
Sudoku is a puzzle for brain training, which anyone can enjoy regardless of language. After that, it became popular under the name of "Sudoku" or "Number Place" in the wave of internationalization. New Zealander Wayne Gould has developed a program to create Sudoku, which has been well received by The Times in the UK in 2004. The name Sudoku was born in 1984 from Nikoli's "The numbers are limited to single". Howard Garns of the United States in 1979 made this puzzle a "Number Place", but did not hit too much. ☆ Rule 3: Each 3X3 block must have the numbers 1-9 ☆ Rule 2: Each row must have the numbers 1-9 ☆ Rule 1: Each column must have the numbers 1-9 The rules are quite simple, only that the numbers do not overlap in the vertical, horizontal or 3X3 area. It is a puzzle that arranges the numbers from 1 to 9 on the board of 9X9. The World's Hardest Sudoku sample and solution are as follows. Logical thinking, attention, and perseverance are needed”. Arto Inkala, Finland, who developed The World's Hardest Sudoku, “To solve Sudoku, there is no need to be able to add. Come on, let's all enjoy the brain training workout!Īccording to Dr. The rules of the Sudoku are easy, but there is a deep puzzle with fans all over the world.

It is a gentle commentary, so anyone can understand the essence of the Sudoku. This website is for the elderly and young men and women of all types, from beginners to advanced class, to enjoy Sudoku using Sudoku Solver which was developed by author of this website and can solve "The World's Hardest Sudoku".
