Avatar of Xavier Mastalerz

Xavier Mastalerz

Username: mastalerzxavier

Location: namur city

Playing Since: 2015-05-18 (Active)

Wow Factor: ♟♟♟♟♟

Chess.com

Daily: 1595
142W / 48L / 8D
Rapid: 1861
0W / 1L / 0D
Blitz: 2506
3928W / 4405L / 1219D
Bullet: 2167
1267W / 1433L / 221D

Xavier Mastalerz (mastalerzxavier)

Xavier Mastalerz is a chess aficionado with a flair for blitz and bullet games that could make even a coffee-fueled grandmaster raise an eyebrow. His journey through the ranks reveals a relentless pursuit of the 64-square battlefield, where his rating has danced impressively from modest beginnings to a blistering peak of 2584 in blitz, achieved in April 2021. Not one to shy away from the lightning-fast chaos of bullet chess, Xavier also boasts a top bullet rating north of 2300, proving he's just as deadly when the clock's ticking down.

An enthusiast of sharp and occasionally cheeky openings, Xavier often deploys the French Defense Exchange Variation and the Bd7 Steinitz Boleslavsky system among others, showing a preference for solid structures sprinkled with tactical opportunity. His favorite daily battles have seen him dominate the Queens Gambit Declined Marshall Defense with a pristine 100% win rate—because who doesn’t love a good daily victory to start the day right?

With a psychological resilience hinted at by a 79.47% comeback rate after setbacks, he’s not one to throw in the towel easily (though he does have a modest 7.25% early resignation rate, proving even the best have their off-moods). Despite a quirky tilt factor of 13, Xavier plays his best games at the crack of dawn around 5 AM—a perfect time for creatures of the night and strategic geniuses alike.

His recent games tell a story of tactical grit and stamina, with victories by resignation and time management being common themes. Whether outmaneuvering opponents in complex French Defense lines or sealing the deal in fast-paced blitz skirmishes, Xavier’s games reflect not only skill but also an irresistible chess charisma.

In summary: Xavier Mastalerz is your go-to player for lightning-fast play and deep strategic battles, masterfully blending resilience, tactical acumen, and a hint of bravado. Watch out on the board—he’s a storm brewing, with a queen in his pocket and a knight in his sleeve.


Coach's Avatar

What Xavier is doing well in these blitz games

You show a willingness to pursue active, tactical play when the position allows, and you keep the opponent under pressure with forcing moves. In the win against Minas_TV, you maintained piece activity and finished with a sharp, decisive finish that exploited the opponent's limited defensive resources. Across your recent games, you demonstrate good initiative and a sense for when to complicate the position to your advantage.

  • You coordinate your minor and major pieces to create concrete threats, especially when you have the initiative.
  • You capitalize on opponents' inaccuracies, turning dynamic chances into clear outcomes rather than trading into passive endgames.
  • Your willingness to keep the attack with timely checks and active rooks helps maintain momentum in the middlegame.

Key areas to improve

  • Time management in blitz: aim to preserve a usable clock into the later middlegame. If you’re low on time, switch to a safer, quicker plan to avoid rushing critical decisions.
  • Calculation discipline: in complex tactical moments, slow down and systematically ask: what are the opponent’s immediate threats, what is the material balance, and is there a forcing line I am missing? Consider creating a short checklist before committing to a line (check for checks, captures, and threats).
  • Endgame technique: when you transition to simplified positions, have a clear plan (e.g., activate the king, activate the rooks, create a passed pawn) to convert advantages efficiently.
  • Opening depth: you’ve faced Queen’s Gambit Declined/Catalan and Indian Game setups. Build a compact, reliable 1- or 2-munch opening plan for each and practice the standard middlegame transitions that follow your chosen lines.
  • Pattern recognition: reinforce common blitz motifs—back-rank awareness, overloads, and typical pawn breaks in your frequent structures—to improve quick decisions in the heat of the clock.

Practical plan for the next week

  • Daily tactical practice: solve 15–20 puzzles focusing on motifs you see in your blitz games (pins, skewers, double attacks, back-rank ideas).
  • Blitz practice with a structured review: play 3 short blitz sessions (3+2 or 5+0), then spend 5–10 minutes reviewing the key turning points of each game.
  • Endgame drills: work on rook endings and basic king + rook endgames to improve conversion of advantages in blitz.
  • Opening study sprint: pick two lines (one from Queen’s Gambit Declined/Catalan family and one from Indian Game family) and write a 5–7 move plan for white and for black, plus typical middlegame ideas.
  • Post-game reflecting note: after each game, write a one-minute summary of the critical moments and one improvement point to reinforce learning.


