Microsoft Sudoku

A full 9x9 number grid sets the pace in Microsoft Sudoku. Classic Sudoku appears here with fresh color, added sound, achievements, daily challenges, and hundreds of puzzles generated across Easy, Medium, Hard, and Expert settings. A second layout changes the shape of the number regions without changing the core rule. Every board still uses digits 1 through 9, and preset values stay locked in place from the first move.

How to play?

Fill empty cells with digits that fit the board without repeating a number in any row, column, or 3x3 house. From the number list, pick a digit and place it in a square, or select the square first and enter the digit after. On the board, use Notes mode to add small candidate numbers when a cell has several possible values. Erase removes a wrong entry from the selected space. Hints reveal the correct value for one cell. In each 3x3 house, check which digit has only one available spot, then scan rows and columns for placements blocked everywhere else.