Who Is Coroico?
Coroico is a bullet-powered chess machine who has turned the one-minute time control into a full-time sport. With thousands of rated bullet games on the books and a peak bullet rating of 2675 (2026-05-11), this player treats the clock less like a constraint and more like a dance partner. The rating chart shows the climb from a modest 1514 in 2018 to a 2600-plus bullet ceiling in 2026:
.A Style Built on Chaos and Comebacks
As White, Coroico favors the Nimzo-Larsen Attack and the Colle System, using quiet moves to set traps in the madness of bullet. As Black, the menu is far spicier: the Amar Gambit and Australian Defense show up constantly, because why play a normal opening when you can play a weird one? The stats say Coroico wins 68 percent of games against lower-rated opponents and only 28 percent against higher-rated ones. A polite way to say it: excellent bully, very brave underdog.
Coroico also owns a 91 percent comeback rate, meaning that losing a piece is not a tragedy, it is an invitation. The
chart shows where the magic happens, and where it absolutely does not.Rivalries
Every hero needs a foil. For Coroico, that foil is Nguyen Hoang Nam, who has won 47 of their 66 meetings. The rivalry is one-sided enough that the name starts to feel like a confession. On the flip side, a-r-27 is a much friendlier matchup, with Coroico ahead 33 wins to 23.
Bullet Night Owls Only
- Best playing hour: 23:00, when the rest of the world is asleep and the bullet pool is ripe for the picking.
- Longest winning streak: 10. Longest losing streak: 20. Coroico does everything in double digits.
- Favorite way to win: timeout, with 2,137 opponent timeouts banked. The clock is the 33rd piece.
- Least favorite way to lose: checkmate, which has happened 2,215 times.