Prepare against Mariusz Olczak
Poland · World #75,655 classical · FIDE ID 21039453
When preparing against Mariusz Olczak, expect 1.d4 in 89% of White games. Against 1.e4 the reply is 1...e5 (100% of games); against 1.d4, 1...Nf6 (67%).
Our database contains 52 games by Mariusz Olczak, covering Sep 2018 to Aug 2026. Below you'll find Mariusz Olczak's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Mariusz Olczak 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 | 1,803 | 1,844 | Nov 2025 |
| Rapid | 1,761 | 1,781 | Aug 2024 |
| Blitz | 1,714 | 1,739 | Oct 2024 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 52 | 19 | 9 | 24 | 36.5% |
| As White | 28 | 15 | 5 | 8 | 53.6% |
| As Black | 24 | 4 | 4 | 16 | 16.7% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Mariusz Olczak's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Mariusz Olczak's side.
First moves as White (28 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 25 | 89.3% | 64.0% |
| e4 | 3 | 10.7% | 50.0% |
Main lines as White
- 1.d4 — 89% of White games, 64.0% score
- …Nf6 (56% of these games) — Olczak usually continues Nf3 (50.0% score)
- …d5 (24% of these games) — Olczak usually continues Nf3 (83.3% score)
- …g6 (4% of these games) — Olczak usually continues Nf3 (50.0% score)
- 1.e4 — 11% of White games, 50.0% score
- …e5 (67% of these games) — Olczak usually continues Nf3 (75.0% score)
- …c5 (33% of these games) — Olczak usually continues c3 (0.0% score)
As Black against 1.e4 (14 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 14 | 100.0% | 25.0% |
As Black against 1.d4 (6 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 4 | 66.7% | 25.0% |
| d5 | 2 | 33.3% | 25.0% |
Mariusz Olczak's chess games
All 52 games by Mariusz Olczak in the Chess.ceo database (Sep 2018 - Aug 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: 19 wins, 9 draws, 24 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D02 | Queen's Pawn Game | 8 | 7/0/1 | 87.5% |
| A49 | King's Indian Defense: Fianchetto Variation | 8 | 4/0/4 | 50.0% |
| A46 | Indian Defense | 4 | 1/2/1 | 25.0% |
| C50 | Italian Game | 2 | 1/1/0 | 50.0% |
| A30 | Queen's Indian Defense | 1 | 0/0/1 | 0.0% |
| A90 | Dutch Defense | 1 | 1/0/0 | 100.0% |
| B00 | Sicilian: Alapin | 1 | 0/0/1 | 0.0% |
| A40 | Englund Gambit | 1 | 1/0/0 | 100.0% |
| A95 | Horwitz Defense | 1 | 0/1/0 | 0.0% |
| A40 | Modern Defense | 1 | 0/1/0 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C84 | Ruy Lopez: Closed | 4 | 0/1/3 | 0.0% |
| C45 | Scotch Game | 4 | 0/0/4 | 0.0% |
| D34 | Indian Defense | 3 | 1/0/2 | 33.3% |
| A45 | London System | 2 | 0/0/2 | 0.0% |
| A13 | English Opening | 2 | 1/0/1 | 50.0% |
| C11 | Richter-Veresov Attack | 1 | 0/0/1 | 0.0% |
| C77 | Ruy Lopez: Morphy Defense | 1 | 1/0/0 | 100.0% |
| C87 | Ruy Lopez: Steinitz Defense Deferred | 1 | 0/1/0 | 0.0% |
| C55 | Bishop's Opening | 1 | 0/0/1 | 0.0% |
| C55 | Vienna Game | 1 | 0/0/1 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jan 1993 | Michal Styblo | 2,310 | Pardubice GPilt Open | C50 |
| Aug 2026 | Marek Kruczynski | 1,879 | Rubinstein Chess Festival 2026 - Open E | C30 |
| Aug 2024 | Michal Trebala | 1,729 | Wroclaw Anderssen Memorial Open | D37 |
| Jul 2022 | Pawel Kocierz | 1,715 | Wroclaw Anderssen Memorial Open | A39 |
| Jul 2021 | Dominik Krawiec | 1,699 | Wroclaw Anderssen Memorial Open | D02 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Wroclaw Anderssen Memorial Open | 2024 | 24 | 10 | 1,626 |
| Adolf Anderssen Mem | 2025 | 8 | 4 | 1,764 |
| Adolf Anderssen Mem 2026 | 2026 | 8 | 4.5 | 1,882 |
| Rubinstein Chess Festival 2026 - Open E | 2026 | 6 | 2.5 | 1,819 |
| Pardubice GPilt Open | 1993 | 3 | 2 | 2,425 |
| Pardubice Open 2 | 1994 | 2 | 0.5 | – |
| Adolf Anderssen Chess Festival 2026 - Rapid | 2026 | 1 | 0 | 2,171 |
Interactive opening tree from all 52 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Mariusz Olczak's chess games?
52 games by Mariusz Olczak, from Sep 2018 to Aug 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 Mariusz Olczak has played.
What does Mariusz Olczak play on the first move as White?
Across 28 games with White in our database, Mariusz Olczak opens with 1.d4 (89% of games), 1.e4 (11% of games). Against 1.e4 as Black, Mariusz Olczak answers 1...e5 (100% of games). Against 1.d4: 1...Nf6 (67% of games), 1...d5 (33% of games).
What openings does Mariusz Olczak play as White?
As White, Mariusz Olczak's most-played openings in our database are: Queen's Pawn Game (8 games, 87.5% win rate); King's Indian Defense: Fianchetto Variation (8 games, 50.0% win rate); Indian Defense (4 games, 25.0% win rate). The full breakdown of 28 games with White is in the table above.
What openings does Mariusz Olczak play as Black?
As Black, Mariusz Olczak most often plays: Ruy Lopez: Closed (4 games, 0.0% win rate); Scotch Game (4 games, 0.0% win rate); Indian Defense (3 games, 33.3% win rate). See the table above for the top ten Black openings across 24 games.
What is Mariusz Olczak's FIDE rating?
Mariusz Olczak is currently rated 1,803 in classical chess, 1,761 in rapid and 1,714 in blitz. Peak classical rating: 1,844 (Nov 2025).
How many games has Mariusz Olczak played?
Our database contains 52 games by Mariusz Olczak, covering Sep 2018 to Aug 2026. Overall record: 19 wins, 9 draws, 24 losses (36.5% win rate).
How do I prepare against Mariusz Olczak?
52 games by Mariusz Olczak 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.