[Event "Interzonal-08"]
[Site "Palma de Mallorca"]
[Date "1970.12.12"]
[Round "23"]
[White "Hort, Vlastimil"]
[Black "Addison, William G"]
[Result "1/2-1/2"]

1. Nf3 Nf6 2. c4 c6 3. d4 d5 4. e3 Bf5 5. Bd3 Bxd3 6. Qxd3 e6 7. Nc3 Bb4 8. Bd2 O-O 9. O-O a5 10. Rac1 Nbd7 11. a3 Bxc3 12. Bxc3 Ne4 13. Nd2 Nxd2 14. Bxd2 a4 15. e4 1/2-1/2