Classic logic · Smaller grid

Classic 6x6 Sudoku

Check every row, column, and 2×3 box, then place the one digit from 1–6 that fits.

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  • 6×6 board
  • Clear 2×3 boxes
  • Four real levels
Which digit belongs in the question-mark cell?
A beginner 6×6 Sudoku—find the cell that only one digit can fill.

Reason one cell at a time

Learn 6×6 Sudoku in four steps

Follow one empty cell until its row, column, and 2×3 box leave a single digit.

Find an empty cell

Choose a blank with several useful numbers already nearby.

Check its row

Rule out every digit that already appears across the same row.

Check column and box

Scan down the column and inside the outlined 2×3 box.

Write the only digit

Place the one number from 1–6 that is still possible.

Three constraints, one answer

Four checks for every move

The highlighted board area shows exactly where to look before entering a digit.

No repeats in a row

Every row contains the digits 1–6 exactly once.

No repeats in a column

Every column contains the digits 1–6 exactly once.

No repeats in a 2×3 box

Each thick-outlined box also contains 1–6 exactly once.

One digit per cell

Row, column, and box evidence leave one valid answer.

Support that grows with the learner

Choose a useful challenge

All four named levels are real product profiles. Open Play to choose the exact level.

Guided start

First Steps + Beginner

Rules practice

More givens create frequent single-digit deductions before moving to Beginner.

Choose in Play

Easy practice

Easy

For children who know all three constraints

Fewer starting digits create longer, still no-guess chains of reasoning.

Choose in Play

Challenge

Challenge

For confident independent solvers

Combine row, column, and box evidence across more logical steps.

Choose in Play
Practice A
Practice B

Continue away from the screen

Print 6×6 Sudoku for pencil practice

Create worksheets for home, classroom warm-ups, or quiet independent work.

  • A4 and US Letter
  • Color, low-ink, and line-art styles
  • Optional paired answer pages
  • One, two, or four puzzles per page
Print Sudoku worksheets

What this activity practises

Logical reasoning

Eliminate impossible digits and explain why one answer remains.

Systematic scanning

Move carefully between rows, columns, and 2×3 boxes.

Focus and persistence

Hold several constraints in mind and complete the board step by step.

Ways to use 6×6 Sudoku

Solve together Ask which digits are ruled out before writing the answer.
Classroom warm-up Use one short puzzle to practise precise logic language.
Independent practice Choose Independent guidance or a printed sheet after the rules feel familiar.

Ready for one board?

Start with a smaller classic Sudoku

Choose a level and guidance mode, then solve a real generated 6×6 board.

Go to the online challenge

6×6 Sudoku questions

What age is 6×6 Sudoku for?
It suits children who recognize digits 1–6 and understand “no repeats.” First Steps provides the most starting clues.
Why use 6×6 instead of 9×9?
The smaller board keeps the same row, column, and box logic while reducing the amount a beginner must scan.
Does every puzzle have one solution?
Yes. The generator verifies one unique solution and a complete no-guess logical proof.
What happens when a child gets stuck?
Learn guidance offers staged hints: first a useful cell, then its evidence, and finally the remaining digit.
Can I print more worksheets?
Yes. The printable workspace creates deterministic sets for A4 or US Letter with optional answer pages.

Continue the logic practice

Move from number placement to shapes, patterns, and other real logic puzzles.

Back to puzzles

Classic 6x6 Sudoku

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Puzzle ready.

Puzzle canvas

Hint: Start with the row, column, or 2×3 box that has the fewest empty cells.

1–6 NumberM NotesC CheckH Hint