Sudoku Online

Sudoku Online offers daily Sudoku puzzles in multiple difficulty levels and other daily puzzle games.

sudoku-online.org
Sudoku Online homepage screenshot

About Sudoku Online

Sudoku Online is a Spanish-language website for playing Sudoku in a browser. It offers a daily Sudoku, difficulty levels from easy to difficult, and variants including Mini, Extremo, Calcudoku, and a 16x16 Mega Sudoku. Games include controls to check, solve, restart, erase, track time, show possible values, and save or load progress by copying and pasting text.

The site also has printable Sudoku puzzles and a set of daily puzzle games such as crosswords, hangman, mahjong, solitaire, 2048, a flag quiz, and word games.

Key features

  • Daily Sudoku with a new puzzle each day
  • Difficulty levels from easy to difficult
  • Mini, Extremo, Calcudoku and 16x16 Mega Sudoku variants
  • In-game check, solve, restart, erase and timer controls
  • Save and load games by copying and pasting text
  • Printable Sudoku puzzles section
Best for: Spanish-speaking users who want daily Sudoku puzzles and casual puzzle games.
Good for
  • Offers several Sudoku levels and grid sizes
  • Provides a daily Sudoku and other daily puzzle games
  • Includes check, solve, timer and 9x9 statistics tools
Watch out for
  • Content is in Spanish

Sudoku Online at a glance

Official website
sudoku-online.org
Type
Publication
Platforms
Web
Language
Spanish
Country
ES
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026

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Sudoku Online FAQ

How do you play Sudoku on this site?
Fill a 9x9 grid divided into 3x3 boxes with the numbers 1 to 9, without repeating a number in any row, column or box.
How do you save and reload a game?
Copy the text shown in Save game to store it, then paste that text in Load game to restore it.
What other games are available besides Sudoku?
Daily puzzles including a Wordle-style word game, crossword, hangman, mahjong, solitaire, 2048, fruit game and flag quiz.
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