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Aaron Walker
Aaron Walker

Jigsaw Sudoku: The Best Sudoku App for Android with No Ads

Jigsaw Sudoku Download: A Fun and Challenging Way to Train Your Brain

If you love sudoku puzzles, you might want to try jigsaw sudoku, a fun and challenging twist on the classic number game. Jigsaw sudoku, also known as irregular sudoku, geometric sudoku, or nonomino, is a type of sudoku puzzle that uses irregular shapes instead of 3x3 blocks. This adds a new level of difficulty and variety to the game, making it more engaging and stimulating for your brain. In this article, we will explain what jigsaw sudoku is, how it can benefit your brain health, where you can download jigsaw sudoku apps, and how to play jigsaw sudoku with some tips and strategies.

What is Jigsaw Sudoku?

Jigsaw sudoku is a logic-based number puzzle game that follows the same basic rules as regular sudoku. The goal is to fill a grid with numbers from 1 to 9 (or from 1 to N in an NxN grid) such that each number appears only once in each row, column, and region. The difference is that the regions are not fixed 3x3 blocks, but irregular shapes that vary in size and form. These shapes are often outlined by thicker lines or different colors to help you identify them.

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The rules of Jigsaw Sudoku

The rules of jigsaw sudoku are simple:

  • Each row must contain the numbers from 1 to 9 (or from 1 to N) exactly once.

  • Each column must contain the numbers from 1 to 9 (or from 1 to N) exactly once.

  • Each region (irregular shape) must contain the numbers from 1 to 9 (or from 1 to N) exactly once.

  • You cannot repeat a number in a row, column, or region.

You can use logic and deduction to find the correct placement of the numbers. You do not need to guess or use trial and error. There is only one unique solution for each puzzle.

The benefits of Jigsaw Sudoku

Jigsaw sudoku can offer many benefits for your brain health and cognitive skills. Here are some of them:

  • Jigsaw sudoku boosts your logical thinking and problem-solving skills. You have to analyze the grid and use deductive reasoning to find the missing numbers.

  • Jigsaw sudoku improves your memory and recall. You have to remember the numbers that you have placed and the ones that are still available for each row, column, and region.

  • Jigsaw sudoku slows down the negative impact of aging on your brain. Studies have shown that playing puzzles can help prevent cognitive decline and dementia by keeping your brain active and stimulated.

  • Jigsaw sudoku develops your quick-thinking skills. You have to think fast and efficiently to solve the puzzle in a limited time.

  • Jigsaw sudoku helps you improve your concentration and focus. You have to pay attention to the details and avoid distractions while solving the puzzle.

  • Jigsaw sudoku provides a sense of accomplishment and satisfaction. You feel rewarded when you complete a puzzle, especially a difficult one.

  • Jigsaw sudoku reduces stress and anxiety. Playing puzzles can help you relax and calm your mind by diverting your attention from negative thoughts and emotions.

Where to Download Jigsaw Sudoku?

If you want to play jigsaw sudoku on your smartphone or tablet, you can download one of these apps from Google Play Store:

Jigsaw Sudoku by

This app is developed by Easybrain, one of the world's most downloaded sudoku puzzle games developers. It offers thousands of levels with a unique grid layout, daily challenges, seasonal events, hints, notes, undo, eraser, color themes, and more features. You can also customize the difficulty level, from easy to expert, and track your progress and statistics. You can download Jigsaw Sudoku by from this link:

Jigsaw Sudoku by Brainatee

This app is developed by Brainatee, a company that specializes in creating brain games and puzzles. It features hundreds of jigsaw sudoku puzzles with different shapes and sizes, four difficulty levels, hints, notes, timer, auto-check, undo, redo, and more options. You can also play offline and save your game progress. You can download Jigsaw Sudoku by Brainatee from this link:

Sudoku - Classic & Jigsaw by Zeeron

This app is developed by Zeeron, a developer that offers various sudoku games and variants. It includes both classic sudoku and jigsaw sudoku modes, with over 10,000 puzzles in total. You can choose from five difficulty levels, use hints, notes, eraser, undo, redo, and other tools. You can also change the grid size, color theme, font size, and sound effects. You can download Sudoku - Classic & Jigsaw by Zeeron from this link:

How to Play Jigsaw Sudoku?

