お爺さんのホームページ


Table Of Contents
*Introduction

*Beginner

*Intermediate

*Advanced

*Example

*Solver

*Topics


Sudoku and Solver

 This website is for the elderly and young men and women of alltypes, from beginners to advanced class, to enjoy   Sudoku  usingSudoku Solver which was developed by author of this website andcan solve "The World's Hardest Sudoku".  It is a  gentlecommentary, so anyone can understand the essence of theSudoku.  The rules of the Sudoku are easy, but  there is a deeppuzzle with fans all over the world.  Come on, let's all enjoy thebrain training workout!
 
　　　　　　　                LET'S  ENJOY　SUDOKU !　　　　　　　　　　

 According to Dr. Arto Inkala, Finland, who developed The World'sHardest Sudoku, “To solve Sudoku, there is no need to  be able toadd.  Logical thinking, attention, and perseverance are needed”. TheWorld's Hardest Sudoku sample and  solution  are as follows.
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
What is the Sudoku?
 It is a puzzle that arranges the numbers from 1 to 9 on the boardof 9X9.  The rules are quite simple, only that the  numbers do notoverlap in the vertical, horizontal or 3X3 area.

☆ Rule 1: Each column must have the numbers 1-9
☆ Rule 2: Each row must have the numbers 1-9
☆ Rule 3: Each 3X3 block must have the numbers 1-9
　
Howard Garns of the United States in 1979 made this puzzle a "Number Place", but did not hit too much.  The name  Sudoku wasborn in 1984 from Nikoli's "The numbers are limited to single".  NewZealander Wayne Gould has developed a   program to create  Sudoku, which has been well received by The Times in the UK in2004.  After that, it became popular   under the name of "Sudoku"or "Number Place" in the wave of internationalization.  Sudoku is apuzzle for brain training,   which anyone can enjoy regardless oflanguage.

Note: The name "Sudoku" is a registered trademark of NIKOLI co.,ltd in Japan.  Outside of thecompany, the name "Number Place" is used.





　Please visit the following website !
         Sudoku and Solver