[Event "Candidates reserve"]
[Site "Portoroz"]
[Date "1971.??.??"]
[Round "6"]
[White "Smyslov, Vassily V"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Rb8 7. Qd2 b5 8. Nf3 b4 9. Nd1 Nd4 10. Nh4 e5 11. f4 exf4 12. Bxf4 Ne7 13. O-O h6 14. Be3 g5 15. Nf3 Nxf3+ 16. Bxf3 Nc6 17. Bg2 Be6 18. a3 a5 19. axb4 axb4 20. c3 bxc3 21. bxc3 Ne5 1/2-1/2