Jakub Kosakowski vs Olexandr Bortnyk
GM Jakub Kosakowski (2540) · GM Olexandr Bortnyk (2604)
Jakub Kosakowski and Olexandr Bortnyk have played 15 recorded games against each other, the first in Jun 2022 and the most recent in Jul 2026. Kosakowski leads 8 wins to 5, with 2 draws (87% of the games were decisive). Their most common battleground is the Réti Opening (3 games). The average game between them lasted 56 moves.
Results by color
| Split | Games | Kosakowski | Draws | Bortnyk |
|---|---|---|---|---|
| Kosakowski with White | 10 | 6 | 0 | 4 |
| Bortnyk with White | 5 | 2 | 2 | 1 |
Results by time format
| Format | Games | Kosakowski | Draws | Bortnyk |
|---|---|---|---|---|
| Blitz | 15 | 8 | 2 | 5 |
Openings in their games
| ECO | Opening | Games | Kosakowski | Draws | Bortnyk |
|---|---|---|---|---|---|
| A05 | Réti Opening | 3 | 1 | 0 | 2 |
| B03 | Alekhine Defense | 3 | 2 | 0 | 1 |
| A15 | English Opening: Double Fianchetto | 1 | 1 | 0 | 0 |
| A45 | Queen's Pawn Game: Chigorin Variation | 1 | 1 | 0 | 0 |
| A80 | Dutch Defense | 1 | 0 | 1 | 0 |
| D03 | Indian Defense | 1 | 1 | 0 | 0 |
| B10 | Caro-Kann | 1 | 1 | 0 | 0 |
| B20 | Sicilian | 1 | 0 | 1 | 0 |
All games
| Date | White | Black | Result | Opening | Event |
|---|---|---|---|---|---|
| Jul 2026 | Jakub Kosakowski | Olexandr Bortnyk | 1-0 | Réti Opening | 2nd 3-0 Thu 23rd Jul 2026 |
| Jul 2026 | Jakub Kosakowski | Olexandr Bortnyk | 0-1 | Réti Opening | Titled Tue 7th Jul 2026 |
| May 2026 | Jakub Kosakowski | Olexandr Bortnyk | 1-0 | English Opening: Double Fianchetto | Titled Tue 26th May 2026 |
| 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 15 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 15 recorded games, Jakub Kosakowski has 8 wins, Olexandr Bortnyk has 5 wins, and they have drawn 2 times.
How many times have Jakub Kosakowski and Olexandr Bortnyk played each other?
Our database records 15 games between them, from Jun 2022 to Jul 2026.
What openings do Jakub Kosakowski and Olexandr Bortnyk play against each other?
The most common opening in their games is the Réti Opening (3 games), followed by the Alekhine Defense (3). The full opening breakdown and every game are on this page.