[Event "Olympiad-10 Preliminaries A"]
[Site "Helsinki"]
[Date "1952.08.15"]
[Round "6"]
[White "Ortega, Rogelio"]
[Black "Zita, Frantisek"]
[Result "0-1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. e3 O-O 6. Bd3 dxc4 7. Bxc4 c5 8. O-O a6 9. Qe2 b5 10. Bd3 Bb7 11. dxc5 Bxc5 12. Rd1 Nbd7 13. a3 Rc8 14. b4 Ba7 15. Bb2 Qe7 16. Ng5 Rfd8 17. Rd2 h6 18. Nge4 Bb8 19. Rad1 Nxe4 20. Nxe4 f5 21. Ng3 Nf6 22. Bd4 Nd5 23. Qh5 Qf7 24. Qh3 Nf4 25. exf4 Rxd4 26. Ne2 Rd6 27. Qe3 Rcd8 28. Nc1 Bd5 29. Be2 Ba7 30. Qe5 R6d7 31. Qc3 Kh7 32. Nd3 Rc7 33. Qb2 Rdc8 34. Ne5 Qf6 35. Qb1 Rc3 36. Bf3 Rb3 37. Qa2 Rxf3 38. Rxd5 Rxf2 0-1