Borys Tofil: The Candidate Master Behind juzekarbuzek
Borys Tofil, known to the online chess world as juzekarbuzek, is a FIDE Candidate Master and a lifelong devotee of blitz chess. His username sounds like a beloved watermelon mascot; his play is considerably less sweet. Armed with 1.e4, an endless tank of patience, and a peak blitz rating of 2645 (2026-10-08), he has turned grinding into an art form and the endgame into a lifestyle.
The Journey: Debut, Disappearance, Domination
Borys's online story opens in August 2015 with an eight-game blitz audition starting at 1355. He won six of those games, strolled off at 1604, and then vanished for almost four years like a plot twist nobody requested. He resurfaced in March 2019, stormed past 2000 within weeks, and in April 2021 produced a one-month rocket ride from 2060 to 2277 on the strength of 35 wins in 58 games.
After that the throttle stayed down: a surge to 2431 in October 2023, a 348-game December in 2024, and a truly unhinged 435-game July in 2026. By May 2026 he had touched a personal best that made his Candidate Master title look less like an honor and more like a warning label.
The Repertoire: All Hail the Sicilian
Borys opens 1.e4 the way other people open the fridge: constantly and without hesitation. The Sicilian Defense is his signature arena, with more than 500 blitz appearances and a clear taste for Closed Sicilian structures. The Alapin Variation remains his on-again, off-again toxic relationship, best summarized as "we are working on it." The Caro-Kann Defense, Scandinavian Defense and Modern Defense all make regular guest appearances, while the Czech Defense quietly leads the repertoire in win rate at just over 51%.
In 2025 he also ran a 94-game experiment starting with 1.b3 and flirted with the Nimzo-Larsen Attack in bullet, proving that a man playing hundreds of blitz games a month needs a hobby within the hobby.
Below, the Open Sicilian tabiya he never seems to tire of:
Style: The Undying Endgame Machine
Nearly 85% of Borys's games reach an endgame, and his wins average about 86 moves, which means beating him is less a duel and more a residency. His comeback rate sits at a monstrous 86%, his one-sided losses happen barely 1% of the time, and when a position is truly lost he resigns promptly, because he is a gentleman and will not make you perform checkmate for an audience.
His all-time favorite checking piece is the rook, with over 6,000 rook checks on record. His longest winning streak is 9 games. His longest losing streak is 13. We agreed as a publication not to discuss the losing streak.
Rivalries: Familiar Faces and One True Nemesis
Some players collect trophies. Borys collects recurring opponents. Evan Rabin is his longest-running sparring partner, 21 games deep into a knife-fight of a series sitting at 8 wins, 10 losses and 3 draws. dragon84 and onlyc6 have both deadlocked him, while chessplayer3015 is one of the few names against whom Borys actually owns the edge at 7-5.
And then there is JazzyAtom. Eleven games. Two wins. Nine losses. Not a single draw. Statisticians call it a matchup problem. Borys calls it unfinished business.
Quirks, Superstitions and Fun Facts
- His win rate peaks in the 12:00 hour at above 50%. Games at 7 AM drop to 36%, so challenge the watermelon only after coffee.
- His tilt factor is a glacial 13. It is extremely difficult to rattle this man.
- Rated chess costs him roughly 22 win-percentage points compared to casual games, which suggests that when nothing is on the line he is secretly a superhero.
- Against lower-rated opponents he wins about three games in four. Against higher-rated ones he fights bravely and pays taxes like the rest of us.
- His lifetime daily chess record is 4-1 in five games: technically elite, spiritually a blitzer.
- Bullet is his second love, with more than 1,100 wins and a peak rating north of 2500.
- Over 2,000 career blitz wins and counting. The wins column is basically a pension plan.