Hartoch, Robert G VS Byrne, Robert Eugene 1969.??.??

[Event "IBM"]
[Site "Amsterdam"]
[Date "1969.??.??"]
[Round "3"]
[White "Hartoch, Robert G"]
[Black "Byrne, Robert Eugene"]
[Result "1/2-1/2"]

1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. Nc3 O-O 5. d4 d6 6. Nf3 c5 7. O-O Nc6 8. d5 Na5 9. Nd2 a6 10. Qc2 Rb8 11. b3 b5 12. Bb2 e5 13. Rab1 Bd7 14. e3 Ng4 15. Nd1 f5 16. f3 Nf6 17. f4 e4 18. Nf2 h5 19. h4 Qe7 20. Rfe1 Rb6 21. Bc3 Nb7 22. Bf1 1/2-1/2