[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.09"]
[Round "5"]
[White "Papapostolou, Christos"]
[Black "Purdy, Cecil John Seddon"]
[Result "0-1"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. c4 Nc6 5. Bb2 O-O 6. e3 d5 7. cxd5 Nxd5 8. Nf3 Re8 9. Be2 Bf5 10. O-O Qe7 11. a3 Bd6 12. Qb3 Nf4 13. exf4 Qxe2 14. Nc3 Qd3 15. Rfe1 Bxf4 16. Qxb7 Bd7 17. Ne2 Bd6 18. Ne5 Nxe5 0-1