The word “Sudoku” is a Japanese word that means “single number” – so many people assume that Sudoku was invented in Japan. However, the truth about the invention of Sudoku is more complicated and more interesting.

Sudoku is one of the most fun and popular online puzzle games, enjoyed by millions of people all over the world. Because Sudoku is a seemingly simple game of numbers 1-9, arrayed on a grid of empty spaces, it’s an easy game for beginners to play. But if you’re a Sudoku beginner, there are some frequently encountered difficulties that might make the game seem hopelessly challenging!