Play Sudoku Online for Free

SudokuIt lets you play free Sudoku puzzles online in Easy, Medium, Hard, Expert, Master, Extreme difficulties.

Whether you're just starting out or solving advanced puzzles with ease, we offer a wide variety of sudoku games tailored to your ability. Practice free sudoku online anytime and boost your logical thinking on SudokuIt.com.

History of Sudoku

Sudoku, meaning “single number” in Japanese, is a logic-based puzzle that originated from a number placement game invented in the late 1970s. It gained worldwide popularity in the early 2000s and remains a favorite pastime for millions due to its mix of simplicity and challenge.

Sudoku Games for Every Level

At SudokuIt.com, you’ll find puzzles designed to suit your current skill level. Each game is solved by us using known solving techniques and the higher the level, the more complex solving techniques must be applied.

Tips to Get Started

1. Start with the easiest number: Look for numbers that already appear the most in the grid. Begin by filling in obvious gaps in rows, columns, or boxes.
2. Use pencil notes: Keep track of possible numbers in each cell: this makes solving complex puzzles more manageable and helps avoid mistakes.

New Challenge Every Day

Looking for a new puzzle each day? Visit our daily sudoku section for a fresh challenge. It’s a great way to build a daily habit and track your progress over time.

How to Play Sudoku

The goal of sudoku is to fill a 9×9 grid so that every row, column, and 3×3 box contains the digits 1 through 9: without repeating any numbers within the same row, column, or box.

The rules are simple:

• Each puzzle starts with some numbers already filled in.
• Each row must include every number from 1 to 9 exactly once.
• Each column must include every number from 1 to 9 exactly once.
• Each 3×3 box must include every number from 1 to 9 exactly once.

You don’t need math: just logic, patience, and observation.

Explore more information to improve your skills:

• Sudoku Rules – Learn the core principles behind the game
• Solving Techniques & Tips – Discover advanced strategies and logic methods

Start Playing Sudoku Today

Sharpen your logic, stay focused, and have fun with SudokuIt. Choose your difficulty, start solving, and enjoy the satisfaction of completing a puzzle—one number at a time.

Start a Puzzle Now

What is SudokuIt.com?

SudokuIt.com is a modern, user-friendly sudoku platform where players can enjoy an endless supply of sudoku puzzles in their browser. Our goal is to make sudoku accessible and enjoyable for everyone: from beginners learning the rules to experts mastering advanced solving techniques.