| 4. Runde am 11.07.2021 um 14:00 | ||||||||
| SNr | Name | Elo | Erg. | Name | Elo | SNr | ||
| 10 | FM | Arcuti Davide | 2354 | 1 - 0 | GM | Pelletier Yannick | 2591 | 7 |
| 8 | IM | Gaehwiler Gabriel | 2419 | ½ - ½ | WGM | Hakimifard Ghazal | 2314 | 6 |
| 9 | IM | Sedina Elena | 2308 | ½ - ½ | IM | Klauser Markus | 2419 | 5 |
| 1 | IM | Baenziger Fabian | 2382 | ½ - ½ | GM | Gallagher Joseph | 2454 | 4 |
| 2 | FM | Fecker Noah | 2318 | ½ - ½ | FM | Stijve Theo | 2290 | 3 |