Sodoku or Sudoku? You're in the Right Place!

Many people search for Sodoku — a common misspelling of Sudoku, the classic number puzzle game. Whether you typed "sodoku" or "sudoku," you've found the right site for free online puzzles.

What is Sodoku / Sudoku?

Sudoku (sometimes written as Sodoku or Suduko) is a logic-based number placement puzzle. The goal is to fill a 9×9 grid so that each row, column, and 3×3 box contains the numbers 1 through 9. Some cells come pre-filled as clues — your job is to fill in the rest using pure logic.

Why "Sodoku"?

The word "Sudoku" comes from Japanese "Sūji wa dokushin ni kagiru" (数字は独身に限る), meaning "the digits must be single." Since the pronunciation can be tricky for English speakers, many people accidentally spell it as "sodoku" or "suduko." Don't worry — you're not alone! Both are among the most common search terms for our game.

Play Free Online Now

Jump right into the puzzle above! Start with Easy Sudoku if you're a beginner, or try Medium and Hard for more challenge. Love variants? Check out Killer Sudoku. Bookmark Daily Challenge for a fresh puzzle every day.