Smart Sudoku
A 9×9 sudoku that puts your reasoning to the test, one careful deduction at a time.
Controls
Click or tap a cell to select it, then choose the digit you want to place from the number options.
How to Play
Smart Sudoku is a test of clear thinking. Fill the 9×9 grid so that 1 to 9 each appear once per row, column and 3×3 box, working out each answer from what the surrounding clues will and will not allow.
Not sure where to begin? Our step-by-step guide breaks the reasoning down so the harder puzzles feel far less daunting. Then it is you against the grid.
Tips & Tricks
- Ask where a digit cannot go; ruling out options often reveals the answer faster than hunting for it.
- When a box has one gap left, that cell is usually the quickest win on the board.
- Recheck a row and column together before you commit to a placement.
Frequently Asked Questions
Is Smart Sudoku a good way to sharpen my logic?
Yes. Every cell is solvable by reasoning alone, so regular play is a light, enjoyable workout for pattern-spotting and deduction.
Do I ever need to guess?
No. A proper sudoku always has a single solution reachable through logic, so guessing should not be necessary.
