1.
c4
Nf6
2.
d4
e6
3.
Nc3
Bb4
4.
e3
c5
5.
Ne2
cxd4
6.
exd4
O-O
7.
a3
Be7
8.
Nf4
d5
9.
cxd5
Nxd5
10.
Ncxd5
exd5
11.
Be2
Nc6
12.
O-O
Bg5
13.
Bf3
Bxf4
14.
Bxf4
Qf6
15.
Be3
Rd8
16.
Qb3
Be6
17.
Qxb7
Nxd4
18.
Bxd4
Qxd4
19.
Rfd1
Qe5
20.
Re1
1/2-1/2
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Event
Site
Tilburg
Date
1978.09.01
Round
1
White
Black
Result
1/2-1/2
WhiteElo
2585
BlackElo
2630
[Event "Interpolis-02"] [Site "Tilburg"] [Date "1978.09.01"] [Round "1"] [White "Timman, Jan H"] [Black "Portisch, Lajos"] [Result "1/2-1/2"] [WhiteElo "2585"] [BlackElo "2630"] 1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 cxd4 6. exd4 O-O 7. a3 Be7 8. Nf4 d5 9. cxd5 Nxd5 10. Ncxd5 exd5 11. Be2 Nc6 12. O-O Bg5 13. Bf3 Bxf4 14. Bxf4 Qf6 15. Be3 Rd8 16. Qb3 Be6 17. Qxb7 Nxd4 18. Bxd4 Qxd4 19. Rfd1 Qe5 20. Re1 1/2-1/2