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Select a cell, then tap a number to fill in the cell
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Sudoku.club - Number Games
Easybrain

Play Free Sudoku Online – Classic Logic Puzzle for Your Brain

Looking for a game that’s fun, challenging, and mentally rewarding? Sudoku is a timeless puzzle that trains your logic and focus. Play our free Sudoku online game right in your browser — no signup or app required. It’s quick to start and hard to put down.

Whether you're on a break or in the mood to sharpen your mind, Sudoku is the perfect online logic puzzle to play anywhere, anytime.

What Makes Sudoku the World’s Favorite Brain Game?

What is Sudoku? Sudoku is a logic-based number puzzle that doesn’t require math — just reasoning and attention. Its simple rules and satisfying complexity have made it a go-to for millions worldwide, from newspaper readers to mobile gamers.

As a digital version of the beloved puzzle, this Sudoku online version offers a clean and responsive layout, making it easy to enjoy on PC. If you're a fan of daily challenges like those in NYT Sudoku, you'll feel right at home here.

How to Play Sudoku: Simple Rules, Big Challenge

The goal of Sudoku is to fill every cell in a 9×9 grid so that each row, column, and 3×3 section contains all the digits from 1 to 9, without any duplicates.

The Basic Rules:

  • Each row must contain the digits 1–9 once only.
  • Each column must also contain the digits 1–9 once.
  • Each 3×3 box must include 1–9 with no repetition.

With every puzzle, there's only one valid solution — and it can always be solved using logic alone, no guessing needed.

Smart Strategies to Solve Sudoku Faster

Start with What’s Given

Look for rows, columns, or boxes that already have many numbers filled in. These are easier starting points for deduction.

Use Pencil Marks

Write down possible numbers in empty cells. As you eliminate options, you'll zero in on the right choice.

Find Hidden Singles

Sometimes, a number may only logically fit in one position — even if it's not obvious at first glance.

Practice Daily

Playing Sudoku every day boosts pattern recognition and problem-solving skills. Try a puzzle now and see how fast you can get!