Vihaan Jammalamadaka (calmberserk) Profile
Vihaan Jammalamadaka, known online as calmberserk, is a FIDE Candidate Master whose handle says it all. The calm in his username masks a berserk attacking style that has carried him past 3000 in bullet. He is primarily a bullet specialist, with thousands of games played at warp speed.
Early Days and Rise
Vihaan first appeared on the leaderboards in late 2022 with a bullet rating near 2058 and a rapid rating of 1599. By the summer of 2024, something clicked. His bullet rating exploded from the 2100s to the 2700s within a single month, and he has rarely looked back since. His steady climb reached new heights in 2025 and 2026, when he began flirting with the 2900 and 3000 marks on a regular basis.
Bullet King
Bullet is where Vihaan makes his stand. His peak bullet rating reached 3020 (2026-08-31) in August 2026, and he has topped 2900 on multiple occasions. His blitz play is almost as fierce, peaking at 2825 (2026-08-31). He has played over 7,300 bullet games, winning roughly 3,800 of them, and once strung together a 30 game winning streak. His preferred time control is clearly bullet, where his instincts and lightning reflexes shine.
Opening Repertoire
Vihaan is a creature of habit. With the white pieces he leans heavily on the Nimzo-Larsen Attack, opening with b3 in more than 1,200 recorded games. When he wants to sharpen things up, he reaches for the Amar Gambit or the Colle Rhamphorhynchus Variation. As Black, his go to is the Scandinavian Defense, which he has played over 1,000 times in bullet with a strong win rate. His opening choices are offbeat, but his results are anything but random.
Rivalries
No player reaches these heights without familiar foes. His most frequent rival is Shelev Oberoi, with 234 meetings that have gone back and forth almost evenly. He also holds a strong edge over LadyCockroach, winning 57 of 92 games, and has feasted on ultraf4st1 with 40 wins in 43 tries. The battles against Alex Villa Tornero and Aman Hambleton have been far more competitive.
Fighting Spirit
The statistics paint a picture of a relentless competitor. His comeback rate sits near 85 percent, and he still wins nearly half his games after losing a piece. He wins more than 59 percent of games when he delivers the first check, and his average game lasts around 80 moves, showing that he rarely takes shortcuts. Wednesday is his best day with a 61 percent win rate, and early morning games seem to suit him best, with his strongest hours coming around 07:00.
Summary
Vihaan Jammalamadaka is a Candidate Master built for speed. His calm opening choices often explode into berserk tactical battles, and his results speak for themselves. Whether he is grinding out another win over a familiar rival or launching a fresh Nimzo-Larsen Attack, one thing is certain: calmberserk never does anything quietly.