[Event "San Antonio"]
[Site "San Antonio"]
[Date "1972.12.10"]
[Round "15"]
[White "Byrne, Donald"]
[Black "Hort, Vlastimil"]
[Result "1/2-1/2"]

1. g3 c5 2. c4 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. d3 Nf6 6. Rb1 O-O 7. a3 a5 8. Bd2 e6 9. Nh3 b6 10. O-O Bb7 11. Nf4 Qb8 12. Na4 Ra6 13. b4 axb4 14. axb4 Qa8 15. b5 Rxa4 16. bxc6 Bxc6 17. Bxc6 Qxc6 18. Rxb6 Qxb6 19. Qxa4 Qb2 20. Qa5 d6 1/2-1/2