International Sudoku Day

International Sudoku Day is on the ninth day of the ninth month, a nod to Sudoku enthusiasts who appreciate the significance of the number nine in the puzzle. The essence of the game is simple yet demands maximum concentration and logical thinking.

History

A precursor to Sudoku was first published in 1892 in a French newspaper. This early version was more difficult and required mathematical skills. While many newspapers published similar puzzles, they weren’t quite what we recognize as Sudoku today. The modern Sudoku was developed by architect Howard Garns, who unfortunately passed away before he could witness the global sensation his creation would become.

Interesting Facts

• The game gained significant popularity in Japan, where it was named “Sudoku.” This name has since become universally accepted.
• Sudoku remains popular worldwide, with mobile apps, printed books, and game shows dedicated to the puzzle.
• The World Puzzle Federation officially declared September 9 as International Sudoku Day in 2013.

How to Take Part

Solve a Sudoku on your own, or organize a tournament with friends to see who can complete the puzzle the fastest. Consider challenging yourself with the most difficult puzzles available in various publications or apps.

When is International Sudoku Day in 2024?

International Sudoku Day is observed on September 9 each year.

Observations