Sudoku Maker

About this worksheet maker

Sudoku is a gentle introduction to logical thinking: every row, column, and box must hold each item exactly once. This free sudoku maker builds child-friendly puzzles — small 4x4 grids that use pictures instead of numbers, so even pre-readers can reason through them, plus number grids for children who are ready.

Picture sudoku keeps the logic without the reading load. A child looks at what is already placed, works out what is missing, and learns to check a guess against the whole grid — early reasoning skills that carry far beyond the puzzle itself.

You can choose a theme so the pictures match your class, and every puzzle prints with an answer key. It runs in the browser with no account and nothing to install, works in 11 languages, and is completely free to use.

How to use it in class

• Choose a 4x4 picture grid for the youngest children or a number grid for older ones.
• Print the puzzle and remind children that each picture appears once in every row, column, and box.
• Encourage children to look for a row or box that is nearly full and fill the gap first.
• Check the finished grid against the printed answer key.

Worksheet ideas

• Use a picture sudoku as a hands-on logic centre for early-years children.
• Pair a themed sudoku with a topic so the pictures feel familiar.
• Solve one together on the board, thinking aloud, before children try their own.
• Offer a number sudoku as an extension for children ready for a challenge.