4 games · 2017–2019 · 4 classical · 0 online
Klaasen 22 draws0 Hercules
75.0% for Klaasen
Openings between them
| E05 | Catalan Opening: Open Defense, Classical Line | 1 | 50.0% |
| E06 | Catalan Opening: Closed | 1 | 50.0% |
| E17 | Queen's Indian Defense: Fianchetto Variation, Kramnik Variation | 1 | 100.0% |
| E73 | King's Indian Defense: Averbakh Variation, Modern Defense | 1 | 100.0% |
All games
| Klaasen, C2247 | ½-½ | Hercules, B2209 | ch-RSA 2019 | 2019 |
| Hercules, B2162 | 0-1 | Klaasen, C2282 | Capablanca Festival IM | 2019 |
| Hercules, B2155 | 0-1 | Klaasen, C2311 | ch-RSA 2017 | 2017 |
| Klaasen, C2226 | ½-½ | Hercules, B2163 | PSS IM Norm 2017 | 2017 |