| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Chemin vs P de Azevedo |
| 0-1 | 40 | 1979 | Brazilian Championship | A45 Queen's Pawn Game |
| 2. J Chemin vs W Ferreira Jr |
| ½-½ | 57 | 1980 | Brazilian Championship | C15 French, Winawer |
| 3. Z Kornin vs J Chemin |
| 1-0 | 26 | 1981 | PR State Ch | A06 Reti Opening |
| 4. J Chemin vs M Campos |
| 1-0 | 61 | 1984 | Brazilian Interclub Championship | A46 Queen's Pawn Game |
| 5. J Chemin vs M Werner |
| 1-0 | 52 | 1984 | Brazilian Interclub Championship | A47 Queen's Indian |
| 6. W Borges vs J Chemin |
| 1-0 | 50 | 1984 | Brazilian Interclub Championship | C16 French, Winawer |
| 7. H van Riemsdijk vs J Chemin |
| 0-1 | 49 | 1984 | Brazilian Interclub Championship | C15 French, Winawer |
| 8. C Braga vs J Chemin |
| 1-0 | 55 | 1984 | Brazilian Interclub Championship | C05 French, Tarrasch |
| 9. J Chemin vs G Russo |
| 1-0 | 27 | 1992 | Guarapuava Latin American Cup Open | A46 Queen's Pawn Game |
| 10. J Chemin vs S Cunha Pereira |
| 0-1 | 34 | 1992 | Guarapuava Latin American Cup Open | C68 Ruy Lopez, Exchange |
| 11. E Tsuboi vs J Chemin |
| ½-½ | 28 | 1992 | Guarapuava Latin American Cup Open | C91 Ruy Lopez, Closed |
| 12. J Chemin vs B Ribeiro |
| 1-0 | 66 | 1992 | Guarapuava Latin American Cup Open | D05 Queen's Pawn Game |
| 13. M Guimaraes de Souza vs J Chemin |
| ½-½ | 48 | 1992 | Guarapuava Latin American Cup Open | D35 Queen's Gambit Declined |
| 14. J Chemin vs D M D'Israel |
| ½-½ | 28 | 1992 | Guarapuava Latin American Cup Open | A46 Queen's Pawn Game |
| 15. R Ribeiro vs J Chemin |
| 0-1 | 64 | 1992 | Guarapuava Latin American Cup Open | A06 Reti Opening |
| 16. J Chemin vs H Kaminski |
| ½-½ | 47 | 1992 | Guarapuava Latin American Cup Open | D02 Queen's Pawn Game |
| 17. G Milos vs J Chemin |
| 1-0 | 44 | 1992 | Guarapuava Latin American Cup Open | C16 French, Winawer |
| 18. A Nascimento vs J Chemin |
| 0-1 | 58 | 1992 | Guarapuava Latin American Cup Open | E04 Catalan, Open, 5.Nf3 |
| 19. R Lehtivaara vs J Chemin |
| ½-½ | 51 | 1992 | Guarapuava Latin American Cup Open | C44 King's Pawn Game |
| 20. J Chemin vs A Rodriguez Martos |
| ½-½ | 22 | 1997 | Linares Anibal Open | D02 Queen's Pawn Game |
| 21. Miles vs J Chemin |
 | 1-0 | 40 | 1997 | Linares Anibal Open | A40 Queen's Pawn Game |
| 22. J Chemin vs E Matsuura |
| 0-1 | 65 | 1998 | Florianopolis op | D02 Queen's Pawn Game |
| 23. J Chemin vs I Ibragimov |
| 0-1 | 33 | 2005 | American Continental | A46 Queen's Pawn Game |
| 24. A Borda vs J Chemin |
| 0-1 | 68 | 2005 | American Continental | C53 Giuoco Piano |
| 25. J Chemin vs D Valerga |
| ½-½ | 45 | 2005 | American Continental | A46 Queen's Pawn Game |
Kibitzing
