[Event "World Cup"]
[Round "?"]
[Site "Rotterdam"]
[Date "1989"]
[White "Nunn, John DM"]
[WhiteElo "2620"]
[Black "Portisch, Lajos"]
[BlackElo "2610"]
[Result "1/2-1/2"]
[ECO "C88"]
[Opening "Ruy Lopez, Closed"]
 1. e4   e5
 2. Nf3  Nc6
 3. Bb5  a6
 4. Ba4  Nf6
 5. O-O  Be7
 6. Re1  b5
 7. Bb3  d6
 8. c3   O-O
 9. h3   Nb8
10. d4   Nbd7
11. Nbd2 Bb7
12. Bc2  Re8
13. a4   Bf8
14. Bd3  c6
15. Qc2  Qb6
16. b3   g6
17. Bb2  Rac8
18. Rad1 Nh5
19. Bf1  c5
20. Qb1  Bg7
21. Qa1  
1/2-1/2