[Event "Interzonal-13b"]
[Site "Taxco"]
[Date "1985.06.15"]
[Round "4"]
[White "Speelman, Jonathan S"]
[Black "Balashov, Yuri S"]
[Result "1/2-1/2"]
[WhiteElo "2530"]
[BlackElo "2495"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 7. d5 c6 8. Bd3 b5 9. Nge2 b4 10. Nb1 a5 11. a3 Na6 12. axb4 Nxb4 13. dxc6 Qc7 14. Nec3 Nxd3+ 15. Qxd3 Qxc6 16. b3 Be6 17. O-O Rfd8 18. Nd5 Qb7 19. Nxf6+ Bxf6 20. Nd2 Qc6 21. Ra4 1/2-1/2