How to Play Jigsaw Sudoku

THE PLAYBOOK · NMGAFT

How to play Jigsaw Sudoku

Jigsaw Sudoku gives you a focused activity to play in your browser. Fill each row, column and irregular coloured nine-cell region with 1–9 once. Use the example below to understand a decision. Begin with the solo mode shown on the page. Keep the game area visible while you use its controls.

This collection contains 6 puzzles. Progress is saved in this browser. The same puzzle can appear again; the collection is not labelled with calibrated difficulty levels.

Focus on one rule

Choose one rule to keep in mind for this round. Apply it consistently rather than guessing what another version might allow. Use the example to check your reasoning.

Your goal

Fill each row, column and irregular coloured nine-cell region with 1–9 once. Use the instructions to see which actions move you towards it. Check the rules when you are unsure.

Step by step

1. Select an editable cell.
2. Enter a value using the keypad or keyboard; Notes stores candidates.
3. Read the region, cage, arrow or outside clues alongside the normal constraints.
4. Check entries verifies the completed board; Undo reverses your last input.
5. New puzzle selects another included puzzle.

Controls

Click or tap cells and the digit pad. Use Notes, Undo and Reveal selected. Large boards scroll inside the game. Keep the playing area visible while using these controls. Return to the rules if the result is unexpected.

A useful example

The coloured region, not a conventional 3×3 box, defines the third no-repeat constraint. Apply the same reasoning to the position in your own round. Notice the change in the playing area.

Watch out for this

A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction. Compare the situation with the worked example. Read one step at a time and try it on the playing area. Match the instruction to the control you use.

Common questions