How to Play Jigsaw Sudoku

THE PLAYBOOK · SHIDIAO001

How to play Jigsaw Sudoku

Read the aim of Jigsaw Sudoku, then make your first move. 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.

Review a difficult moment

When a decision goes wrong, compare it with the common mistake described below. Start again only when you intend to leave the current round. Keep the objective visible.

Your goal

Fill each row, column and irregular coloured nine-cell region with 1–9 once. Read that aim before choosing your first action. Take a moment to understand the current position.

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. Compare this with the rule that governs the move. 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. A different version of the game may use a different rule. Compare the worked example with your own position. Use the reasoning, not an answer copied from a different board.

Common questions