4 games · 2017–2026 · 4 classical · 0 online
Birkisson 21 draws1 Ptacnikova
62.5% for Birkisson
Openings between them
| A13 | English Opening: Agincourt Defense, Wimpy System | 1 | 0.0% |
| B00 | Nimzowitsch Defense: Williams Variation | 1 | 50.0% |
| B10 | Caro-Kann Defense: Two Knights Attack | 1 | 100.0% |
| B23 | Sicilian Defense: Closed, Chameleon Variation | 1 | 100.0% |
All games
| Ptacnikova, L2126 | 0-1 | Birkisson, Bjorn Holm2214 | ch-ISL 2026 | 2026 |
| Ptacnikova, L2187 | 1-0 | Birkisson, Bjorn Holm2078 | Reykjavik Congress 2019 | 2019 |
| Birkisson, Bjorn Holm2084 | 1-0 | Ptacnikova, L2218 | Reykjavik Congress 2018 | 2018 |
| Ptacnikova, L2232 | ½-½ | Birkisson, Bjorn Holm2002 | Northern Lights Open 2017 | 2017 |