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Sudoku
Classic 9x9 Sudoku puzzle. Fill every row, column, and 3x3 box with 1-9.
Score: 0
Best: 0
00:00
How to Play
Click a cell, then type a number 1-9. Each row, column, and 3×3 box must contain all digits 1-9 without repeats. Press Delete to clear a cell.
About Sudoku
Sudoku is a logic puzzle that requires no math — just pattern recognition and deduction. Every row, column, and 3x3 box must contain the digits 1 through 9 exactly once. The puzzle starts with some cells filled in, and your job is to figure out the rest.
Sudoku puzzles have exactly one valid solution. The fewer starting clues, the harder the puzzle. Easy puzzles typically have 35-40 clues, while hard puzzles might have only 22-27. This version generates valid puzzles with adjustable difficulty.