Soduku Rules

The puzzle most of the times consists of a 9×9 grid. This grid is made up of 3×3 subgrids called regions or boxes or blocks. So there are a total of 81 cells that make the Soduku, some of these cells contain numbers (the numbers commonly used are 1-9) while most of them are blank. The goal is to put a number in each cell so that each column, row, and region contains the numerals 1–9 exactly once. So, eaxh column, row and region should include all of the numbers from 1 to 9 and none of those numbers twice.

It should be noted that this is the most common form of Soduku (Sudoku), there are ather variations where more numbers are needed or that the regions aren't 3x3 squares or are not even squares. However most of these variation are in most case hader to solve and for more experienced users.

As a matter of fact, you can come across Soduku puzzles that don't even conatin number but characters like letters or symbols. However those are rare. This is because the numbers are sollely used for conveninience, any set of nine characters or symbols can be used to create a Soduku.

To make this short for the most common form of Soduku:

• Every row must contain all the numbers 1-9
• Every column must contain all the numbers 1-9
• Every region (small square) must contain all the numbers 1-9