[Event "US Open-62"]
[Site "San Francisco"]
[Date "1961.08.23"]
[Round "9"]
[White "Weamer, D."]
[Black "Gross, Ronald Joseph"]
[Result "0-1"]
[ECO "C99"]
[PlyCount "82"]
[EventDate "1961.08.14"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Bd7 13. Nf1 cxd4 14. cxd4 Rfc8 15. Ne3 Nc6 16. d5 Nb4 17. Bb1 a5 18. Nf1 Nc2 19. Qxc2 Qxc2 20. Bxc2 Rxc2 21. Rb1 Nh5 22. Bd2 Rcc8 23. Rbc1 Bd8 24. Rxc8 Rxc8 25. Rc1 Rxc1 26. Bxc1 Nf4 27. Bxf4 exf4 28. N1d2 Kf8 29. Kf1 Bb6 30. Nb3 Ke7 31. Ke2 f5 32. exf5 Bxf5 33. Nbd4 Be4 34. Nxb5 Bxd5 35. b3 Bb7 36. Nfd4 Bxg2 37. Nf5+ Kf6 38. Nfxd6 Bxh3 39. Nc4 Bd8 40. Nd4 Bd7 41. Kf3 g5 0-1

