Sudoku · solo · Kru · Battle
Race the clock.
Beat your best time, solve one live grid with a teammate, or meet a rival in a rated Battle.
- 4 difficulties
- 1 fresh grid a day
- 2-4 minds per Kru
Daily challengeFor fun
One fresh grid every day
One medium grid, the same for everyone. How fast can you clear it?
Play today's grid
No best time yet
Pick your challenge
How do you want to play?
Choose one mode. You can switch without losing your setup.
NewLearn with Kru
Never played, or hunting deeper techniques?
Kru teaches you himself, belt by belt: watch him play each technique move by move, drill it on real grids while he reacts to every move, then pass the belt exam and sink to the next depth.
Five belts deep: Rock Pool to Abyss
Enter the Academy
Free, start at your level