Free Online Sudoku
1sudoku.com is a website for free online sudoku. The sudoku puzzles are classified according to 5 levels of difficulty: sudoku easy, medium, hard, expert and evil. You can play Sudoku on your mobile, tablet or computer for free.
Our free online Sudoku games are all published correctly (with pre-filled numbers). This means that each puzzle has a logical solution and a single answer. Interesting Sudoku Facts. Playing free Sudoku is one of the most popular online pastimes for people who want to exercise their brains. Give the new Sudoku a try by clicking the 'Play Free Online' button above! Play the number game that adds up to fun! Use simple logic to fill in the puzzle's nine rows and nine columns with numerals 1-9.
Play free sudoku 9x9 online
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Sudoku Variants
Free Online Sudoku 24/7
Although the classic 9x9 grids are the most common, there are several variations of sudoku. There are size variants (larger grids type 16x16 or smaller type 4x4 for children), Sudoku variants with irregular regions, with mathematical or logical constraints. There are also alphabetic sudoku variants as wordoku which use letters instead of numbers.
Print Sudoku
Free Online Solitaire
Print sudoku puzzles for free from 4 to 6 per page, in pdf or html format. You can also print the sudoku solutions or find them online.