Prepare against Mikolaj Kowalczuk
Poland · World #25,547 classical · FIDE ID 1128671
Our database contains 79 games by Mikolaj Kowalczuk, covering Apr 2009 to Jul 2026. Below you'll find Mikolaj Kowalczuk's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Mikolaj Kowalczuk before a game. You can open the same data in the free interactive preparation workstation, which builds a move-by-move opening tree from every game.
Ratings
| Time control | Current | Peak | Peak date |
|---|---|---|---|
| Classical | 2,014 | 2,029 | Feb 2023 |
| Rapid | 1,994 | 1,994 | Jul 2026 |
| Blitz | 1,948 | 2,019 | Jun 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 79 | 28 | 16 | 35 | 35.4% |
| As White | 40 | 15 | 9 | 16 | 37.5% |
| As Black | 39 | 13 | 7 | 19 | 33.3% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Mikolaj Kowalczuk's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Mikolaj Kowalczuk's side.
First moves as White (40 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 34 | 85.0% | 51.5% |
| e4 | 4 | 10.0% | 37.5% |
| c4 | 1 | 2.5% | 0.0% |
| Nf3 | 1 | 2.5% | 50.0% |
Main lines as White
- 1.d4 — 85% of White games, 51.5% score
- …Nf6 (62% of these games) — Kowalczuk usually continues c4 (50.0% score)
- …d5 (35% of these games) — Kowalczuk usually continues c4 (68.2% score)
- …c5 (3% of these games) — Kowalczuk usually continues d5 (50.0% score)
- 1.e4 — 10% of White games, 37.5% score
- …c5 (50% of these games) — Kowalczuk usually continues d4 (50.0% score)
- …e6 (25% of these games) — Kowalczuk usually continues Qe2 (50.0% score)
- …Nf6 (25% of these games) — Kowalczuk usually continues Nc3 (0.0% score)
As Black against 1.e4 (20 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 17 | 85.0% | 47.1% |
| e6 | 3 | 15.0% | 0.0% |
As Black against 1.d4 (12 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 12 | 100.0% | 50.0% |
Mikolaj Kowalczuk's chess games
All 79 games by Mikolaj Kowalczuk in the Chess.ceo database (Apr 2009 - Jul 2026) are free to browse, search and replay: filter by opening, opponent, event or date on the player page, or step through any game on the analysis board. Record: 28 wins, 16 draws, 35 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D37 | Indian Defense | 7 | 3/1/3 | 42.9% |
| A56 | Benoni Defense | 5 | 2/2/1 | 40.0% |
| A45 | London System | 4 | 0/1/3 | 0.0% |
| D45 | Slav Defense | 4 | 2/0/2 | 50.0% |
| D53 | Queen's Gambit Declined | 3 | 3/0/0 | 100.0% |
| A57 | King's Indian Defense: Orthodox Variation | 2 | 1/0/1 | 50.0% |
| A52 | Budapest Defense | 2 | 0/1/1 | 0.0% |
| E32 | Nimzo-Indian: Classical Variation | 2 | 1/0/1 | 50.0% |
| E40 | Nimzo-Indian: Rubinstein System | 2 | 0/1/1 | 0.0% |
| B21 | Sicilian: Smith-Morra Gambit | 2 | 1/0/1 | 50.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B88 | Sicilian: Najdorf | 8 | 3/1/4 | 37.5% |
| A57 | Benoni Defense | 6 | 4/0/2 | 66.7% |
| A24 | English Opening | 5 | 0/3/2 | 0.0% |
| A21 | English Opening: Reverse Sicilian | 3 | 1/1/1 | 33.3% |
| B53 | Sicilian | 3 | 1/0/2 | 33.3% |
| B25 | Sicilian: Closed | 2 | 2/0/0 | 100.0% |
| A32 | Indian Defense | 2 | 0/0/2 | 0.0% |
| B35 | Sicilian: Accelerated Dragon | 1 | 0/0/1 | 0.0% |
| B22 | Sicilian: Alapin | 1 | 0/0/1 | 0.0% |
| B52 | Sicilian: Moscow Variation | 1 | 0/1/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Dec 2010 | Marcin Bernat | 2,170 | chT-POL3 2010/11 | E32 |
| Mar 2010 | Radoslaw Szusterowski | 2,069 | ch-POL U18 | A77 |
| Mar 2010 | Maciej Koziej | 2,010 | ch-POL U18 | D07 |
| Jan 2011 | Miroslaw Sobczak | 1,975 | chT-POL3 2010/11 | B96 |
| Jan 2012 | Robert Mantorski | 1,961 | chT3-POL Wielkopolska 1112 | E10 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| chT-POL3 2010/11 | 2011 | 11 | 5 | 1,976 |
| chT3-POL Wielkopolska 1112 | 2012 | 11 | 6 | 1,970 |
| ch-POL U18 | 2010 | 11 | 6 | 2,052 |
| 21st Poznan Open | 2011 | 9 | 4.5 | 1,676 |
| POL-chT U19 2nd League | 2010 | 9 | 6 | 1,861 |
| Wroclaw Anderssen Memorial Open | 2020 | 8 | 1 | 1,898 |
| chT-POL 3rd League Wielkopolska 12/13 | 2013 | 7 | 3.5 | 1,890 |
| ch-POL Liga3 U18 | 2009 | 5 | 2.5 | 1,707 |
Interactive opening tree from all 79 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Mikolaj Kowalczuk's chess games?
79 games by Mikolaj Kowalczuk, from Apr 2009 to Jul 2026, are free to browse and replay move by move — no signup needed. The preparation view groups them into an opening tree showing every line Mikolaj Kowalczuk has played.
What does Mikolaj Kowalczuk play on the first move as White?
Across 40 games with White in our database, Mikolaj Kowalczuk opens with 1.d4 (85% of games), 1.e4 (10% of games), 1.c4 (3% of games). Against 1.e4 as Black, Mikolaj Kowalczuk answers 1...c5 (85% of games), 1...e6 (15% of games). Against 1.d4: 1...Nf6 (100% of games).
What openings does Mikolaj Kowalczuk play as White?
As White, Mikolaj Kowalczuk's most-played openings in our database are: Indian Defense (7 games, 42.9% win rate); Benoni Defense (5 games, 40.0% win rate); London System (4 games, 0.0% win rate). The full breakdown of 40 games with White is in the table above.
What openings does Mikolaj Kowalczuk play as Black?
As Black, Mikolaj Kowalczuk most often plays: Sicilian: Najdorf (8 games, 37.5% win rate); Benoni Defense (6 games, 66.7% win rate); English Opening (5 games, 0.0% win rate). See the table above for the top ten Black openings across 39 games.
What is Mikolaj Kowalczuk's FIDE rating?
Mikolaj Kowalczuk is currently rated 2,014 in classical chess, 1,994 in rapid and 1,948 in blitz. Peak classical rating: 2,029 (Feb 2023).
How many games has Mikolaj Kowalczuk played?
Our database contains 79 games by Mikolaj Kowalczuk, covering Apr 2009 to Jul 2026. Overall record: 28 wins, 16 draws, 35 losses (35.4% win rate).
How do I prepare against Mikolaj Kowalczuk?
79 games by Mikolaj Kowalczuk reveal their opening repertoire, most-played lines, and the variations where they score worst — the raw material for targeted preparation. The interactive opening tree lets you walk every line to any depth.