[Event "US Open-72"]
[Site "Ventura"]
[Date "1971.??.??"]
[Round "3"]
[White "Barrett, Gordon S"]
[Black "Leavens, Drew"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "58"]
[EventDate "1971.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. g4 d5 2. Bg2 Bxg4 3. c4 Nf6 4. cxd5 Nxd5 5. Qb3 c6 6. Qxb7 Nb6 7. Bxc6+ Nxc6 8. Qxc6+ Bd7 9. Qg2 Rc8 10. Nc3 g6 11. Nf3 Bg7 12. 0-0 Bc6 13. Qg3 0-0 14. Nd1 Nd5 15. a3 Ba8 16. d3 Rc2 17. e4 Nf6 18. Ne1 Nh5 19. Qh4 Rc7 20. Bd2 Qd7 21. h3 f5 22. exf5 Rxf5 23. Qg4 Bd4 24. Ng2 Bf3 25. Qh4 Bf6 26. Qb4 Rb5 27. Qa4 Qxh3 28. Nde3 Nf4 29. Qxb5 Ne2# 0-1

[Event "US Open-72"]
[Site "Ventura"]
[Date "1971.??.??"]
[Round "1"]
[White "Cross, Robert Gary"]
[Black "Leavens, Drew"]
[Result "0-1"]
[ECO "E60"]
[PlyCount "68"]
[EventDate "1971.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nf3 d6 6. 0-0 Nbd7 7. Qc2 d5 8. cxd5 Nxd5 9. e4 Nb4 10. Qb3 Nc6 11. Rd1 Nb6 12. d5 Na5 13. Qc2 Nac4 14. Nbd2 Nxd2 15. Bxd2 Bd7 16. Bc3 Bxc3 17. Qxc3 Rc8 18. Ne5 Qe8 19. b3 c6 20. Qa5 cxd5 21. Qxa7 Qd8 22. Nxd7 Nxd7 23. Qxb7 Nb6 24. exd5 Qd6 25. a4 Rc7 26. Qa6 Ra8 27. Qe2 Rac8 28. a5 Nd7 29. a6 Ra7 30. Bh3 Rcc7 31. Bxd7 Rxd7 32. Qb5 Qe5 33. b4 e6 34. dxe6 Rxd1+ 0-1

