Jacek Tomczak vs Marcin Sieciechowicz
GM Jacek Tomczak (2545) · IM Marcin Sieciechowicz (2391)
Jacek Tomczak and Marcin Sieciechowicz have played 12 recorded games against each other, the first in Jul 2009 and the most recent in Apr 2024. Tomczak leads 6 wins to 1, with 5 draws (58% of the games were decisive). Their most common battleground is the Grünfeld Defense (2 games). The average game between them lasted 50 moves.
Results by color
| Split | Games | Tomczak | Draws | Sieciechowicz |
|---|---|---|---|---|
| Tomczak with White | 7 | 4 | 2 | 1 |
| Sieciechowicz with White | 5 | 2 | 3 | 0 |
Results by time format
| Format | Games | Tomczak | Draws | Sieciechowicz |
|---|---|---|---|---|
| Classical | 9 | 4 | 4 | 1 |
| Rapid | 3 | 2 | 1 | 0 |
Openings in their games
| ECO | Opening | Games | Tomczak | Draws | Sieciechowicz |
|---|---|---|---|---|---|
| D87 | Grünfeld Defense | 2 | 1 | 1 | 0 |
| B53 | Sicilian | 1 | 1 | 0 | 0 |
| B99 | Sicilian: Najdorf | 1 | 1 | 0 | 0 |
| C01 | French Defense | 1 | 0 | 1 | 0 |
| C11 | French: Classical Variation | 1 | 0 | 1 | 0 |
| C12 | French: Classical Variation | 1 | 1 | 0 | 0 |
| C18 | French: Winawer Variation | 1 | 1 | 0 | 0 |
| D97 | Grünfeld Defense | 1 | 0 | 1 | 0 |
All games
| Date | White | Black | Result | Opening | Event |
|---|---|---|---|---|---|
| Apr 2024 | Jacek Tomczak | Marcin Sieciechowicz | 1-0 | Sicilian: Najdorf | Katowice Silesia 100th Ann Open |
| Jun 2022 | Marcin Sieciechowicz | Jacek Tomczak | 1/2-1/2 | Grünfeld Defense | Bydgoszcz Open A |
| Mar 2022 | Jacek Tomczak | Marcin Sieciechowicz | 1/2-1/2 | French Defense | ch-POL Ekstraliga-A Rapid |
| Mar 2022 | Marcin Sieciechowicz | Jacek Tomczak | 0-1 | London System | ch-POL Ekstraliga-A Rapid |
| Sep 2021 | Jacek Tomczak | Marcin Sieciechowicz | 0-1 | King's Indian: Sämisch | POL-chT 1st League |
| Jul 2018 | Jacek Tomczak | Marcin Sieciechowicz | 1-0 | Sicilian | 16th Warsaw Najdorf Memorial Open A |
| Jul 2018 | Jacek Tomczak | Marcin Sieciechowicz | 1-0 | French: Classical Variation | 2nd Baltic Cup |
| Jun 2014 | Marcin Sieciechowicz | Jacek Tomczak | 1/2-1/2 | Bogo-Indian Defense | Chasing GM |
| Apr 2014 | Jacek Tomczak | Marcin Sieciechowicz | 1-0 | French: Winawer Variation | ch-POL rapid |
| Feb 2012 | Marcin Sieciechowicz | Jacek Tomczak | 1/2-1/2 | Grünfeld Defense | ch-POL |
| Nov 2011 | Jacek Tomczak | Marcin Sieciechowicz | 1/2-1/2 | French: Classical Variation | 27th Legnica Voivoda Cup |
| Jul 2009 | Marcin Sieciechowicz | Jacek Tomczak | 0-1 | Grünfeld Defense | Poznan Open A 18th |
Interactive board, all 12 games, opening explorer and engine analysis.
Browse the gamesFrequently asked questions
What is the head-to-head score between Jacek Tomczak and Marcin Sieciechowicz?
In 12 recorded games, Jacek Tomczak has 6 wins, Marcin Sieciechowicz has 1 wins, and they have drawn 5 times.
How many times have Jacek Tomczak and Marcin Sieciechowicz played each other?
Our database records 12 games between them, from Jul 2009 to Apr 2024.
What openings do Jacek Tomczak and Marcin Sieciechowicz play against each other?
The most common opening in their games is the Grünfeld Defense (2 games), followed by the Sicilian (1). The full opening breakdown and every game are on this page.