Sudoku exercises your powers of deductive reasoning and visual acuity.
The objective is to fill a 9x9 grid so that each column, each row, and each of the nine 3x3 boxes (also called blocks or regions) contains the digits from 1 to 9. The puzzle starts as a partially completed grid.
Puzzle set up:
Every puzzle is a 9x9 grid (a total of 81 cells)
Within this grid there are 9 3x3 boxes (also called blocks or regions) that are indicated by a thick line
Every puzzle starts as partially completed.
What you need to solve a Sudoku puzzle:
Start by scanning the puzzle to see where a specific number can be in a given region. Look for where there is only one place left for a number.
Count the different numbers in a row, column and region that connect to one cell to see if there is just one number missing.
Focusing on columns and rows that have the most numbers completed, narrow down the possible numbers for a box and write those numbers lightly in pencil. Looking at these restrictions, you can determine which numbers needs to go where.
Create your own!