Prepare against Marius Deuer
GM · DEU · World #711 classical · FIDE ID 16236432
Our database contains 1,019 games by Marius Deuer, covering Apr 2017 to Aug 2026. Below you'll find Marius Deuer's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Marius Deuer 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 | 2,484 | 2,507 | Dec 2024 |
| Rapid | 2,436 | 2,436 | Aug 2026 |
| Blitz | 2,516 | 2,517 | Mar 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 1,019 | 396 | 256 | 367 | 38.9% |
| As White | 510 | 220 | 131 | 159 | 43.1% |
| As Black | 509 | 176 | 125 | 208 | 34.6% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Marius Deuer's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Marius Deuer's side.
First moves as White (505 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 324 | 64.2% | 56.2% |
| e4 | 80 | 15.8% | 58.1% |
| b3 | 39 | 7.7% | 52.6% |
| Nf3 | 29 | 5.7% | 62.1% |
| c4 | 23 | 4.6% | 47.8% |
| g3 | 5 | 1.0% | 40.0% |
Main lines as White
- 1.d4 — 64% of White games, 56.2% score
- …Nf6 (61% of these games) — Deuer usually continues c4 (57.6% score)
- …d5 (29% of these games) — Deuer usually continues c4 (59.8% score)
- …e6 (4% of these games) — Deuer usually continues c4 (41.7% score)
- 1.e4 — 16% of White games, 58.1% score
- …c5 (38% of these games) — Deuer usually continues Nf3 (60.3% score)
- …e5 (26% of these games) — Deuer usually continues Nf3 (60.5% score)
- …c6 (16% of these games) — Deuer usually continues d4 (50.0% score)
As Black against 1.e4 (241 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c6 | 118 | 49.0% | 54.7% |
| e5 | 66 | 27.4% | 50.0% |
| c5 | 39 | 16.2% | 57.7% |
| g6 | 10 | 4.1% | 55.0% |
| e6 | 5 | 2.1% | 40.0% |
| b6 | 1 | 0.4% | 0.0% |
As Black against 1.d4 (158 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 136 | 86.1% | 44.9% |
| d5 | 14 | 8.9% | 35.7% |
| g6 | 3 | 1.9% | 33.3% |
| e6 | 2 | 1.3% | 0.0% |
| c6 | 1 | 0.6% | 0.0% |
| b6 | 1 | 0.6% | 0.0% |
Marius Deuer's chess games
All 1,019 games by Marius Deuer in the Chess.ceo database (Apr 2017 - 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: 396 wins, 256 draws, 367 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| E46 | Nimzo-Indian: Rubinstein System | 73 | 27/31/15 | 37.0% |
| D35 | Indian Defense | 50 | 21/15/14 | 42.0% |
| A01 | Nimzovich-Larsen attack | 39 | 20/1/18 | 51.3% |
| E60 | King's Indian Defense | 39 | 16/16/7 | 41.0% |
| D11 | Slav Defense | 33 | 14/12/7 | 42.4% |
| A58 | Benoni Defense | 22 | 7/3/12 | 31.8% |
| D31 | Queen's Gambit Declined | 19 | 8/9/2 | 42.1% |
| B22 | Sicilian | 15 | 5/2/8 | 33.3% |
| A62 | Catalan | 10 | 5/3/2 | 50.0% |
| D22 | Queen's Gambit Accepted | 10 | 3/4/3 | 30.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B12 | Caro-Kann: Advance Variation | 46 | 13/23/10 | 28.3% |
| A33 | English Opening | 33 | 8/10/15 | 24.2% |
| E00 | Catalan | 28 | 9/6/13 | 32.1% |
| D35 | Indian Defense | 26 | 12/7/7 | 46.2% |
| B13 | Caro-Kann: Exchange Variation | 25 | 11/5/9 | 44.0% |
| E15 | Queen's Indian Defense | 25 | 5/8/12 | 20.0% |
| A05 | Réti Opening | 20 | 6/5/9 | 30.0% |
| C95 | Ruy Lopez: Closed | 17 | 5/4/8 | 29.4% |
| B15 | Caro-Kann: Main Line | 15 | 6/6/3 | 40.0% |
| D02 | London System | 15 | 5/3/7 | 33.3% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| May 2025 | Nikita Vitiugov | 2,671 | TCh-AUT Blitz | A05 |
| Oct 2024 | Karthik Venkataraman | 2,581 | 27th OIBM | B12 |
| Oct 2024 | Ch Bauer | 2,557 | Weissenhaus Young Masters | B12 |
| Dec 2025 | Sankalp Gupta | 2,557 | 6th elllobregat Open | E48 |
| May 2025 | V Erdos | 2,542 | Grand Prix PlusCity Blitz | D06 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2025 | 269 | 103 | 2,140 |
| ch-GER Blitz | 2025 | 29 | 19 | 2,501 |
| Mitropa Cup | 2025 | 25 | 15 | 2,525 |
| ch-GER U10 | 2018 | 22 | 15 | 1,618 |
| ch-GER U14 | 2022 | 18 | 13.5 | 2,152 |
| chT-EU U12 | 2019 | 15 | 7 | 1,862 |
| chT-GER Lands U20 | 2020 | 14 | 9.5 | 2,057 |
| ch-GER Net blitz qual5 | 2020 | 13 | 5.5 | 2,115 |
Interactive opening tree from all 1,019 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Marius Deuer's chess games?
1,019 games by Marius Deuer, from Apr 2017 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 Marius Deuer has played.
What does Marius Deuer play on the first move as White?
Across 505 games with White in our database, Marius Deuer opens with 1.d4 (64% of games), 1.e4 (16% of games), 1.b3 (8% of games). Against 1.e4 as Black, Marius Deuer answers 1...c6 (49% of games), 1...e5 (27% of games), 1...c5 (16% of games). Against 1.d4: 1...Nf6 (86% of games), 1...d5 (9% of games), 1...g6 (2% of games).
What openings does Marius Deuer play as White?
As White, Marius Deuer's most-played openings in our database are: Nimzo-Indian: Rubinstein System (73 games, 37.0% win rate); Indian Defense (50 games, 42.0% win rate); Nimzovich-Larsen attack (39 games, 51.3% win rate). The full breakdown of 510 games with White is in the table above.
What openings does Marius Deuer play as Black?
As Black, Marius Deuer most often plays: Caro-Kann: Advance Variation (46 games, 28.3% win rate); English Opening (33 games, 24.2% win rate); Catalan (28 games, 32.1% win rate). See the table above for the top ten Black openings across 509 games.
What is Marius Deuer's FIDE rating?
Marius Deuer is currently rated 2,484 in classical chess, 2,436 in rapid and 2,516 in blitz. Peak classical rating: 2,507 (Dec 2024).
How many games has Marius Deuer played?
Our database contains 1,019 games by Marius Deuer, covering Apr 2017 to Aug 2026. Overall record: 396 wins, 256 draws, 367 losses (38.9% win rate).
How do I prepare against Marius Deuer?
1,019 games by Marius Deuer 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.