Sudoku - Free Online Game

The Sudoku logic puzzle has a challenging game principle: enter the correct number from 1 to 9 in all the cells - online, free and without registration!

History of Sudoku Instructions
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Sudoku: Thinking and Puzzle Game

The logic based number puzzle Sudoku challenges you with a tricky but easy to learn game principle: fill every box with the correct number! The challenging puzzle was first known as Number Place before it became a worldwide hit. Start a round of brain training now and get fit with the free online puzzle game Sudoku


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History of Sudoku

Sudoku is also known as Suduko, Soduku or Sodoku and, despite its name, is not originally from Asia. At the end of the 19th century, French newspapers first published magic squares with 9×9 cells and missing numbers. In a magic square, the sum of the numbers in all columns, rows and diagonals is equal. However, these were not quite Sudoku puzzles, as they also contained two-digit numbers, for example, and at the beginning of the First World War, these newspaper puzzles disappeared from the scene. It was not until 1979 that the Sudoku game principle designed by American puzzle engineer Howard Garns was published as Number Place in New York puzzle magazines. It is unclear to what extent he was inspired by the French dailies. In 1984, the game found its way to Japan, where it was called Sudoku.


  • Enter the numbers from 1 to 9 in the empty fields of the Sudoku board so that each number appears only once per column, per row and per block (3×3 subsquare)!
  • Memorize which numbers are possible for a field by pressing Notes and noting possible numbers for later.
  • Click on a field and click on the trash can icon to delete the entered number.
  • Use the Check function to display incorrectly entered numbers. As soon as all fields of the Sudoku puzzle contain the correct number, you have won the game and can enter your name in the High Score list.


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