One puzzle.
Every day.

How it works

1. 1

   One hard puzzle drops daily

   A fresh Sudoku — the same for every player — appears each day at midnight UTC.

2. 2

   One attempt, keep your streak alive

   Solve it in a single run. Come back each day to build (and protect) your streak.

3. 3

   Climb the leaderboard

   Your solve time is ranked against everyone else's. Fastest minds rise to the top.

• How Long Should a Sudoku Take? Average Times by Difficulty

  Typical solve times by difficulty — and the habits that make you faster.

• Is Guessing Allowed in Sudoku? What Expert Solvers Actually Do

  Short answer: no — and here's why a well-made puzzle never needs a guess.

• Why Your Sudoku Has No Solution (and How to Fix It)

  A grid that can't be finished almost always means an earlier error. Here's how to find and fix it.

Or jump straight into easy, medium, or hard Sudoku.