[Event "Candidates sf Petrosian-Kortschnoj+1-0"]
[Site "Moscow"]
[Date "1971.07.??"]
[Round "3"]
[White "Petrosian, Tigran V"]
[Black "Kortschnoj, Viktor Lvovich"]
[Result "1/2-1/2"]

1. Nf3 d5 2. c4 e6 3. g3 d4 4. Bg2 c5 5. O-O Nc6 6. d3 Nf6 7. e3 Be7 8. exd4 cxd4 9. Re1 Nd7 10. Na3 Nc5 11. Nc2 a5 12. b3 O-O 13. Bb2 Bf6 14. Ba3 Qb6 15. Bxc5 Qxc5 16. Nd2 Qb6 17. a3 Qc7 18. c5 b5 19. cxb6 Qxb6 20. Nc4 Qc7 21. b4 Rb8 22. Nxa5 Nxa5 23. bxa5 Qxa5 24. Nb4 Bb7 25. Nc6 Bxc6 26. Bxc6 Rfc8 27. Be4 g6 1/2-1/2