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Educational & Brain Games

Sudoku

Solve an interactive Sudoku grid with levels, instant checks, and hints.

Sudoku grid Fill numbers 1 to 9, then check the solution anytime.
Mistakes0
Filled0/81
Version1/100
How to solve Sudoku
  1. Each row must contain 1 to 9 without repeats.
  2. Each column must contain 1 to 9 without repeats.
  3. Each 3x3 box must contain 1 to 9 without repeats.
  4. Start with cells that have fewer candidates, then use Hint when needed.
Color guide Green: correct number. Orange: close and rule-safe, but not the final answer. Red: wrong or duplicated in row/column/box.
Select a cell, then choose a number.
Select a cell, then choose a number.