4x4 Sudoku

The smallest sudoku: fill in the numbers 1 to 4. Tap a square, then tap a number.

Mistakes 0

How to play

Each row, each column and each 2×2 box outlined in bold contains the numbers 1 to 4 exactly once.

Use the numbers already given as clues and start with squares where only one number fits.

Printable worksheets (with answers)

6 puzzles per page, US Letter, 3 pages (answers on the last 1). Free to copy for class and home.

EasyBook 1PDF, 92 KB

MediumBook 1PDF, 90 KB

See the printable sudoku page for what you can do with them →

For teachers and parents

No math needed: it's about figuring out which number can't go where.
Once 4x4 feels easy, try 6x6, then Easy 9x9 sudoku.

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