Sudoku World is a rapidly growing international meeting place for Sudoku addicts.

Su Doku (suji wa dokushinsha ni kagiru) in Japanese means 'solitary number'. The rules of sudoku are simple: you have a grid of 9x9 and you need to place each digit from 1 to 9 into the grid so that every column, row, and 3x3 square must contain one of each of the nine digits.

It may sound like an easy logic puzzle but has layers of hidden complexity. Statistics claim that it is possible to create 6,670,903,752,021,072,936,960 different 9x9 puzzles. It is addictive, absorbing and great fun. Look at the picture: Some of the interesting Sudoku variants you'll find here!

Sudoku World has members from Argentina, Australia, Austria, Bahrain, Bangladesh, Belgium, Brazil, Bulgaria, Canada, Chile, China, Colombia, DRC Congo, Costa Rica, the Czech Republic, Denmark, Egypt, England, Estonia, Ethiopia, Finland, France, Germany, Greece, Greenland, Holland, Hungary, India, Indonesia, Iran, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kenya, Kuwait, Lebanon, Libya, Macedonia, Malaysia, Mexico, Montenegro, Morocco, Nepal, New Zealand, Nigeria, Northern Ireland, Norway, Oman, Pakistan, the Philippines, Poland, Portugal, Romania, Russia, Samoa, Saudi Arabia, Scotland, Serbia, Singapore, Slovakia, South Africa, South Korea, Spain, Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Tanzania, Thailand, Tunesia, Turkey, Ukraine, the United Arab Emirates, Uruguay, USA, Venezuela, Vietnam and Wales.

You don't have to be a black belt Sudoku solver to join Sudoku World. All ages, and all standards, beginners to advanced Sudoku puzzlers, are welcome. Join Sudoku World, stretch your mind and share your thoughts with more than 8,165 puzzler minds.

A Sudoku a day keeps senility at bay!

WARNING: Just don't say that we didn't warn you that Sudoku puzzles are contagious and highly addictive, but enjoy your Sudokuing even though our days are numbered!