3 games · 2020–2026 · 2 classical · 1 online
Grieve 11 draws1 Ostrovskiy
50.0% for Grieve
Openings between them
| B12 | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | 1 | 0.0% |
| B13 | Caro-Kann Defense: Exchange Variation | 1 | 50.0% |
| C60 | Ruy Lopez: Fianchetto Defense | 1 | 100.0% |
All games
| Grieve, Harry2489 | 1-0 | Ostrovskiy, Al2356 | SixDays Budapest May GM-A | 2026 |
| Grieve, Harry2456 | ½-½ | Ostrovskiy, Al2403 | III Colonia GM 2024 | 2024 |
| Grieve, Harry2351 | 0-1 | Ostrovskiy, Al2427 | Titled Tuesday 3rd Nov | 2020 |