[Event "Interzonal-04"]
[Site "Portoroz"]
[Date "1958.08.22"]
[Round "11"]
[White "De Greif, Boris"]
[Black "Neikirkh, Oleg"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Nxd5 exd5 11. Bd3 Ne5 12. O-O Nxd3 13. Qxd3 O-O 14. Be3 Re8 15. Rad1 Be6 1/2-1/2