GAME INSTRUCTIONS
Sudoku game from the Windows company Microsoft. With 4 levels of difficulty, decipher classic Sudoku puzzles in this free online game. Microsoft's games are characterised by many options, well documented, and with help to learn how to play Sudoku. Place the numbers in the grids so that they do not match in the same row or column, using the numbers 1 to 9 in each sub-square and in each row or column.