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Sudoku Solving Techniques
Scanning technique
The easiest way to start a Sudoku puzzle is to scan rows and columns within each 3*3 block, eliminating numbers or squares and finding situations where only a single number can fit into a single square. The scanning technique is usually enough to solve easy sudokus all the way to the end. You can also use the scanning technique for hard puzzles up to the point where no further progress can be made and more advanced solving techniques are required.
Analyzing technique
As Sudoku puzzles get harder you will find the scanning method described above is not enough and more sophisticated solving techniques must be used. Hard puzzles require deeper logic analysis which is done with the help of pencil marks. Sudoku pencil marking is the process of writing small numbers inside the squares to identify which ones may fit in. After pencil marking the puzzle, you can analyze the results, identify special number combinations, and understand which numbers should be placed where.
What is Sudoku
The idea behind sudoku is to fill the 9x9 grid with digits so that each column, each row, and each of the nine 3×3 block contain all of the digits from 1 to 9.
Daily sudoku challenges
One of the best ways to improve and maintain your brain functionality is by playing a sudoku game each day, In Red Sudoku you can play high quality sudoku games free.