||How use the board
The key to solve a sudoku is to use logical methods.
Another key is to use the functionalities of the game board, in How use the board there is a detailed explanation of like using it.
Each sudoku has a unique solution that can be reached logically without guessing.
Rules of sudoku
Sudoku is played over a 9x9 grid, divided to 3x3 sub grids called regions.
Fill the empty squares with numbers between 1 and 9 (1 number only in each square). A number should appear only once on each row, column and a region.
A sudoku is valid if has unique solution.
Why is sudoku so addictive?
The rules are simple
This makes it easy for whom it begins in this game.
Any person can play it.
There are several levels of difficulty, for that reason, any person can solve a sudoku.
Entertains and amuses
The sudokus are compulsive, challenging and absorbent.
Increase the logical abilities.
It is not a mathematical game, is a logical game, that develops the logical abilities of whom plays it.
It is easy to keep and to continue.
A puzzle can be begun a day and be continued it any other day.
It is easy to take.
A sudoku can be printed and play it in any moment and place.
It is a front door to the creative spirit of the leisure.