João Gabriel Muniz Szuba (Joa0Szuba): A Chess Biography
Some players memorize theory. Some players grind endgame studies by candlelight. João Gabriel Muniz Szuba looked at bullet chess, shrugged, and decided that the correct way to spend the final three seconds of a game was winning on them. Known online as Joa0Szuba (the zero is load bearing), he is a volume-based chess player: the strategy is volume, and the tactics are more volume.
The Long Climb
João Gabriel's recorded career begins in 2016 with humble blitz games, and bullet chess arrives in early 2017. By December 2017 he had pushed his bullet rating past 1550. Then came December 2018, a month in which he played 121 bullet games, lost 85 of them, and fell more than 300 points. Most players would take a break. João took January 2019 instead, went 74-27, and erased the crash like a man refusing to acknowledge that December ever existed.
The true ascent came in 2020, when the world locked down and João unlocked. Two hundred bullet games in July alone pushed him past 2000, and by September he had reached the 2300 neighborhood. The grind never stopped: January 2022 featured 501 bullet games, roughly sixteen per day, which is either admirable discipline or a cry for help that also gained rating. By October 2024 the peak stood at 2436, built almost entirely from games where the clock was the real opponent, with a 2026 cameo on the blitz boards peaking at 2382.
An Opening Repertoire Handled With Protective Gloves
The signature is the Amar Gambit: nearly 400 bullet games of 1.Nh3, the move engines describe as "interesting" the way one describes a house fire. The backronym sometimes attached to the opening, Absolutely Mad And Ridiculous, doubles as a mission statement, and João scores a near-perfectly mediocre 49% with it, proving the gambit is exactly as good as everything else he plays. The Barnes Defense has been trotted out 177 times in bullet with a winning record, the Blackburne Shilling Gambit has ambushed 180 blitz opponents, and the Cobra Variation of the Sicilian has been sprung nearly 200 times.
The Amar Gambit, in its natural habitat.
Every repertoire needs a secret weapon, and his is the Colle System's Rhamphorhynchus Variation, named after a pterosaur, scoring over 56% in bullet. For balance, when the clock slows down, so does he: his rapid record is a suspiciously excellent 145-34, and his rapid Najdorf games went a flawless five for five. The man who opens with 1.Nh3 also plays 5...a6 like a professional. Chess is a broad church.
Rivalries: Some Are Marathons, Some Are Freefall
With 249 games against giovani_cwb at a 133-92-24 scoreline, João has found a genuine sparring partner, the kind of rivalry that keeps both players online at ungodly hours. jeanhenrique has taken 54 meetings and escaped with only 13 wins. Then there is Pablo Alejandro Acosta: 52 games, 4 wins, 47 losses. That is not a rivalry, that is a recurring donation. Alvaro Alves De Almeida Junior and Nathan Felipe Filgueiras also hold winning records against him, proving even loyal Amar players have creditors.
Playing Style: The Unkillable Endgame Gremlin
João's games run long: 75 moves on average in wins, with an endgame appearing in over 70% of his games. He is constitutionally incapable of early resignation (3.67%), a trait that pairs beautifully with an 80.91% comeback rate. Lose a piece against him and his win rate still sits near 49%, meaning sacrifices against this man are statistically a charitable gift. His favorite checking piece is the queen, deployed over 8,000 times, because subtlety is for slower time controls.
Circadian Rhythms and Other Excuses
The data is clear: João is a morning weapon. Games at 8 AM win 65.38% of the time, while 6 PM games crater to 45.73%. Wednesdays are his kryptonite; Mondays and Saturdays are his playground. A tilt factor of 54 suggests a man who knows precisely when he is tilting and presses the queue button anyway, the most relatable statistic in this entire biography.
By the Numbers
- Nearly 10,000 analyzed games: about 4,700 in bullet, roughly 5,000 in blitz, and that stingy 145-34 rapid record.
- A 31-game winning streak, the crown jewel of the grind.
- A 54-game losing streak, the part of the grind nobody photographs.
- 80.91% comeback rate combined with a 3.67% resignation rate: the mixture of a horror movie villain and a good sport.
- 8,085 queen checks delivered, first to check in 53.42% of games, and a 60% win rate when striking first.
- Prime operating hours: 8 AM. Do not operate against him then.
Whether he is dragging you into a 75-move endgame or hitting you with 1.Nh3 before your coffee has finished brewing, João Gabriel Muniz Szuba represents online chess at its purest: too many games, questionable openings, and an absolute refusal to ever, ever resign.