Meet Chinguun Sumiya, the International Master of Speed
Chinguun Sumiya, known online as ChinguunSu, is an International Master who treats the digital chessboard like a playground and a battlefield at the same time. His preferred time control is bullet, and the numbers explain why. With a blitz peak of 2934 and a bullet peak of 2712, he belongs to the upper crust of online speed chess.
- International Master title: yes
- Preferred time control: bullet
- Longest winning streak: 20 games
A Bullet Brain Built for the Clock
Chinguun plays more blitz than bullet, but his heart beats fastest in bullet. He wins about 58% of his bullet games, and in August 2026 alone he played 81 bullet games, winning 58 of them and pushing his rating to a personal best of 2712 (2026-08-30). When the seconds are ticking, he is at his most dangerous.
Blitz Battles and Board Control
His blitz journey has been a slow burn into elite territory. Chinguun reached 2934 (2026-05-05) in May 2026, the culmination of years of steady climbing. The chart tells the story of a player who keeps improving:
. Across more than 1,250 blitz games he has scored 596 wins and only 111 draws, proof that he would rather fight than split the point.An Opening Repertoire Made for Sharp Play
Give Chinguun the white pieces and he will almost certainly push 1.e4. He scores over 61% against the Caro-Kann Defense and is a lifelong devotee of the sharp Sicilian Defense, especially the Najdorf Variation. With black, the King's Indian Defense is a trusted weapon, often reaching rich middlegame positions. A typical Najdorf start might look like this:
Here is how his results break down across his favourite battlegrounds:
Rivalries and Old Enemies
Every warrior needs rivals. Chinguun's most frequent dance partner is zulaka0107, who has faced him 40 times in blitz and come out second best in 32 of those meetings. A much sterner test is Frederik Svane, who leads their head to head 13 wins to 6. Regulars such as krsolomac, plsloseiambad, and sganerdene round out a leaderboard full of familiar faces.
The Comeback King of the Night Shift
Perhaps the most telling stat in Chinguun's profile is his comeback rate of 88.94%. He keeps fighting when others would resign, and he still wins 47.67% of his games even after losing a piece. His longest winning streak is 20 straight games. He is also a creature of the night, playing his best chess at 22:00 with a 77.78% win rate. For anyone who has faced him in a late night bullet session, that comes as no surprise.