[Event "US Open-68"]
[Site "Atlanta"]
[Date "1967.??.??"]
[Round "3"]
[White "Day, Michael"]
[Black "Meyer, John C"]
[Result "0-1"]
[ECO "B20"]
[PlyCount "62"]
[EventDate "1967.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Ne2 e6 3. d4 b5 4. Be3 Nf6 5. f3 d5 6. e5 Nfd7 7. c3 Qb6 8. f4 Nc6 9. Ng3 b4 10. a4 bxc3 11. bxc3 cxd4 12. cxd4 Qb2 13. Nd2 Nxd4 14. Rc1 Ba3 15. Nf3 Nxf3+ 16. gxf3 Bb4+ 17. Bd2 0-0 18. Rc2 Qd4 19. Ne2 Bxd2+ 20. Rxd2 Qe3 21. Rd3 Qb6 22. Nd4 Nc5 23. Rd2 Bd7 24. Bb5 Bxb5 25. axb5 a6 26. bxa6 Qxa6 27. Kf2 f6 28. f5 fxe5 29. Nxe6 Nxe6 30. fxe6 e4 31. Rxd5 Rxf3+ 0-1

[Event "US Open-68"]
[Site "Atlanta"]
[Date "1967.??.??"]
[Round "1"]
[White "Day, Michael"]
[Black "Perrin, Norman"]
[Result "1-0"]
[ECO "B35"]
[PlyCount "61"]
[EventDate "1967.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Nf6 6. Nc3 Bg7 7. h3 0-0 8. Bc4 Nxe4 9. Bxf7+ Rxf7 10. Nxe4 Nxd4 11. Bxd4 Bxd4 12. Qxd4 Qa5+ 13. b4 Qc7 14. 0-0-0 Qf4+ 15. Kb1 d6 16. g3 Qf5 17. Rhe1 Bd7 18. f4 h6 19. Nf2 a5 20. Ng4 Kh7 21. Rxe7 Rxe7 22. Nf6+ Kh8 23. Nxd7+ Kh7 24. Qxd6 Rf7 25. Ne5 Rg7 26. Ng4 Rf7 27. Rd5 Qe4 28. f5 Qxb4+ 29. Qxb4 axb4 30. fxg6+ Kxg6 31. Ne5+ 1-0

[Event "US Open-68"]
[Site "Atlanta"]
[Date "1967.??.??"]
[Round "5"]
[White "Kaplan, David"]
[Black "Day, Michael"]
[Result "1/2-1/2"]
[ECO "E36"]
[PlyCount "42"]
[EventDate "1967.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 0-0 7. Bg5 Re8 8. Nf3 h6 9. Bh4 Nbd7 10. cxd5 exd5 11. e3 c6 12. Ne5 g5 13. Bg3 Ne4 14. Qc2 Nxe5 15. Bxe5 c5 16. f3 cxd4 17. Bxd4 Nd6 18. Bd3 Bd7 19. Bh7+ Kf8 20. Qc3 Re6 21. Bc5 Qf6 1/2-1/2

[Event "Illinois op"]
[Site "Illinois"]
[Date "1965.??.??"]
[Round "?"]
[White "Day, Michael"]
[Black "Tums, John"]
[Result "0-1"]
[ECO "E80"]
[PlyCount "92"]
[EventDate "1965.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. f3 Nbd7 6. Be3 c6 7. Bd3 a6 8. b4 0-0 9. Nge2 e5 10. d5 Nh5 11. 0-0 f5 12. exf5 gxf5 13. f4 e4 14. Bc2 c5 15. a3 b6 16. Rb1 Ndf6 17. h3 Kh8 18. Qe1 Rg8 19. Kh2 Bf8 20. Nd1 Ra7 21. Rg1 Rag7 22. g3 Rg6 23. Bd2 Rh6 24. Bc3 Bg7 25. Ne3 Ne8 26. Ba4 Bd7 27. Bc6 Bxc3 28. Qxc3+ Nhg7 29. Qb2 Nf6 30. bxc5 bxc5 31. Bxd7 Qxd7 32. Qc3 Qf7 33. Qe1 Qh5 34. Qf1 Re8 35. Rb7 Qf3 36. Rxg7 Qxe3 37. Rg5 Qf3 38. Qxf3 exf3 39. Nc1 Ng4+ 40. Rxg4 fxg4 41. h4 Re3 42. Rf1 Rf6 43. Kg1 Rf8 44. Kf2 Rc3 45. Re1 Rb8 46. Kf1 Rb1 0-1

