mentalmath.lol
Today's challenge

Everyone gets the same twenty problems.

One run a day, one score, one board. No account needed to compete — sign up when you want to keep it.

Build status

Puzzle date (UTC)
2026-08-26
Problems
20
Ramp version
1
Seed fingerprint
2e3187cccc88

The problems themselves are never rendered here. They are derived server-side and only released when a run starts, which is what keeps the board fair.

See the leaderboard