Prepare against Marek Oslej
Slovakia · World #41,729 classical · FIDE ID 73613770
Our database contains 49 games by Marek Oslej, covering Jul 2016 to Jul 2026. Below you'll find Marek Oslej's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Marek Oslej 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 | 1,928 | 1,980 | Feb 2025 |
| Rapid | 1,555 | 1,555 | Jul 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 49 | 23 | 8 | 18 | 46.9% |
| As White | 25 | 13 | 5 | 7 | 52.0% |
| As Black | 24 | 10 | 3 | 11 | 41.7% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Marek Oslej's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Marek Oslej's side.
First moves as White (25 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 25 | 100.0% | 62.0% |
Main lines as White
- 1.e4 — 100% of White games, 62.0% score
- …e5 (32% of these games) — Oslej usually continues Nf3 (68.8% score)
- …c5 (20% of these games) — Oslej usually continues Nf3 (66.7% score)
- …e6 (16% of these games) — Oslej usually continues d4 (100.0% score)
As Black against 1.e4 (12 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 5 | 41.7% | 80.0% |
| c5 | 4 | 33.3% | 12.5% |
| e6 | 2 | 16.7% | 50.0% |
| c6 | 1 | 8.3% | 100.0% |
As Black against 1.d4 (9 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 6 | 66.7% | 66.7% |
| d5 | 2 | 22.2% | 50.0% |
| f5 | 1 | 11.1% | 0.0% |
Marek Oslej's chess games
All 49 games by Marek Oslej in the Chess.ceo database (Jul 2016 - 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: 23 wins, 8 draws, 18 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C50 | Italian Game | 3 | 2/0/1 | 66.7% |
| B00 | Owen Defense | 3 | 1/1/1 | 33.3% |
| C54 | Italian Game: Classical Variation | 2 | 1/1/0 | 50.0% |
| C10 | French Defense | 2 | 1/1/0 | 50.0% |
| B23 | Sicilian: Closed | 2 | 0/0/2 | 0.0% |
| B12 | Caro-Kann: Fantasy Variation | 2 | 2/0/0 | 100.0% |
| C90 | Ruy Lopez: Berlin Defense | 1 | 0/1/0 | 0.0% |
| B01 | Scandinavian Defense: Main Line | 1 | 0/0/1 | 0.0% |
| B40 | Sicilian | 1 | 1/0/0 | 100.0% |
| B51 | Sicilian: Moscow Variation | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B22 | Sicilian | 3 | 0/1/2 | 0.0% |
| D00 | Queen's Pawn Game | 2 | 1/0/1 | 50.0% |
| A45 | London System | 2 | 2/0/0 | 100.0% |
| D33 | English Opening | 2 | 0/0/2 | 0.0% |
| A43 | French Defense | 1 | 0/0/1 | 0.0% |
| A48 | Indian Defense | 1 | 0/1/0 | 0.0% |
| C53 | Italian Game: Classical Variation | 1 | 1/0/0 | 100.0% |
| E32 | Nimzo-Indian: Classical Variation | 1 | 0/0/1 | 0.0% |
| E24 | Nimzo-Indian: Sämisch Variation | 1 | 0/1/0 | 0.0% |
| D38 | Queen's Gambit Declined: Ragozin Defense | 1 | 1/0/0 | 100.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Apr 2024 | Maros Volanek | 1,822 | ch-SVK U18/20 | C18 |
| Aug 2023 | Marian Hrubsa | 1,754 | Skalica Open B | C11 |
| Aug 2023 | Michal Ciglian | 1,698 | Skalica Open B | B19 |
| Apr 2024 | Samuel Piroska | 1,667 | ch-SVK U18/20 | B12 |
| Aug 2023 | Mikulas Hladky | 1,642 | Skalica Open B | B45 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-SVK U18/20 | 2024 | 9 | 4 | 1,881 |
| Skalica Open B | 2023 | 8 | 4.5 | 1,781 |
| chT5-SVK 1718 | 2018 | 8 | 6 | 1,386 |
| chT3A2-SVK 2223 | 2023 | 6 | 3 | 1,524 |
| chT2A-SVK 2324 | 2024 | 5 | 1 | 1,578 |
| chT-SVK 4 A21 2223 | 2023 | 4 | 3 | 1,591 |
| chT5-SVK SE-SI 1920 | 2020 | 3 | 1.5 | 1,330 |
| chT4-SVK A21 1819 | 2019 | 3 | 1 | 1,148 |
Interactive opening tree from all 49 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Marek Oslej's chess games?
49 games by Marek Oslej, from Jul 2016 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 Marek Oslej has played.
What does Marek Oslej play on the first move as White?
Across 25 games with White in our database, Marek Oslej opens with 1.e4 (100% of games). Against 1.e4 as Black, Marek Oslej answers 1...e5 (42% of games), 1...c5 (33% of games), 1...e6 (17% of games). Against 1.d4: 1...Nf6 (67% of games), 1...d5 (22% of games), 1...f5 (11% of games).
What openings does Marek Oslej play as White?
As White, Marek Oslej's most-played openings in our database are: Italian Game (3 games, 66.7% win rate); Owen Defense (3 games, 33.3% win rate); Italian Game: Classical Variation (2 games, 50.0% win rate). The full breakdown of 25 games with White is in the table above.
What openings does Marek Oslej play as Black?
As Black, Marek Oslej most often plays: Sicilian (3 games, 0.0% win rate); Queen's Pawn Game (2 games, 50.0% win rate); London System (2 games, 100.0% win rate). See the table above for the top ten Black openings across 24 games.
What is Marek Oslej's FIDE rating?
Marek Oslej is currently rated 1,928 in classical chess, 1,555 in rapid. Peak classical rating: 1,980 (Feb 2025).
How many games has Marek Oslej played?
Our database contains 49 games by Marek Oslej, covering Jul 2016 to Jul 2026. Overall record: 23 wins, 8 draws, 18 losses (46.9% win rate).
How do I prepare against Marek Oslej?
49 games by Marek Oslej 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.