Hints
Sudoku with hints that explain every move
Ruedoku is a free Sudoku game with hints for players who want to learn, not just reveal an answer. The Hint button explains the next logical placement so you can build solving instincts while playing.
How the hint workflow helps
A good Sudoku hint should preserve the puzzle. Ruedoku highlights a useful cell and describes the reason a number belongs there. That gives you a nudge while keeping the solve logical.
If you are stuck, turn on candidate marks first, then ask for a hint. Seeing the candidate grid next to the explanation makes patterns easier to remember.
Ask for one move
Use Hint when you need a single next step, not a full puzzle reveal.
Watch Auto Play
Let the board apply moves step by step when you want to study a solve path.
Review the tactic
Follow up with guides for naked singles, locked candidates, and X-Wing.
When to use hints
- After scanning rows, columns, and boxes without finding a placement.
- When candidate marks are visible but the next elimination is unclear.
- When learning a new technique and you want to see it in a live puzzle.
- When Auto Play can demonstrate several logical moves in sequence.
FAQ
What kind of hints does Ruedoku give?
Ruedoku hints point to a logical next move and explain why it works, such as a single candidate or a hidden single in a row, column, or box.
Can hints teach me Sudoku strategies?
Yes. Hints are designed to show the technique behind a move so you can learn patterns instead of copying answers.
What is Auto Play for?
Auto Play applies the next logical move step by step. It is useful when you want to study how the puzzle progresses without solving the whole board manually.