Sepehr Golsefidy
Sepehr Golsefidy, known online as Seppppppy, is a National Master who treats the blitz clock like a personal alarm clock. With an enormous catalog of games and a rating curve that looks like a rocket launch, he has become one of the most recognizable grinders on the platform. Blitz is his home, and he has the battle scars to prove it.
Early Days and the Grind
Sepehr began his online journey in late 2017 as a 1300-ish blitz player. He played through the ups and downs, once losing 33 games in a row, then responding with a 28 game winning streak. By 2020 he cracked 2000, and in 2026 he reached a 2816 (2026-08-18) blitz peak of 2816. His bullet rating went even higher, touching 2903 (2026-04-28) at 2903, which is a fancy way of saying he moves very fast when the clock is screaming.
Signature Openings
As white, Sepehr is a devoted e4 player. He has faced the Caro-Kann Defense more than 860 times in blitz, and he regularly chops his way through the French Defense Advance Variation. As black, he is not afraid of sharp lines. The Elephant Gambit and Blackburne Shilling Gambit appear in his repertoire with impressive win rates. He even enjoys the Amar Gambit, a true connoisseur's choice. His opening stats show a player who would rather play an interesting game than a quiet one.
Rivalries and Family Feuds
No biography is complete without rivals. Sepehr's most frequent dance partner is chessplayer109485, with a staggering 1,793 games between them. The head to head is lopsided in the opponent's favor, 945 losses for Sepehr, but he keeps coming back. Against Roger Shi he has the better end of the deal, winning 529 of 954 encounters. And then there is gol-dad, presumably family, who leads their 281 game series 153 to 110. Some rivalries are just destined to stay in the family.
Style and Stamina
Sepehr's style is relentless. He reaches the endgame in 67% of his games and wins 48% of his white games. His comeback rate is a remarkable 85.67%, meaning he has rescued a huge number of lost positions. He is at his best at 9am, which may or may not be a warning to morning opponents. With over 36,000 analyzed games and more than 22,000 rated blitz games, his stamina is almost as impressive as his appetite for the Sicilian Defense. A quick look at his rating journey
shows just how far he has climbed.