[Event "October Revolution 60"]
[Round "4"]
[Site "Leningrad"]
[Date "1977.06.28"]
[White "Smejkal, Jan"]
[WhiteElo "2575"]
[Black "Ribli, Zoltan"]
[BlackElo "2595"]
[Result "1/2-1/2"]
[ECO "A10"]
[Opening "English Opening: 1. c4"]
 1. c4   g6
 2. Nf3  Bg7
 3. d4   Nf6
 4. g3   O-O
 5. Bg2  d5
 6. cxd5 Nxd5
 7. O-O  c5
 8. e4   Nf6
 9. e5   Nd5
10. dxc5 Na6
11. a3   Nxc5
12. b4   Na6
13. Bb2  Nb6
14. Qe2  Be6
15. Rd1  Qc7
16. Nbd2 Qc2
17. Rab1 Bd5
18. Nd4  Qa4
19. Ne4  Qe8
20. f4   Rc8
21. Rbc1 Rxc1
22. Rxc1 Qb8
23. Nb5  Bc6
24. Rxc6 bxc6
25. Nd4  Qb7
1/2-1/2