[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.11.10"]
[Round "14"]
[White "Batres, Francisco"]
[Black "Schumacher, Helmut"]
[Result "1/2-1/2"]

1. Nf3 Nf6 2. c4 b6 3. Nc3 Bb7 4. d4 e6 5. a3 Be7 6. d5 d6 7. e4 Nbd7 8. Bd3 e5 9. O-O h6 10. b4 a5 11. Rb1 O-O 12. Ne2 Nh7 13. Ng3 axb4 14. axb4 Bc8 15. Nf5 Ndf6 16. N3h4 Ne8 17. Qh5 Bxh4 18. Nxh4 Nhf6 1/2-1/2