Early Days and Rise to FM
Jacob Chudnovsky, known to the online chess world as chuddog, earned the FIDE Master title the hard way: by playing an absurd number of games and turning the internet into a training ground. He first appeared on the blitz ladder in 2016 and quickly climbed from the low 2100s to a peak of 2709 (2026-06-12) by June 2026. Along the way he has logged tens of thousands of rated battles, with a style that is part prizefighter, part marathon runner.
Signature Openings
As White, Chudnovsky is a loyal 1.e4 player. His most trusted weapon is the Sicilian Defense Sozin Attack, with nearly a thousand games and a healthy 50% win rate. He also leans on the Ruy Lopez Closed and the sharp French Defense MacCutcheon Variation, Wolf Gambit, embracing complications in the opening rather than dodging them.
With the black pieces he is equally adventurous, regularly meeting the Ruy Lopez with the tricky Blackburne Shilling Gambit and enjoying the Scotch Game. His opening repertoire suggests a player who values activity over safety, which makes his games consistently entertaining.
Fierce Rivalries
Chudnovsky's most frequent dance partner is Alan Stein, who has faced him a remarkable 77 times. The series has a clear theme: aliencowboy holds a commanding 54 wins, while Chudnovsky has managed 20 wins and 3 draws. It is the kind of grudge match that only online chess can produce, and the two keep coming back for more.
Behind the leading rivalry, he has also battled the likes of denmark2015, jbgd, and danlowinger dozens of times, building a web of recurring rivalries that spans years.
Style and Mentality
Chudnovsky is a fighter who refuses to fade. His comeback rate sits at an extraordinary 89.14%, meaning he wins a large share of games after losing a piece or falling behind. He also lands the first check in about 58% of games, showing a willingness to seize the initiative and force opponents to react.
His preferred time control appears to be bullet, where his strength-adjusted win rate is strongest at 55.4%. He tends to save his best results for the late morning, with his highest win rate coming around 11:00. The streak record tells the full story: both his longest winning streak and his longest losing streak are 14 games, a fitting summary of a player who lives on the edge of chaos.