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Sudoku Online

Sudoku rules: The playing field is a 9x9 square, divided into smaller squares with a side of 3 cells. The main objective of the game is to fill the empty cells with numbers from 1 to 9 so that in each row, in each column and in each 3x3 square each number occurs only once. Can you fill in all the cells correctly?

How to play Sudoku?

  1. Enter the first number

    Start playing by clicking on any empty cell you want to fill. Your task is to choose a number from 1 to 9 so that it does not occur twice in the same row, column or 3x3 square. Enter the first number
  2. Fill in the cells

    Fill in the cells with numbers one by one. To make solving a puzzle easier, use the note mode, and if you are stuck, you can use a hint. Fill in the cells
  3. Solve the puzzle

    Once all cells are correctly filled with numbers, the puzzle is solved! Check your time and try to improve your score next time. And also remember that the more difficult the level, the more interesting it is to solve Sudoku! Solve the puzzle

About Sudoku

Sudoku is a great way to pass the time and practice your logic skills.
The game first appeared in Japan in 1984, where it was given the name "Sudoku". Su means Number and Doku means One. One of the reasons why Sudoku puzzles are so popular in Japan is that Japanese is not a very good language for crossword puzzles, so number puzzles have been much more successful in Japanese culture. Regular Sudoku games improve memory, mental clarity and slow down the aging of brain cells.
Interesting fact
There are 6,670,903,752,021,072,936,960 possible combinations for completing a 9-by-9 Sudoku grid, but only 5,472,730,538 of them really count for different solutions. Needlessly to say, you need a handful of lifetimes to solve all of them.

Sudoku Online
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