[Event "October Revolution 50years"]
[Site "Moscow"]
[Date "1967.05.31"]
[Round "8"]
[White "Stein, Leonid"]
[Black "Portisch, Lajos"]
[Result "1-0"]

1. e4 c6 2. d3 d5 3. Nd2 g6 4. Ngf3 Bg7 5. g3 Nf6 6. Bg2 dxe4 7. dxe4 O-O 8. O-O Na6 9. e5
Nd5 10. Nb3 Bg4 11. Qe2 Qc8 12. Re1 Nac7 13. Bd2 f6 14. exf6 Bxf6 15. c3 Rf7 16. Qe4 Bf5
17. Qc4 Nb6 18. Qf1 Na4 19. Bc1 Qd7 20. Ne5 Bxe5 21. Rxe5 Nb5 22. Bf4 Rd8 23. Nc5 Nxc5 24.
Rxc5 Nc7 25. Re5 Ne6 26. Bh6 Qd6 27. Qe2 Ng7 28. Re1 Bd3 29. Qg4 Bf5 30. Qc4 Qxe5 31. Rxe5
Rd1+ 32. Bf1 Bh3 33. Rxe7 Rxf1+ 34. Qxf1 Bxf1 35. Rxf7 Kxf7 36. Kxf1 Nf5 37. Be3 a6 38.
Ke2 h5 39. Kd3 b5 40. Ke4 Ke6 41. h3 a5 42. Bc5 a4 43. Bf8 1-0