[Event "Chigorin Memorial-13"]
[Site "Sochi"]
[Date "1979.??.??"]
[Round "11"]
[White "Hartston, William R"]
[Black "Gufeld, Eduard"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2530"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 d6 4. e3 Nh5 5. Bg5 h6 6. Bh4 g5 7. Ng1 Ng7 8. Bg3 Nf5 9. Bd3 h5 10. Bxf5 Bxf5 11. h4 g4 12. Nc3 Bg7 13. Nge2 Nc6 14. f3 e5 15. d5 gxf3 16. gxf3 Ne7 17. e4 Bd7 18. Qd3 Ng6 19. O-O-O a6 20. Rdf1 Qe7 21. Nd1 O-O-O 22. Ne3 Nf4 23. Bxf4 exf4 24. Nc4 Bb5 25. Nd4 Bxd4 26. Qxd4 Bxc4 27. Qxc4 1/2-1/2