Free daily brain warm-up
Mini Sudoku
A compact 4×4 puzzle with the same satisfying logic as classic sudoku, solvable in under three minutes. Perfect for your morning coffee or a quick mid-day break.
How it works
Same logic, smaller grid
Tap a cell
Select any empty cell on the 4×4 grid. Bold numbers are given clues and can't be changed.
Pick a digit
Tap 1, 2, 3, or 4 on the number pad. Each digit must appear exactly once in every row, column, and 2×2 box.
Complete the grid
Fill every cell correctly to solve the puzzle. Use Check to flag mistakes, or Undo to step back. Most grids take under 3 minutes.
Why mini?
All the logic, a fraction of the time
Under 3 minutes
A 4×4 grid has far fewer cells than a 9×9 -- you get the satisfaction of a complete solve in a single coffee break.
Perfect for beginners
The smaller grid makes the logic easier to follow. Mini sudoku is the ideal way to learn the rules before graduating to the full puzzle.
Two puzzles a day
Mini Sudoku runs alongside the full 9×9 on the same daily page, two puzzles, two different challenges, one free visit.
FAQ
Common questions
What is mini sudoku?
Mini Sudoku is a compact 4×4 puzzle. The rules are identical to classic 9×9 sudoku: fill every row, column, and 2×2 box with the digits 1–4 without repeating. It's quicker to solve and great for a daily warm-up.
How is it different from regular sudoku?
The grid is 4×4 instead of 9×9, using only digits 1–4. Everything else is the same: no digit can repeat in any row, column, or box. Most people finish in under 3 minutes.
Is mini sudoku good for beginners?
Yes. it's an ideal starting point. The smaller grid makes the logic easier to see while you learn. Once you're comfortable, the full 9×9 sudoku is on the same daily page.
Can I play on my phone?
Yes. the puzzle is fully touch-optimised. Tap a cell, then tap a number. Works on iPhone, iPad, Android, and all modern browsers with no download needed.
Today's Mini Sudoku is ready
Free, browser-based, no sign-up required.