Free Online Sudoku Puzzle

Free Online Sudoku Puzzle Overview

Our web sudoku follows in the number puzzle's classic tradition, no pen or pencil needed! As you start the puzzle you can choose your difficulty. We offer sudoku for beginners, medium sudoku, and sudoku for experts. Additionally, the puzzle is updated daily, giving you a new sudoku challenge each and every day!

The History of Sudoku Puzzles

Sudoku puzzles have a rich history.

Number puzzles became popular in the late 1800s in France, when newspapers began to publish
partially-filled number grids on their pages. The number puzzles were not the exact same as sudokus, though, because they contained some double-digit numbers and did not have sub-squares. The rows and columns did, though, add up to the same number.

These number puzzles disappeared around World War I, but reemerged in 1979 when an Indiana man named Howard Garns published the first modern sudoku puzzle. His sudoku used a 9x9 square, and all rows and columns needed to contain the numbers 1-9. Sudoku games were introduced in Japan five years later, where the number puzzles became immensely popular and were officially coined 'sudoku.' In 2004, The Times in London published its first daily sudoku, reintroducing the sudoku puzzle to Western culture. Sudokus quickly spread to newspapers all over the world, delighting users every single day.

Of course, online sudoku puzzles like this one soon followed.

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