Train your logic with bright, relaxing Sudoku puzzles made for quick breaks and thoughtful sessions. Start with a fast 6×6 grid or choose a classic 9×9 puzzle from Easy to Master.
Solve a new Daily puzzle, keep your streak alive, and complete the five-step weekly Trail. Earn up to three mastery stars for a clean, hint-free solve, unlock achievements, track personal bests and statistics, and customize the board with colorful palettes.
Use notes, undo, erase, cell highlighting, and a helpful Hint whenever you need them. Your progress is saved automatically, so you can return to an unfinished puzzle at any time.
How to play
Fill every empty cell with a number.
In a 9×9 puzzle, each row, column, and 3×3 box must contain the numbers 1–9 exactly once. In a quick 6×6 puzzle, each row and column must contain 1–6 exactly once, and each 2×3 box follows the same rule.
Select an empty cell, then tap a number or use the keyboard. Turn on Notes to mark possible numbers. Use Erase to clear a cell and Undo to reverse your last move. Related cells are highlighted, and mistakes are gently marked. A Hint fills the selected empty cell.
Complete the whole grid correctly to solve the puzzle and earn mastery stars.