THE PLAYBOOK · 850305
How to play Jigsaw Sudoku
A round of Jigsaw Sudoku at 850305 begins with understanding the objective. Fill each row, column and irregular coloured nine-cell region with 1–9 once. The learning focus here is read the feedback, supported by the rule notes below.
6 finite checked puzzles, with local saved progress. No claim of unlimited daily puzzles or calibrated difficulty.
Read the feedback
Status messages explain the current state and rejected actions. Check them when an action does not behave as you expected.
Your goal
Fill each row, column and irregular coloured nine-cell region with 1–9 once.
Step by step
- Select an editable cell.
- Enter a value using the keypad or keyboard; Notes stores candidates.
- Read the region, cage, arrow or outside clues alongside the normal constraints.
- Check entries verifies the completed board; Undo reverses your last input.
- 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.
A useful example
The coloured region, not a conventional 3×3 box, defines the third no-repeat constraint.
Watch out for this
A full board must obey every extra rule. Reveal supplies assistance; it is not an earned deduction.
Common questions
What completes a round?
Fill each row, column and irregular coloured nine-cell region with 1–9 once.
Which controls should I use?
Click or tap cells and the digit pad. Use Notes, Undo and Reveal selected. Large boards scroll inside the game.
What is included in this edition?
6 finite checked puzzles, with local saved progress. No claim of unlimited daily puzzles or calibrated difficulty.
Does play involve an account or cash?
No. Play is free, without registration, deposits, bets or cash prizes.