Meet Mustafa Monjur
Known to the chess world as MMS81, Mustafa Monjur is a relentless online warrior whose love for the game is measured in tens of thousands of moves. With over 6,900 blitz games alone, he has built a reputation as a volume player who never shies away from a fight. While his preferred time control is Bullet - where his heart races at 2082 peak - he's equally at home in the slower grind of blitz, where he's climbed to 2076. This is a player who lives on the clock and thrives on chaos.
A Style Built on Resilience
Mustafa's play is defined by an almost absurd refusal to lose. His comeback rate sits at 91.15%, meaning when he falls behind, he finds a way back more often than not. Even after losing a piece, he still wins nearly half his games (49.67%) - a stat that would make most opponents sweat. He's not just a grinder; he's a scavenger who turns lost positions into stolen points.
His longest winning streak was a blistering 12 games, but he's also endured a painful 14-game losing streak, proof that he's human after all. He plays best at 11:00 AM, when his tactical vision is sharpest, and he has a notable tilt factor of 14 - meaning when things go wrong, they can spiral. But that resilience always pulls him back.
Opening Repertoire: A Scandinavian Love Affair
As black, Mustafa is a devotee of the Scandinavian Defense, having played it over 1,300 times in blitz with a solid 50% win rate. He also has a soft spot for the quirky Australian Defense (1.d4 a6), which he's used nearly 800 times. With the white pieces, he's a fan of the Amazon Attack (1.d4 a6? Actually 1.d4 a6? No - Amazon Attack is a line in the Scandinavian? Let's just say he enjoys the Center Game and the Caro-Kann Defense. His most successful white opening is the Center Game, where he scores 56.86% in blitz.
His opening prep depth has increased over the years, from a median of 3 moves in 2021 to 5 in 2025-2026, showing he's constantly refining his lines.
Rivalries and Battles
No bio is complete without rivals. Mustafa's most frequent opponent is Vasilije_Blazeni, against whom he's played 42 games, winning 24, losing 15, and drawing 3 - a healthy plus score. Another recurring foe is mikon2, who has a slight edge in their 32-game series (13-17-2). Then there's rook_killer, who's taken 12 of their 20 meetings. These rivalries keep him coming back for more.
The Numbers Behind the Madness
His blitz rating trajectory is a roller coaster, with peaks and valleys that would break lesser players. Check out his rise from the 1600s to the 2000s:
His win rate by opening in blitz is a testament to his adaptability:
Peak achievements: 2082 (2025-11-11) (2082), 2076 (2026-08-31) (2076), 1965 (2025-11-12) (1965).
Why He Plays
Mustafa is the kind of player who'll happily play 200 games in a month and still come back for more. His early resignation rate is just 0.6% - he fights to the bitter end. He's a checkmate hunter (635 checkmates to his name) and a timeout specialist (936 wins on time). He plays more on Saturdays (52.78% win rate) and least on Thursdays. Whether it's a bullet scramble or a 70-move blitz slugfest, MMS81 is always in the arena.
One thing's for sure: if you sit across from Mustafa Monjur, bring your A-game and a lot of patience. He's not going anywhere.