The History of Sudoku
The complete history of Sudoku spans over 200 years — from a Swiss mathematician's theoretical concept, to an unexpected hit in a Japanese magazine, to a global phenomenon in the early 21st century.
Euler's Latin Squares
Swiss mathematician Leonhard Euler devised the concept of "Latin squares" — an N×N array where each number appears exactly once in each row and column. This is the core rule of Sudoku. Euler could never have imagined his theory would become the world's most popular pencil-and-paper game over 200 years later.
"Number Place" in the US
American architect Howard Garns published "Number Place" in Dell Magazine — a number-placement puzzle with rows and columns 1-9, plus the added constraint of 3×3 boxes. This was the direct predecessor of modern Sudoku.
"Sudoku" is Born in Japan
Japanese puzzle publisher Nikoli introduced the game and named it "Sudoku" (short for "Sūji wa dokushin ni kagiru" — "the digits must be single"). Nikoli added two key rules: puzzles must have a unique solution, and initial digits must be symmetrically placed.
Global Explosion
New Zealand judge Wayne Gould developed a Sudoku-generating program and pitched the puzzle to The Times in Britain. After publication, it spread like wildfire worldwide, sparking what became known as the "Sudoku explosion." From Tokyo subways to the New York Times, Sudoku became a universal pastime.
Sudoku in the Digital Age
Sudoku has evolved from paper to smartphone apps and websites. The World Sudoku Championship is held annually, and hundreds of millions of people play worldwide. The magic of Sudoku: just 9 digits, yet capable of generating an infinite variety of puzzles.