Playing jigsaw sudoku is similar to playing regular sudoku, but with some differences. Here are some steps to follow:

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  • Look at the grid and identify the regions (irregular shapes) that are outlined or colored differently.

  • Start with the regions that have fewer cells or more clues (numbers given). Try to fill in the numbers that are obvious or easy to find.

  • Use the process of elimination to narrow down the possible candidates for each cell. For example, if a row has 1, 2, 3, 4, 6, 7, and 9 already filled in, then the remaining cells must be either 5 or 8.

  • Use logic and deduction to find the hidden numbers. For example, if a region has two cells that can only be 5 or 8, then no other cell in that region can be 5 or 8.

  • Check your work as you go along. Make sure that you do not violate any of the rules or create any contradictions.

  • If you get stuck, you can use hints or notes to help you out. You can also undo or redo your moves if you make a mistake.

  • Keep going until you fill in all the cells with the correct numbers and solve the puzzle.

Tips and strategies for beginners

If you are new to jigsaw sudoku, here are some tips and strategies to help you get started:

  • Start with easy puzzles that have fewer regions and more clues. This will help you get familiar with the game and build your confidence.

  • Focus on one region at a time. Try to fill in as many numbers as you can in that region before moving on to another one.

  • Look for patterns and symmetries in the grid. Sometimes, the regions are arranged in a way that makes it easier to find the numbers.

  • Use pencil marks or notes to keep track of the possible candidates for each cell. This will help you avoid confusion and mistakes.

  • Don't be afraid to use hints if you need them. They can give you a clue or a nudge in the right direction.

Advanced techniques for experts

If you are an expert at jigsaw sudoku, here are some advanced techniques to challenge yourself:

  • Try harder puzzles that have more regions and fewer clues. This will test your logic and deduction skills more.

  • Use advanced solving methods such as X-wing, swordfish, jellyfish, coloring, forcing chains, etc. These methods involve finding complex patterns and relationships among the cells that can eliminate candidates or reveal numbers.

  • Avoid using hints or notes as much as possible. Try to solve the puzzle using only your brain power.

  • Set a time limit for yourself and try to beat it. This will improve your speed and accuracy.

  • Compete with other players online or offline. This will add some fun and excitement to the game.


Jigsaw sudoku is a fun and challenging way to train your brain and enjoy yourself. It is a type of sudoku puzzle that uses irregular shapes instead of 3x3 blocks. It follows the same basic rules as regular sudoku but adds a new level of difficulty and variety to the game. You can download jigsaw sudoku apps from Google Play Store and play them on your smartphone or tablet. You can also learn how to play jigsaw sudoku with some tips and strategies. Jigsaw sudoku can boost your logical thinking, memory, concentration, quick-thinking, and more. It can also reduce stress and anxiety and provide a sense of accomplishment and satisfaction. Jigsaw sudoku is a great game for anyone who loves puzzles and challenges. Try it today and see how much fun it is!


Here are some frequently asked questions about jigsaw sudoku:

  • What is the difference between jigsaw sudoku and regular sudoku?

Jigsaw sudoku and regular sudoku are both logic-based number puzzle games that follow the same basic rules. The difference is that jigsaw sudoku uses irregular shapes instead of 3x3 blocks as regions. This makes the game more difficult and varied.

  • How many jigsaw sudoku puzzles are there?

There is no definitive answer to this question, as there are many possible ways to create jigsaw sudoku puzzles with different shapes and sizes. However, some sources estimate that there are over 10^18 (a quintillion) possible jigsaw sudoku puzzles.

  • How do I know if a jigsaw sudoku puzzle is valid?

A valid jigsaw sudoku puzzle is one that has only one unique solution and follows the rules of the game. You can check if a puzzle is valid by using logic and deduction to solve it, or by using an online solver or checker tool.

  • What are some of the best jigsaw sudoku apps?

Some of the best jigsaw sudoku apps that you can download from Google Play Store are Jigsaw Sudoku by, Jigsaw Sudoku by Brainatee, and Sudoku - Classic & Jigsaw by Zeeron. These apps offer thousands of levels, different difficulty modes, hints, notes, undo, redo, color themes, and more features.

  • How can I improve my jigsaw sudoku skills?

You can improve your jigsaw sudoku skills by practicing regularly, trying different difficulty levels, learning advanced solving techniques, setting time limits, competing with other players, and having fun.


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