2 games · 2024–2025 · 2 classical · 0 online
De Boer 10 draws1 Kollen
50.0% for De Boer
Openings between them
| B61 | Sicilian Defense: Richter-Rauzer Variation, Modern Variation | 1 | 100.0% |
| E10 | Indian Defense: Anti-Nimzo-Indian | 1 | 0.0% |
All games
| Kollen, Z2379 | 0-1 | De Boer, Bas2205 | TCh-BEL 2025-26 | 2025 |
| De Boer, Bas2157 | 0-1 | Kollen, Z2344 | 60th Groningen Open 2024 | 2024 |