Learn methods for solving number place su doku puzzle
How to?
You know number place puzzles? Of course! These grids are everywhere: no website or newspaper without its daily puzzle.
Rules are simple, but as you will see in following pages, there is a real mathematical complexity behind these 81 cases.
Hopefully, some methods and tips exist to solve all puzzles. I have chosen to class these techniques in two categories: basic strategies and advanced strategies. First ones are dedicated to beginners and allowing solving beginner and medium puzzles. Advanced techniques request to be familiar with number place puzzles. After that, you will be able to solve all puzzles: difficult, hard, expert and even diabolical sudoku!
Rules are simples...
The puzzle is a square of 9 by 9 cells divided in 9 squares, called blocks.
Rules are simples:
- Each row must contain number 1 to 9 once.
- Each column must contain number 1 to 9 once.
- Each boxe must contain number 1 to 9 once.
...but the solution could be very hard!
Rules are simple but it could be largely different for solving it. By the way, do you have an idea of the number of grids? One thousand? Ten thousands? One hundred of thousand? one million? one thousand million? A lot of more: visit the history and mathematics of Sudoku section to find the answer!