Prepare against Xavier Mastalerz
Belgium · World #11,575 classical · FIDE ID 208310
Our database contains 182 games by Xavier Mastalerz, covering Jan 2006 to Jul 2026. Below you'll find Xavier Mastalerz's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Xavier Mastalerz 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 | 2,146 | 2,257 | Dec 2017 |
| Rapid | 2,162 | 2,178 | Sep 2019 |
| Blitz | 2,164 | 2,164 | Jul 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 182 | 61 | 71 | 50 | 33.5% |
| As White | 88 | 34 | 34 | 20 | 38.6% |
| As Black | 94 | 27 | 37 | 30 | 28.7% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Xavier Mastalerz's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Xavier Mastalerz's side.
First moves as White (88 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf3 | 42 | 47.7% | 57.1% |
| d4 | 27 | 30.7% | 57.4% |
| c4 | 10 | 11.4% | 50.0% |
| e4 | 9 | 10.2% | 72.2% |
Main lines as White
- 1.Nf3 — 48% of White games, 57.1% score
- …Nf6 (36% of these games) — Mastalerz usually continues d4 (45.5% score)
- …d5 (31% of these games) — Mastalerz usually continues d4 (70.8% score)
- …c5 (17% of these games) — Mastalerz usually continues g3 (50.0% score)
- 1.d4 — 31% of White games, 57.4% score
- …Nf6 (56% of these games) — Mastalerz usually continues Nf3 (62.5% score)
- …d5 (37% of these games) — Mastalerz usually continues Nf3 (50.0% score)
- …f5 (4% of these games) — Mastalerz usually continues Nf3 (100.0% score)
As Black against 1.e4 (49 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e6 | 47 | 95.9% | 56.4% |
| c5 | 1 | 2.0% | 100.0% |
| e5 | 1 | 2.0% | 50.0% |
As Black against 1.d4 (31 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e6 | 26 | 83.9% | 44.2% |
| Nf6 | 4 | 12.9% | 50.0% |
| d5 | 1 | 3.2% | 50.0% |
Xavier Mastalerz's chess games
All 182 games by Xavier Mastalerz in the Chess.ceo database (Jan 2006 - 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: 61 wins, 71 draws, 50 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A31 | English Opening | 8 | 3/4/1 | 37.5% |
| D05 | Indian Defense | 8 | 2/4/2 | 25.0% |
| D11 | Slav Defense | 8 | 3/3/2 | 37.5% |
| D05 | Colle System | 8 | 4/3/1 | 50.0% |
| A37 | Réti Opening | 7 | 3/2/2 | 42.9% |
| E05 | Catalan | 6 | 3/3/0 | 50.0% |
| E94 | King's Indian Defense: Orthodox Variation | 6 | 2/3/1 | 33.3% |
| E17 | Queen's Indian Defense | 4 | 0/0/4 | 0.0% |
| A04 | Dutch Defense | 4 | 2/2/0 | 50.0% |
| A93 | Queen's Pawn Game | 4 | 1/2/1 | 25.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| E12 | Queen's Indian Defense | 12 | 1/7/4 | 8.3% |
| C11 | French: Classical Variation | 12 | 3/6/3 | 25.0% |
| C06 | French: Tarrasch Variation | 9 | 3/3/3 | 33.3% |
| C00 | French Defense | 9 | 5/2/2 | 55.6% |
| C02 | French: Advance Variation | 8 | 3/4/1 | 37.5% |
| A46 | Indian Defense | 5 | 2/1/2 | 40.0% |
| C18 | French: Winawer Variation | 5 | 1/1/3 | 20.0% |
| C01 | French: Exchange Variation | 5 | 1/3/1 | 20.0% |
| A25 | English Opening: Reverse Sicilian | 5 | 0/2/3 | 0.0% |
| C00 | King's Indian Attack | 4 | 2/1/1 | 50.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Oct 2021 | Felix Levin | 2,472 | chT-BEL 2122 | E04 |
| Feb 2016 | Manuel Bijaoui | 2,419 | 32nd Cappelle Open | C06 |
| May 2013 | Kamran Shirazi | 2,411 | 37th Fourmies Open | E60 |
| Dec 2016 | Geert Van der Stricht | 2,379 | chT-BEL 1617 | E04 |
| Mar 2018 | Felix Klein | 2,331 | chT-BEL 1718 | C11 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Charleroi Open | 2017 | 23 | 14.5 | 2,172 |
| ch-BEL U20 | 2011 | 18 | 9 | 2,128 |
| 50th Wch U20 | 2011 | 13 | 5 | 2,074 |
| 10th Gibraltar Masters | 2012 | 10 | 4.5 | 2,194 |
| ch-BEL U14 | 2004 | 9 | 5.5 | 1,597 |
| ch-BEL U20/U18 | 2008 | 9 | 5.5 | 2,074 |
| chT-BEL 2122 | 2022 | 8 | 4 | 2,339 |
| ch-Hainaut | 2008 | 8 | 5 | 1,868 |
Interactive opening tree from all 182 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Xavier Mastalerz's chess games?
182 games by Xavier Mastalerz, from Jan 2006 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 Xavier Mastalerz has played.
What does Xavier Mastalerz play on the first move as White?
Across 88 games with White in our database, Xavier Mastalerz opens with 1.Nf3 (48% of games), 1.d4 (31% of games), 1.c4 (11% of games). Against 1.e4 as Black, Xavier Mastalerz answers 1...e6 (96% of games), 1...c5 (2% of games), 1...e5 (2% of games). Against 1.d4: 1...e6 (84% of games), 1...Nf6 (13% of games), 1...d5 (3% of games).
What openings does Xavier Mastalerz play as White?
As White, Xavier Mastalerz's most-played openings in our database are: English Opening (8 games, 37.5% win rate); Indian Defense (8 games, 25.0% win rate); Slav Defense (8 games, 37.5% win rate). The full breakdown of 88 games with White is in the table above.
What openings does Xavier Mastalerz play as Black?
As Black, Xavier Mastalerz most often plays: Queen's Indian Defense (12 games, 8.3% win rate); French: Classical Variation (12 games, 25.0% win rate); French: Tarrasch Variation (9 games, 33.3% win rate). See the table above for the top ten Black openings across 94 games.
What is Xavier Mastalerz's FIDE rating?
Xavier Mastalerz is currently rated 2,146 in classical chess, 2,162 in rapid and 2,164 in blitz. Peak classical rating: 2,257 (Dec 2017).
How many games has Xavier Mastalerz played?
Our database contains 182 games by Xavier Mastalerz, covering Jan 2006 to Jul 2026. Overall record: 61 wins, 71 draws, 50 losses (33.5% win rate).
How do I prepare against Xavier Mastalerz?
182 games by Xavier Mastalerz 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.