Prepare against Ondrej Mejzlik
FM · Czechia · World #8,806 classical · FIDE ID 319562
Our database contains 438 games by Ondrej Mejzlik, covering Jul 2003 to Jul 2026. Below you'll find Ondrej Mejzlik's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Ondrej Mejzlik 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 | 2,189 | 2,351 | Dec 2022 |
| Rapid | 2,321 | 2,321 | Jul 2026 |
| Blitz | 2,306 | 2,334 | Dec 2016 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 438 | 171 | 141 | 126 | 39.0% |
| As White | 224 | 89 | 78 | 57 | 39.7% |
| As Black | 214 | 82 | 63 | 69 | 38.3% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Ondrej Mejzlik's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Ondrej Mejzlik's side.
First moves as White (224 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c4 | 212 | 94.6% | 57.1% |
| e4 | 12 | 5.4% | 58.3% |
Main lines as White
- 1.c4 — 95% of White games, 57.1% score
- …Nf6 (30% of these games) — Mejzlik usually continues Nc3 (65.3% score)
- …e5 (26% of these games) — Mejzlik usually continues Nc3 (54.8% score)
- …e6 (13% of these games) — Mejzlik usually continues Nc3 (59.6% score)
- 1.e4 — 5% of White games, 58.3% score
- …e5 (83% of these games) — Mejzlik usually continues Nf3 (60.0% score)
- …e6 (8% of these games) — Mejzlik usually continues d4 (100.0% score)
- …c5 (8% of these games) — Mejzlik usually continues c3 (0.0% score)
As Black against 1.e4 (129 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c6 | 80 | 62.0% | 54.4% |
| e5 | 21 | 16.3% | 54.8% |
| e6 | 17 | 13.2% | 55.9% |
| d5 | 11 | 8.5% | 50.0% |
As Black against 1.d4 (51 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 39 | 76.5% | 44.9% |
| f5 | 9 | 17.6% | 50.0% |
| e6 | 3 | 5.9% | 100.0% |
Ondrej Mejzlik's chess games
All 438 games by Ondrej Mejzlik in the Chess.ceo database (Jul 2003 - 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: 171 wins, 141 draws, 126 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A29 | English Opening: Reverse Sicilian | 65 | 25/22/18 | 38.5% |
| A36 | English Opening | 55 | 23/19/13 | 41.8% |
| A36 | English Opening: Symmetrical | 27 | 13/7/7 | 48.1% |
| A21 | Modern Defense | 15 | 4/6/5 | 26.7% |
| A18 | English Opening: Mikenas Variation | 15 | 5/7/3 | 33.3% |
| D13 | English Opening: Slav Setup | 9 | 3/3/3 | 33.3% |
| D45 | Slav Defense | 7 | 0/6/1 | 0.0% |
| D37 | Indian Defense | 6 | 3/2/1 | 50.0% |
| A89 | English Opening: Dutch Defense | 4 | 2/1/1 | 50.0% |
| C50 | Italian Game | 4 | 2/1/1 | 50.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B17 | Caro-Kann: Karpov Variation | 30 | 12/8/10 | 40.0% |
| B13 | Caro-Kann: Exchange Variation | 21 | 8/5/8 | 38.1% |
| D10 | Slav Defense | 18 | 5/4/9 | 27.8% |
| A25 | English Opening: Reverse Sicilian | 13 | 5/6/2 | 38.5% |
| B12 | Caro-Kann: Advance Variation | 13 | 6/2/5 | 46.2% |
| B01 | Scandinavian Defense: Main Line | 11 | 4/3/4 | 36.4% |
| A85 | Queen's Pawn Game | 10 | 3/2/5 | 30.0% |
| A80 | Dutch Defense | 9 | 3/3/3 | 33.3% |
| B10 | Caro-Kann | 8 | 4/4/0 | 50.0% |
| A84 | Queen's Gambit Declined | 7 | 4/1/2 | 57.1% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Aug 2013 | Marek Vokac | 2,458 | Ricany Open | A36 |
| Nov 2019 | Jakub Pulpan | 2,421 | chT1W-CZE 1920 | A07 |
| Aug 2008 | Tomas Vojta | 2,411 | Ricany Open A | B12 |
| Jan 2022 | Svatopluk Svoboda | 2,409 | chT1W-CZE 2122 | B13 |
| Feb 2014 | Petr Spacek | 2,398 | chT2C-CZE 1314 | D43 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Ricany Open | 2015 | 44 | 31.5 | 2,302 |
| Klatovy Open A | 2002 | 27 | 14 | 2,033 |
| Litomysl Open | 2005 | 18 | 7 | 2,133 |
| ch-CZE U12 | 1999 | 17 | 11.5 | – |
| ch-CZE U10 | 1997 | 17 | 12 | – |
| ch-CZE U14 | 2001 | 16 | 8 | 1,810 |
| chT2C-CZE 1415 | 2015 | 11 | 5.5 | 2,336 |
| chT2A-CZE 2223 | 2023 | 11 | 7.5 | 2,336 |
Interactive opening tree from all 438 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Ondrej Mejzlik's chess games?
438 games by Ondrej Mejzlik, from Jul 2003 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 Ondrej Mejzlik has played.
What does Ondrej Mejzlik play on the first move as White?
Across 224 games with White in our database, Ondrej Mejzlik opens with 1.c4 (95% of games), 1.e4 (5% of games). Against 1.e4 as Black, Ondrej Mejzlik answers 1...c6 (62% of games), 1...e5 (16% of games), 1...e6 (13% of games). Against 1.d4: 1...d5 (76% of games), 1...f5 (18% of games), 1...e6 (6% of games).
What openings does Ondrej Mejzlik play as White?
As White, Ondrej Mejzlik's most-played openings in our database are: English Opening: Reverse Sicilian (65 games, 38.5% win rate); English Opening (55 games, 41.8% win rate); English Opening: Symmetrical (27 games, 48.1% win rate). The full breakdown of 224 games with White is in the table above.
What openings does Ondrej Mejzlik play as Black?
As Black, Ondrej Mejzlik most often plays: Caro-Kann: Karpov Variation (30 games, 40.0% win rate); Caro-Kann: Exchange Variation (21 games, 38.1% win rate); Slav Defense (18 games, 27.8% win rate). See the table above for the top ten Black openings across 214 games.
What is Ondrej Mejzlik's FIDE rating?
Ondrej Mejzlik is currently rated 2,189 in classical chess, 2,321 in rapid and 2,306 in blitz. Peak classical rating: 2,351 (Dec 2022).
How many games has Ondrej Mejzlik played?
Our database contains 438 games by Ondrej Mejzlik, covering Jul 2003 to Jul 2026. Overall record: 171 wins, 141 draws, 126 losses (39.0% win rate).
How do I prepare against Ondrej Mejzlik?
438 games by Ondrej Mejzlik 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.