Microsoft Sudoku

Enjoy free online sudoku puzzles and enhance your logical thinking abilities. This intriguing brain-teaser from Microsoft’s game collection offers two gameplay modes. Classic sudoku features 9x9 grids made up of standard 3x3 blocks. You will receive a maximum of 3 hints per level, but you’re encouraged to use notes to tackle the sudoku puzzles free online. Additionally, there’s an option to highlight incorrect entries to avoid duplicates while you play. 

In addition to the traditional sudoku, there are also irregular levels accessible in 4 different difficulty settings. The numbers must remain unique in each row, column, or house, though the shapes of the houses have random borders that are not square. This exciting puzzler is sure to captivate all free board game enthusiasts.