[Event "Interzonal-09b"]
[Site "Petropolis"]
[Date "1973.08.12"]
[Round "14"]
[White "Biyiasas, Peter"]
[Black "Mecking, Henrique"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. g3 b5 5. Bg2 Bb7 6. d3 g6 7. O-O Bg7 8. a4 b4 9. Nb1 Nf6 10. Nbd2 O-O 11. Nc4 Nbd7 12. Re1 Qc7 13. Bf4 Nh5 14. Bg5 Rae8 15. Qd2 e6 16. Bh6 d5 17. Bxg7 Kxg7 18. exd5 exd5 19. Ne3 Nhf6 20. Nh4 d4 21. Nc4 Bxg2 22. Nxg2 Nb6 23. Nxb6 Qxb6 24. b3 Qc6 25. Rxe8 Rxe8 26. Re1 Ng4 27. Qf4 1/2-1/2