How to Play Jigsaw Sudoku

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How to play Jigsaw Sudoku

Start Jigsaw Sudoku by looking at the playing area and its controls. Fill each row, column and irregular coloured nine-cell region with 1–9 once. Choose a clear next step rather than rushing through the instructions. Make your first input carefully and watch the result. Choose a clear next step rather than rushing through the instructions.

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.

Notice the feedback

Watch the feedback after an action. A message can explain whether the input was accepted or whether a rule needs attention. Use the example to check your reasoning.

Your goal

Fill each row, column and irregular coloured nine-cell region with 1–9 once. An attractive position is not enough unless the goal is met. 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. Use one clear input at a time.

A useful example

The coloured region, not a conventional 3×3 box, defines the third no-repeat constraint. Your next round may have a different position, so inspect it before acting. Look for the relevant detail.

Watch out for this

A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction. Check the rule before repeating the action. Before your first action, say what you are trying to achieve. Then compare the result with the goal.

Common questions