| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. G Ligterink vs J Rooze |
| 0-1 | 21 |
1966 |
EU-ch U20 qual-C | B43 Sicilian, Kan, 5.Nc3 |
| 2. Timman vs G Ligterink |
| 1-0 | 25 |
1966 |
Delft ch-NED jr | A56 Benoni Defense |
| 3. Gligoric vs G Ligterink |
| 1-0 | 32 |
1966 |
EU-ch U20 clock sim1 | B99 Sicilian, Najdorf, 7...Be7 Main line |
| 4. G Ligterink vs S Pedersen |
| 1-0 | 39 |
1966 |
EU-ch U20 qual-C | B07 Pirc |
| 5. G Ligterink vs J Moles |
| ½-½ | 46 |
1967 |
EU-ch U18 f-A 6768 | E36 Nimzo-Indian, Classical |
| 6. G Ligterink vs Adorjan |
| ½-½ | 13 |
1967 |
EU-ch U18 sf 6768 | D92 Grunfeld, 5.Bf4 |
| 7. Karpov vs G Ligterink |
 | ½-½ | 12 |
1967 |
04, Groningen Ech-jr fin | B20 Sicilian |
| 8. G Ligterink vs J Moles |
| ½-½ | 27 |
1967 |
EU-ch U18 sf 6768 | E36 Nimzo-Indian, Classical |
| 9. J Lewi vs G Ligterink |
| ½-½ | 8 |
1967 |
EU-ch U18 sf 6768 | A17 English |
| 10. G Ligterink vs P E Hostalet Ferrer |
| 1-0 | 22 |
1967 |
EU-ch U18 sf 6768 | A81 Dutch |
| 11. G Ligterink vs D Zara |
| ½-½ | 57 |
1967 |
EU-ch U18 sf 6768 | D55 Queen's Gambit Declined |
| 12. D Ciric vs G Ligterink |
| 1-0 | 24 |
1967 |
EU-ch casual | B90 Sicilian, Najdorf |
| 13. R Meulders vs G Ligterink |
| 0-1 | 37 |
1967 |
EU-ch U18 sf 6768 | A46 Queen's Pawn Game |
| 14. Timman vs G Ligterink |
 | 1-0 | 19 |
1967 |
Groningen Ech-jr | E20 Nimzo-Indian |
| 15. P E Hostalet Ferrer vs G Ligterink |
 | 1-0 | 12 |
1967 |
Groningen | B50 Sicilian |
| 16. G Ligterink vs Adorjan |
| ½-½ | 13 |
1968 |
EU-ch U18 f-A 6768 | D92 Grunfeld, 5.Bf4 |
| 17. G Ligterink vs Karpov |
 | ½-½ | 27 |
1968 |
07, Groningen Ech-jr fin | D63 Queen's Gambit Declined, Orthodox Defense |
| 18. G Ligterink vs K Payrhuber |
| 1-0 | 44 |
1969 |
EU-ch U20 prel | A65 Benoni, 6.e4 |
| 19. J Juhnke vs G Ligterink |
| 1-0 | 24 |
1969 |
Wch U20 prel-E | B06 Robatsch |
| 20. G Ligterink vs E Torre |
| ½-½ | 57 |
1969 |
Wch U20 fin-B | E80 King's Indian, Samisch Variation |
| 21. G Ligterink vs B Vujacic |
| ½-½ | 19 |
1969 |
EU-ch U20 prel | A57 Benko Gambit |
| 22. G Ligterink vs H Schaufelberger |
| 0-1 | 30 |
1969 |
EU-ch U20 prel | A42 Modern Defense, Averbakh System |
| 23. A Lombard vs G Ligterink |
| ½-½ | 72 |
1969 |
EU-ch U20 prel | C91 Ruy Lopez, Closed |
| 24. G Ligterink vs Ermenkov |
| ½-½ | 19 |
1969 |
Wch U20 fin-B | D32 Queen's Gambit Declined, Tarrasch |
| 25. G Ligterink vs J Pokojowczyk |
| 1-0 | 34 |
1969 |
EU-ch U20 final-B | A44 Old Benoni Defense |