| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. T Enkhbat vs C Kosasih |
| 1-0 | 54 | 1995 | Asia-chT fin 11th | E80 King's Indian, Samisch Variation |
| 2. C Kosasih vs Nay Oo Kyaw Tun |
| 0-1 | 52 | 1997 | World Cities | D27 Queen's Gambit Accepted, Classical |
| 3. C Kosasih vs Korneev |
| 0-1 | 22 | 1997 | World Cities | B43 Sicilian, Kan, 5.Nc3 |
| 4. C Kosasih vs Timoshenko |
| ½-½ | 24 | 1997 | World Cities | B96 Sicilian, Najdorf |
| 5. E Handoko vs C Kosasih |
| ½-½ | 27 | 2000 | Japfa op | C36 King's Gambit Accepted, Abbazia Defense |
| 6. C Kosasih vs I Rogers |
 | 0-1 | 41 | 2000 | Japfa op | A57 Benko Gambit |
| 7. D K Johansen vs C Kosasih |
| 0-1 | 27 | 2000 | Japfa op | A55 Old Indian, Main line |
| 8. C Kosasih vs D Barua |
| ½-½ | 35 | 2000 | Japfa op | D29 Queen's Gambit Accepted, Classical |
| 9. R Gunawan vs C Kosasih |
| 0-1 | 50 | 2000 | Japfa op | D00 Queen's Pawn Game |
| 10. C Kosasih vs A Wahono |
| ½-½ | 34 | 2001 | Wotulo Memorial | C42 Petrov Defense |
| 11. Sasikiran vs C Kosasih |
| ½-½ | 52 | 2001 | Wotulo Memorial | C77 Ruy Lopez |
| 12. C Kosasih vs D Juswanto |
| ½-½ | 88 | 2001 | Wotulo Memorial | D15 Queen's Gambit Declined Slav |
| 13. E Supriyono vs C Kosasih |
| ½-½ | 48 | 2001 | Wotulo Memorial | D02 Queen's Pawn Game |
| 14. C Kosasih vs R Majella |
| 0-1 | 31 | 2001 | Wotulo Memorial | D16 Queen's Gambit Declined Slav |
| 15. D Liu vs C Kosasih |
| ½-½ | 56 | 2001 | Wotulo Memorial | B90 Sicilian, Najdorf |
| 16. C Kosasih vs Zaw Win Lay |
| ½-½ | 41 | 2001 | Wotulo Memorial | E12 Queen's Indian |
| 17. N Miezis vs C Kosasih |
| 0-1 | 81 | 2001 | Wotulo Memorial | A22 English |
| 18. C Kosasih vs D Sharavdorj |
| 1-0 | 74 | 2001 | Wotulo Memorial | D93 Grunfeld, with Bf4 & e3 |
| 19. K Hulak vs C Kosasih |
| ½-½ | 56 | 2001 | Wotulo Memorial | D18 Queen's Gambit Declined Slav, Dutch |
| 20. C Kosasih vs S Prayitno |
| 1-0 | 39 | 2001 | Wotulo Memorial | E60 King's Indian Defense |
| 21. C Kosasih vs D K Johansen |
| ½-½ | 11 | 2001 | Wotulo Memorial | E60 King's Indian Defense |
| 22. S Djuric vs C Kosasih |
| ½-½ | 14 | 2001 | Wotulo Memorial | C78 Ruy Lopez |
| 23. T Dao vs C Kosasih |
| 1-0 | 42 | 2001 | Zone 3.2a | D17 Queen's Gambit Declined Slav |
| 24. C Kosasih vs H Bin Hashim |
| 1-0 | 43 | 2001 | Zone 3.2a | D43 Queen's Gambit Declined Semi-Slav |
| 25. E Handoko vs C Kosasih |
| ½-½ | 35 | 2001 | Zone 3.2a | C45 Scotch Game |
Kibitzing
