MINI · 4×4
4×4 Sudoku — a gentle start
The smallest Sudoku variant: place 1–4 once per row, column, and 2×2 box. Perfect for learning the rules, playing with kids, or finishing a round in 1–3 minutes.
Why pick 4×4
- Lowest barrier to entry for first-time Sudoku players
- Finishes in 1–3 minutes — fits short breaks
- Kid-friendly thanks to the 1–4 digit set
- A stepping stone for learning techniques before classic 9×9
Who it's for
If you're new to Sudoku, want something quick during a break, or are introducing the game to kids, start here. Try Easy difficulty first.
Scoring & ranking
4×4 uses the same scoring formula and global ranking. Everyone on the same UTC date, board size, and difficulty solves the exact same puzzle.