Jakub Kosakowski vs Olexandr Bortnyk
GM Jakub Kosakowski (2543) · GM Olexandr Bortnyk (2604)
Jakub Kosakowski and Olexandr Bortnyk have played 12 recorded games against each other, the first in Jun 2022 and the most recent in Mar 2026. Kosakowski leads 6 wins to 4, with 2 draws (83% of the games were decisive). Their most common battleground is the Alekhine Defense (3 games). The average game between them lasted 55 moves.
Results by color
| Split | Games | Kosakowski | Draws | Bortnyk |
|---|---|---|---|---|
| Kosakowski with White | 7 | 4 | 0 | 3 |
| Bortnyk with White | 5 | 2 | 2 | 1 |
Results by time format
| Format | Games | Kosakowski | Draws | Bortnyk |
|---|---|---|---|---|
| Blitz | 12 | 6 | 2 | 4 |
Openings in their games
| ECO | Opening | Games | Kosakowski | Draws | Bortnyk |
|---|---|---|---|---|---|
| B03 | Alekhine Defense | 3 | 2 | 0 | 1 |
| A15 | English Opening | 1 | 0 | 0 | 1 |
| A45 | Queen's Pawn Game: Chigorin Variation | 1 | 1 | 0 | 0 |
| A80 | Dutch Defense | 1 | 0 | 1 | 0 |
| B10 | Caro-Kann | 1 | 1 | 0 | 0 |
| B20 | Sicilian | 1 | 0 | 1 | 0 |
| C41 | Pirc Defense: Lion System | 1 | 1 | 0 | 0 |
| D00 | Queen's Pawn Game: Chigorin Variation | 1 | 0 | 0 | 1 |
All games
| Date | White | Black | Result | Opening | Event |
|---|---|---|---|---|---|
| Mar 2026 | Jakub Kosakowski | Olexandr Bortnyk | 0-1 | Réti Opening | 1st 3-0 Thursday |
| Feb 2026 | Jakub Kosakowski | Olexandr Bortnyk | 0-1 | English Opening | 2nd 3-0 Thursday |
| Nov 2025 | Olexandr Bortnyk | Jakub Kosakowski | 0-1 | Caro-Kann | Titled Tue |
| Sep 2025 | Jakub Kosakowski | Olexandr Bortnyk | 1-0 | Alekhine Defense | Titled Tue |
| Aug 2025 | Olexandr Bortnyk | Jakub Kosakowski | 1/2-1/2 | Dutch Defense | Titled Tue Late |
| Apr 2025 | Jakub Kosakowski | Olexandr Bortnyk | 1-0 | Alekhine Defense | Titled Tue Late |
| Apr 2025 | Jakub Kosakowski | Olexandr Bortnyk | 0-1 | Alekhine Defense | Titled Tue Late |
| Mar 2025 | Olexandr Bortnyk | Jakub Kosakowski | 0-1 | Queen's Pawn Game: Chigorin Variation | Titled Tue Late |
| Jan 2025 | Olexandr Bortnyk | Jakub Kosakowski | 1/2-1/2 | Sicilian | Titled Tue Late |
| Sep 2024 | Olexandr Bortnyk | Jakub Kosakowski | 1-0 | Queen's Pawn Game: Chigorin Variation | Titled Tue Early |
| May 2023 | Jakub Kosakowski | Olexandr Bortnyk | 1-0 | Indian Defense | Titled Tue Late |
| Jun 2022 | Jakub Kosakowski | Olexandr Bortnyk | 1-0 | Pirc Defense: Lion System | Titled Tue Early |
Interactive board, all 12 games, opening explorer and engine analysis.
Browse the gamesFrequently asked questions
What is the head-to-head score between Jakub Kosakowski and Olexandr Bortnyk?
In 12 recorded games, Jakub Kosakowski has 6 wins, Olexandr Bortnyk has 4 wins, and they have drawn 2 times.
How many times have Jakub Kosakowski and Olexandr Bortnyk played each other?
Our database records 12 games between them, from Jun 2022 to Mar 2026.
What openings do Jakub Kosakowski and Olexandr Bortnyk play against each other?
The most common opening in their games is the Alekhine Defense (3 games), followed by the English Opening (1). The full opening breakdown and every game are on this page.