🆚 Opponent Insights

Recent Opponents
nobody 0W / 0L / 1D
desni93 0W / 1L / 0D
premierchess64 0W / 2L / 0D
horsens 0W / 0L / 1D
nimzo31 2W / 4L / 0D
vardanyanarman123 0W / 1L / 0D
inuyasha0105 0W / 1L / 0D
mangekyovision 0W / 1L / 0D
thorice 1W / 2L / 2D
fibonacci26 1W / 0L / 0D
Most Played Opponents
Nostradamus123 34W / 69L / 3D
darkknightlupo 34W / 21L / 4D
Fabrice Wantiez 30W / 20L / 6D
mauricelion 20W / 15L / 0D
chesstintin15 20W / 13L / 0D

Rating

Year Bullet Blitz Rapid Daily
2025 2184 2431
2024 2233 2482 1595
2023 2156 2243
2022 2247 2286 1861
2021 2201 2315
2020 2204 2318 1469
2019 2021 2242
2018 2081 2127
2017 1577 2134
2015 1823
Rating by Year201520172018201920202021202220232024202524821469YearRatingBulletBlitzDaily

Stats by Year

Year White Black Moves
2025 275W / 266L / 89D 229W / 332L / 74D 78.1
2024 341W / 358L / 103D 311W / 396L / 92D 79.9
2023 229W / 283L / 70D 236W / 273L / 71D 81.2
2022 328W / 313L / 76D 265W / 391L / 71D 78.6
2021 304W / 341L / 92D 313W / 338L / 69D 76.2
2020 764W / 604L / 134D 622W / 716L / 133D 61.6
2019 466W / 428L / 142D 393W / 536L / 110D 78.9
2018 249W / 229L / 47D 209W / 268L / 39D 75.8
2017 101W / 81L / 16D 89W / 87L / 17D 80.5
2015 7W / 3L / 0D 11W / 0L / 0D 52.7

Openings: Most Played

Blitz Opening Games Wins Losses Draws Win Rate
Unknown 842 447 390 5 53.1%
French Defense: Burn Variation 652 248 324 80 38.0%
Budapest: 3.d5 537 194 242 101 36.1%
French Defense 502 195 244 63 38.8%
Döry Defense 455 186 209 60 40.9%
French Defense: Exchange Variation 307 134 133 40 43.6%
French Defense: Advance Variation 293 118 154 21 40.3%
Amazon Attack: Siberian Attack 251 97 126 28 38.6%
Colle System: Rhamphorhynchus Variation 249 105 113 31 42.2%
Slav Defense: Bonet Gambit 235 101 104 30 43.0%
Bullet Opening Games Wins Losses Draws Win Rate
Colle System: Rhamphorhynchus Variation 190 89 84 17 46.8%
Amar Gambit 180 78 87 15 43.3%
Australian Defense 165 70 90 5 42.4%
French Defense 133 61 66 6 45.9%
Döry Defense 104 41 53 10 39.4%
French Defense: Exchange Variation 85 35 46 4 41.2%
Barnes Defense 82 42 35 5 51.2%
Amazon Attack: Siberian Attack 80 33 41 6 41.2%
Alekhine Defense 79 37 37 5 46.8%
Czech Defense 73 35 33 5 48.0%
Daily Opening Games Wins Losses Draws Win Rate
French Defense 23 18 5 0 78.3%
Amar Gambit 12 12 0 0 100.0%
Amazon Attack: Siberian Attack 8 6 1 1 75.0%
Döry Defense 7 5 2 0 71.4%
French Defense: Exchange Variation 6 1 5 0 16.7%
French Defense: Advance Variation 6 4 2 0 66.7%
Colle System: Rhamphorhynchus Variation 6 6 0 0 100.0%
QGD: 2...Bf5 3.cxd5 6 6 0 0 100.0%
Barnes Defense 5 3 1 1 60.0%
French Defense: MacCutcheon Variation 5 3 1 1 60.0%
Rapid Opening Games Wins Losses Draws Win Rate
Catalan Opening: Closed 1 0 1 0 0.0%

🔥 Streaks

Streak Longest Current
Winning 27 0
Losing 13 0