Sudoku is a logic-based number placement puzzle. Fill the 9×9 grid so that every row, column, and 3×3 box contains the digits 1 through 9 exactly once. Great for sharpening logical thinking.
How to Play
Choose a difficulty level: Easy, Medium, Hard, or Expert.
Click a cell and type a number from 1 to 9.
No number can repeat in any row, column, or 3×3 box.
Use notes to track possibilities for tricky cells.