Prepare against Mark Dejmek
United States · World #38,052 classical · FIDE ID 2017628
Our database contains 226 games by Mark Dejmek, covering Apr 2003 to Jul 2026. Below you'll find Mark Dejmek's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Mark Dejmek 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 | 1,944 | 2,185 | Apr 2006 |
| Rapid | 2,065 | 2,065 | Jul 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 226 | 53 | 45 | 128 | 23.5% |
| As White | 111 | 30 | 21 | 60 | 27.0% |
| As Black | 115 | 23 | 24 | 68 | 20.0% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Mark Dejmek's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Mark Dejmek's side.
First moves as White (111 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 62 | 55.9% | 51.6% |
| Nf3 | 49 | 44.1% | 17.3% |
Main lines as White
- 1.e4 — 56% of White games, 51.6% score
- …c5 (42% of these games) — Dejmek usually continues Nf3 (47.6% score)
- …e5 (19% of these games) — Dejmek usually continues Nf3 (54.5% score)
- …c6 (13% of these games) — Dejmek usually continues d4 (40.0% score)
- 1.Nf3 — 44% of White games, 17.3% score
- …Nf6 (49% of these games) — Dejmek usually continues g3 (17.4% score)
- …d5 (33% of these games) — Dejmek usually continues c4 (20.8% score)
- …d6 (6% of these games) — Dejmek usually continues d4 (33.3% score)
As Black against 1.e4 (58 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 32 | 55.2% | 14.1% |
| c5 | 26 | 44.8% | 44.2% |
As Black against 1.d4 (38 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 34 | 89.5% | 39.7% |
| f5 | 4 | 10.5% | 37.5% |
Mark Dejmek's chess games
All 226 games by Mark Dejmek in the Chess.ceo database (Apr 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: 53 wins, 45 draws, 128 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A09 | Réti Opening | 33 | 5/0/28 | 15.2% |
| B99 | Sicilian: Najdorf | 8 | 3/2/3 | 37.5% |
| B21 | Sicilian | 6 | 3/1/2 | 50.0% |
| B03 | Alekhine Defense | 5 | 2/1/2 | 40.0% |
| C78 | Ruy Lopez: Morphy Defense | 5 | 3/1/1 | 60.0% |
| B12 | Caro-Kann: Advance Variation | 5 | 1/2/2 | 20.0% |
| A30 | English Opening | 4 | 0/2/2 | 0.0% |
| D02 | King's Indian Defense: Fianchetto Variation | 3 | 1/0/2 | 33.3% |
| C65 | Ruy Lopez: Berlin Defense | 3 | 1/1/1 | 33.3% |
| D79 | Indian Defense | 3 | 1/0/2 | 33.3% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A70 | Benoni Defense | 16 | 6/5/5 | 37.5% |
| B78 | Sicilian: Dragon | 9 | 4/4/1 | 44.4% |
| C92 | Ruy Lopez: Closed | 9 | 1/1/7 | 11.1% |
| B50 | Sicilian | 8 | 3/0/5 | 37.5% |
| A15 | English Opening | 8 | 0/3/5 | 0.0% |
| A80 | Dutch Defense | 8 | 3/1/4 | 37.5% |
| A43 | Indian Defense | 4 | 1/1/2 | 25.0% |
| C54 | Italian Game | 4 | 1/0/3 | 25.0% |
| C54 | Italian Game: Classical Variation | 3 | 1/0/2 | 33.3% |
| E32 | Nimzo-Indian: Classical Variation | 3 | 0/1/2 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Mar 2022 | Alexandre Qashashvili | 2,505 | Titled Tue Early | C50 |
| May 2002 | Mark C Diesen | 2,472 | ch-Texas | B48 |
| Jun 2006 | Bruci Lopez | 2,411 | 34th World Open | C78 |
| Jun 2005 | Zhe Quan | 2,397 | 33rd World Open | A78 |
| Mar 2022 | Adrian Suarez Uriel | 2,359 | Titled Tue Early | A15 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2022 | 120 | 25 | 1,960 |
| ch-Texas | 2003 | 17 | 9 | 2,196 |
| Thompson Memorial Open | 2001 | 9 | 5.5 | 2,263 |
| 7th ch-Southwest Class | 2016 | 7 | 2 | 1,953 |
| 84th Southwest Open | 2018 | 7 | 2 | 2,135 |
| 26th North American Open | 2007 | 7 | 3.5 | 2,132 |
| 65th Southwest Open | 1999 | 6 | 3.5 | 2,013 |
| 34th World Open | 2006 | 6 | 3 | 2,360 |
Interactive opening tree from all 226 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Mark Dejmek's chess games?
226 games by Mark Dejmek, from Apr 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 Mark Dejmek has played.
What does Mark Dejmek play on the first move as White?
Across 111 games with White in our database, Mark Dejmek opens with 1.e4 (56% of games), 1.Nf3 (44% of games). Against 1.e4 as Black, Mark Dejmek answers 1...e5 (55% of games), 1...c5 (45% of games). Against 1.d4: 1...Nf6 (89% of games), 1...f5 (11% of games).
What openings does Mark Dejmek play as White?
As White, Mark Dejmek's most-played openings in our database are: Réti Opening (33 games, 15.2% win rate); Sicilian: Najdorf (8 games, 37.5% win rate); Sicilian (6 games, 50.0% win rate). The full breakdown of 111 games with White is in the table above.
What openings does Mark Dejmek play as Black?
As Black, Mark Dejmek most often plays: Benoni Defense (16 games, 37.5% win rate); Sicilian: Dragon (9 games, 44.4% win rate); Ruy Lopez: Closed (9 games, 11.1% win rate). See the table above for the top ten Black openings across 115 games.
What is Mark Dejmek's FIDE rating?
Mark Dejmek is currently rated 1,944 in classical chess, 2,065 in rapid. Peak classical rating: 2,185 (Apr 2006).
How many games has Mark Dejmek played?
Our database contains 226 games by Mark Dejmek, covering Apr 2003 to Jul 2026. Overall record: 53 wins, 45 draws, 128 losses (23.5% win rate).
How do I prepare against Mark Dejmek?
226 games by Mark Dejmek 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.