| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. D Dunne vs L Arnold |
| 1-0 | 60 |
1976 |
Wch U16 | B33 Sicilian |
| 2. L Arnold vs Petursson |
| 0-1 | 73 |
1976 |
Wch U16 | B84 Sicilian, Scheveningen |
| 3. L Arnold vs T Natsis |
 | 1-0 | 19 |
1978 |
Groningen | B30 Sicilian |
| 4. R Busch vs L Arnold |
| 0-1 | 52 |
1980 |
Mosbach Elo | A67 Benoni, Taimanov Variation |
| 5. G Kiefer vs L Arnold |
| 0-1 | 56 |
1980 |
Baden-ch MA | B29 Sicilian, Nimzovich-Rubinstein |
| 6. H Kaenel vs L Arnold |
| 0-1 | 59 |
1985 |
Baden-SUI tt | A04 Reti Opening |
| 7. M Heidrich vs L Arnold |
| 0-1 | 30 |
1985 |
Baden-Bayern tt | B29 Sicilian, Nimzovich-Rubinstein |
| 8. L Arnold vs M Heidrich |
| 1-0 | 24 |
1985 |
Baden-Bayern tt | B29 Sicilian, Nimzovich-Rubinstein |
| 9. L Arnold vs Smejkal |
| 0-1 | 66 |
1986 |
Bundesliga 8687 | C68 Ruy Lopez, Exchange |
| 10. L Arnold vs Short |
| 0-1 | 34 |
1987 |
BL 8687 ;BL | C05 French, Tarrasch |
| 11. Chandler vs L Arnold |
| 1-0 | 40 |
1987 |
Bundesliga 1986/87 | B29 Sicilian, Nimzovich-Rubinstein |
| 12. P Haba vs L Arnold |
| 1-0 | 61 |
1991 |
BL2-S 9192 | C02 French, Advance |
| 13. K Mokry vs L Arnold |
| 1-0 | 50 |
1991 |
BL2-S 9192 | B42 Sicilian, Kan |
| 14. V Tukmakov vs L Arnold |
| 1-0 | 55 |
1994 |
Zuerich op | A40 Queen's Pawn Game |
| 15. L Arnold vs Pavasovic |
| ½-½ | 40 |
1994 |
Zuerich op | B32 Sicilian |
| 16. L Arnold vs Pachman |
| ½-½ | 18 |
1995 |
2nd | C11 French |
| 17. L Arnold vs J Stocek |
| 0-1 | 58 |
1996 |
Budapest FS08 GM | B85 Sicilian, Scheveningen, Classical |
| 18. Ftacnik vs L Arnold |
| 1-0 | 29 |
1997 |
Bundesliga 1996/97, Germany | D20 Queen's Gambit Accepted |
| 19. K Darga vs L Arnold |
| 1-0 | 40 |
1997 |
BL2-S 9798 | A28 English |
| 20. L Arnold vs M Turov |
 | 0-1 | 41 |
1997 |
Budapest FS08 GM | B16 Caro-Kann, Bronstein-Larsen Variation |
| 21. N Eliet vs L Arnold |
| ½-½ | 31 |
2001 |
TCh-FRA | D27 Queen's Gambit Accepted, Classical |
| 22. P Lukacs vs L Arnold |
| 1-0 | 39 |
2001 |
FSGM August | D27 Queen's Gambit Accepted, Classical |
| 23. L Arnold vs A Szeberenyi |
| ½-½ | 43 |
2001 |
FSGM August | B92 Sicilian, Najdorf, Opocensky Variation |
| 24. L Arnold vs T Polak |
| ½-½ | 40 |
2001 |
VI Cup GM | B00 Uncommon King's Pawn Opening |
| 25. Y Dembo vs L Arnold |
| ½-½ | 34 |
2001 |
FSGM August | C05 French, Tarrasch |