Meet Jakob Pfreundt: The International Master Behind IakovUlivar
Some players pick usernames like "QuietKnight42." Jakob Pfreundt picked IakovUlivar, which sounds less like a handle and more like the final boss of a fantasy novel. Fittingly, the man behind the name holds the FIDE title of International Master and has spent years quietly dismantling online blitz lobbies with the patience of a monk and the clock management of a tax collector.
The Seven-Year Blitz Climb
Jakob's blitz career is a story of steady, unglamorous violence. He surfaced in September 2018 around the 2000 mark and cracked 2500 within months. By May and June 2019 he was playing as if blitz chess owed him money, logging over 760 games in two months. The climb never really stopped: after a long grind through the 2600s, he surged in late 2024 and reached his peak of 2816 (2025-04-09) in April 2025.
Along the way he assembled an 11-game winning streak, a 10-game losing streak he presumably does not wish to discuss, and a towering record of 1,215 wins, 923 losses, and 376 draws. Curiously, his profile lists bullet as the preferred time control, but with only a couple dozen bullet games ever played, that is less a lifestyle and more a rumor. Blitz is where the IM actually lives.
Openings: Rooks, London Poison, and a Gambit You Cannot Spell
With White, Jakob spent years opening with 1.Nf3 before switching to 1.d4, and his sharpest weapon is the London System Poisoned Pawn, scoring over 57% with it. He also keeps the obscure Hungarian Opening Wiedenhagen-Beta Gambit in his bag, winning nearly 59% of those games, presumably while opponents scramble to search the name mid-game.
With Black, he trusts the Caro-Kann Defense across 114 games and is strangely excellent against the Catalan Opening, winning over 61% of them. His one documented weakness: the French Exchange, where his win rate collapses to 34%. Even International Masters have boundaries.
Style: The Endgame Vampire
An endgame appears in nearly 88% of Jakob's games, and his average win lasts a marathon 86 moves. This man does not beat you; he outlives you. His comeback rate sits at a ridiculous 89%, and he still wins almost half his games after dropping a piece, which is either resilience or stubbornness wearing a suit. His tilt factor measures a glacial 10, meaning bad beats simply bounce off him.
His signature? Rooks. He has delivered a staggering 2,914 rook checks, making the rook his favorite checking piece by a landslide, and he lands the first check 56% of the time. He also waits until roughly move seven on average to capture anything, like a person who insists on letting the soup cool.
The 4 AM Clause
Statistically, Jakob is deadliest at 4 in the morning, where his win rate hits a monstrous 80%, and weakest around 11 PM at barely 40%. The lesson for future victims is simple: if a challenge from IakovUlivar arrives before sunrise, maybe just go back to sleep.
Rivals and Nemeses
Every hero needs a villain, and Jakob's is Rogelio Jr Antonio, against whom he has fought 46 times for a grim 16 wins against 27 losses. Balance is provided by solbeo, a favored sparring partner at 17-6-2, and Paul Szuper, who has been on the wrong side of a 13-3-1 bloodbath. Jakob has also won 326 games purely on time, proving that in his world, the flag counts as a piece.
The Bottom Line
International Master Jakob Pfreundt is an endgame grinder with rook lasers, a poison London, and an unnatural comfort at 4 AM. He does not tilt, he does not rush, and he does not stop climbing. Checkmate rates a modest 8% of his victories, because why deliver mate when you can simply take everything first, one move at a time?