[Event "Amsterdam IBM"]
[Site "Amsterdam NED"]
[Date "1979.07.16"]
[EventDate "1979.07.12"]
[Round "4"]
[Result "1/2-1/2"]
[White "Hans Ree"]
[Black "Anatoly Lein"]
[ECO "A29"]
[WhiteElo "2382"]
[BlackElo "2274"]
[PlyCount "42"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Be7 6. d3 d6
7. Bg2 O-O 8. O-O Bg4 9. h3 Be6 10. e4 a5 11. Re1 Nd7 12. Be3
Re8 13. d4 exd4 14. Nxd4 Nxd4 15. Qxd4 Bf8 16. Rad1 f6 17. f4
Bf7 18. Bf2 c6 19. Ne3 Qc7 20. Nf5 Re6 21. Qd2 a4 1/2-1/2