[Event "Buenos Aires"]
[Site "Buenos Aires"]
[Date "1970.07.25"]
[Round "5"]
[White "Panno, Oscar"]
[Black "Smyslov, Vassily V"]
[Result "1/2-1/2"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e3 Bb4 5. Qc2 O-O 6. d3 d5 7. cxd5 Nxd5 8. Be2 Be6 9. O-O Bd6 10. a3 h6 11. Ne4 a5 12. b3 Qe7 13. Bb2 f5 14. Nxd6 cxd6 15. Rac1 Rfc8 16. Qb1 b5 17. Nd2 f4 18. e4 Nb6 19. d4 Nxd4 20. Bxd4 exd4 21. Qd3 Qf6 1/2-1/2