Sudoku
Nine by nine squares, every digit exactly once. With a unique solution.
0Points
Thinking Games · 16 to 20 years
How to play Sudoku
- Every row, every column and every 3 by 3 block contains the digits 1 to 9 exactly once.
- Pick a square and tap a digit.
- Use the pencil mode to keep notes.
- Fast and without mistakes earns three stars.
Level
Instructions
How you play
- Every row, every column and every 3 by 3 block contains the digits 1 to 9 exactly once.
- Pick a square and tap a digit.
- Use the pencil mode to keep notes.
- Fast and without mistakes earns three stars.
Controls: Tap or mouse, number keys and arrow keys.
What you train
Logical reasoning, Concentration, Working memory
Every Sudoku is freshly generated and has exactly one solution. Level 1 leaves many digits in place, level 3 demands advanced techniques. Notes for each square, error checking and a clock: the faster and cleaner you are, the more points for your personal best.
Fact sheet
More Thinking Games
Other age groups
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