackElo
2239
[Event "US Open-88"] [Site "Portland"] [Date "1987.08.03"] [Round "2"] [White "Knowles, Alan"] [Black "Koepcke, Richard"] [Result "1/2-1/2"] [WhiteElo "1958"] [BlackElo "2239"] 1. d4 Nf6 2. Bg5 d5 3. Bxf6 exf6 4. e3 c6 5. c4 Bb4+ 6. Nd2 O-O 7. a3 Be7 8. Bd3 dxc4 9. Nxc4 c5 10. dxc5 Nd7 11. b4 a5 12. Rc1 axb4 13. axb4 b6 14. Be4 Ra7 15. cxb6 Nxb6 16. Qxd8 Bxd8 17. Ne2 Nxc4 18. Rxc4 Ba6 19. Rc2 Be7 20. O-O Bxe2 21. Rxe2 Bxb4 22. Rb2 Be7 23. Rfb1 Rd8 24. g3 g6 25. Rb7 Rd7 26. Rxa7 Rxa7 27. Rb7 1/2-1/2