Thomas Decker: FIDE Master and Bullet Specialist
Thomas Decker, who plays online as brouetoscope, is a FIDE Master with a very specific addiction: fast chess. While plenty of titled players treat bullet as a guilty pleasure, Decker has built a genuine reputation in it, and his rating graph in the fastest format looks less like a line and more like a fireworks display. He also plays serious Blitz, dabbles in Rapid, and once bravely entered a single Daily game, drew it, and appears to have retired from correspondence chess forever.
Across his recorded online career he has won over 800 Blitz games, added more than 60 Bullet wins, and kept a draw rate low enough to suggest he would rather fight than split the point. The FIDE Master title is the headline, but the bullet board is where the stories live.
The Bullet Board Is Home
Decker's preferred time control is Bullet, and the numbers back up the preference. His peak Bullet rating of 2522 (2026-10-23) arrived in October 2026, the payoff of a spectacular late run. In September 2026 alone he played 58 Bullet games, won 38, lost 14 and drew 6, launching his rating from the 2199 range into the 2500s in a matter of weeks. It was the kind of climb that makes opponents check whether they have been paired with a sandbagger or a sleepwalker who finally woke up.
He is also ruthless on the clock. In recorded termination data he has 43 wins by timeout against only 21 losses, which is a polite way of saying he is very good at making other people panic with two seconds left. Bullet is not a side quest for Decker, it is a bullet laboratory where his tactical instincts get tested at maximum speed.
A London System Loyalist With Wandering Eyes
With the white pieces, Decker has drifted steadily toward 1.d4. In 2024 he opened with 1.e4 115 times against 77 appearances of 1.d4, but by 2026 the ratio had flipped hard: 158 games with 1.d4 versus only 53 with 1.e4. The destination is usually the London System, and in Blitz his London setups have produced 64 games, 43 wins and a 67.19 percent score, making it comfortably his most productive opening. He is equally happy to steer the game into sharp, semi-forced lines when the mood takes him.
Against the Sicilian Defense he favors the Alapin and the Closed Sicilian, and as Black in the Closed Sicilian he scores a hefty 66.67 percent. The Caro-Kann Defense has been a tougher customer, appearing 59 times with only a 42.37 percent return, which suggests it is either a work in progress or a recurring bad habit. His more exotic choices include the Australian Defense, where he has scored 78.95 percent as White in Blitz, plus the Amar Gambit, the Döry Defense and the Barnes Defense, all of which suggest a player who reads opening books for the plot twists.
Early Captures, Long Games, No Surrender
Decker's playing style is a curious mix. His average first capture arrives on move 7, so the pieces come off early and the position gets clarified fast. Yet 81.48 percent of his games reach an endgame, and his average win takes about 82 moves. In other words, he trades pieces like a man clearing a cluttered desk, then grinds for hours in the resulting ending. A typical London structure he likes to reach looks like this:
What really stands out is his stubbornness. His early resignation rate is a remarkably low 0.74 percent, and his comeback rate sits at 87.31 percent. He has even won 51.72 percent of the games in which he lost a piece, which is either elite resourcefulness or evidence that his opponents relax too soon. One sided losses account for just 1.49 percent of his games, so if you beat Decker, you will have earned it.
Regular Rivals and One Persistent Nemesis
Like any prolific online player, Decker has accumulated a cast of familiar names. He holds an 8-3 record against aurl08, a 7-2 edge over wygon, and a flawless 6-0 against le_vrai_crow. He has also gone undefeated in short series against pwallis72, si_meng_44 and raiden728, all at 5-0. These are the opponents who probably see his name and sigh.
Then there is Dusko Zmijanac, the exception to the pattern, who leads their personal series 2-1 with one draw. Every rivalry needs a villain, and Decker appears to have found his in a player he has faced only four times.
Clock, Calendar and Rituals
Decker's results wobble with the calendar in a way that suggests chess is a mood as much as a skill. Sundays are his best day at 63.95 percent, while Tuesdays dip to 46.1 percent. His strongest hour with a meaningful sample is 17:00 at 61.74 percent, though the truly dedicated will note a perfect 100 percent record at 4 a.m. from a tiny handful of games. He has also strung together a 39 game winning streak, the sort of run that makes rating systems nervous.
His one Daily game, a drawn Italian Game Two Knights Defense, left him with a Daily peak of 607 and, presumably, a firm conclusion that correspondence chess is not for him. Rapid has been a quiet 2300 rating with a 9-3 record, enough to show he can play slowly if the mood strikes.
What to Expect
Play Thomas Decker and you should expect a London System, an early trade, a long grind and absolutely no free point if you blunder a piece. He will keep playing when he is worse, he will find a way back more often than is comfortable, and in bullet he will very likely flag you while you are still calculating. The FIDE Master title explains the technique. The bullet rating explains the temperament.