A Bullet Journey From 1688 to 2574
Vasilios Kotronias, known on the board as Kotroniaszeboomer, has quietly become one of the most relentless bullet grinders around. His online arc is a study in persistence: an 1688 rating in August 2021, a long pause, and then an explosive return in 2026 where he stormed past 2500 and peaked at 2574.
Bullet is clearly his playground. Across 502 bullet games he has scored 262 wins, and his longest winning streak hit 9 games. When the clock is his enemy, Kotronias thrives, though he has also weathered a 7 game losing streak, proof that even bombers crash sometimes.
Style: Chaos Controlled
Kotronias opens almost exclusively with e4, and his stats suggest a player who enjoys converting material into endgames. His endgame frequency sits at 86.85%, yet games run long, averaging around 79 moves per win and 85 per loss. He is a comeback artist, recovering to win 84.53% of the time, and even after losing a piece he still wins nearly half of his games.
- White win rate: 55.15%
- Black win rate: 47.76%
- Delivers the first check in 56.34% of games
- Queen is his most common checking piece
Opening Repertoire
As White, Kotronias leans on the Scandinavian Defense (65.85% win rate), the Sicilian Defense (63.33%), and the French Defense. With the black pieces he is a devoted Caro-Kann Defense player, navigating its Exchange Variation with a 53.12% score, while his best black weapon is the Benoni Defense, where he wins 80% of the time.
His one known weakness? The Amar Gambit, an offbeat opening that has cost him a 23.53% win rate. Nobody is perfect.
Rivalries
No opponent has faced him more than RRKali. Across 23 meetings, Kotronias has dominated with 17 wins against 5 losses and a single draw. Other regular foes include razerhawk and beau37, both of whom have tasted defeat more often than victory against this e4 loving bomber.
Psychology and Habits
Kotronias plays best at 20:00, when his sampled win rate reaches 100%. His tilt factor is a moderate 7, and he mows down lower rated opponents with a 77.74% win rate, though he dips to 26.3% against stronger players. Most of his bullet games end by timeout, a reminder that in his world, the clock is just another piece on the board.