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Fill a 9×9 grid so every row, column, and 3×3 box contains the digits 1-9. Each number appears exactly once per row, column, and box. That's it.
Start with Easy puzzles. Look for rows, columns, or boxes missing only one number. Use the hint button when stuck—it reveals one cell at a time. Play daily to build your instinct.
Easy grids give you plenty of clues so you can find your footing before moving to tougher boards.
No guessing required—hints reveal one logical answer at a time so you keep learning as you play.
Tap the HINT button (it shows a checkmark ✓ when active). A question mark appears on an empty cell. Tap the question mark to reveal the answer, or tap it again to hide the hint and keep solving yourself.
Pick a difficulty level and start your first puzzle. No timer. No pressure. Just logic.
Sudoku was invented in 1979 as "Number Place" by Howard Garns. The modern name comes from Japan, where it became a cultural phenomenon in the 1980s.
