ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Sudoku Tips

Updated on December 29, 2007

What is Sudoku?

Sudoku is an addictive game of logic.

A typical Sudoku puzzle is a large square containing nine medium squares, or 'regions', three on each side. Each region in turn contains nine small squares or cells, three on each side.

And the game starts with a sprinkling of single-digit numbers in the cells, and with most of the cells blank.

A typical Sudoku

A typical Sudoku
A typical Sudoku

Rules of Sudoku

The rules for Sudoku are simple:

  • Place one digit (from 1 - 9) in each cell
  • A number can only appear once in each row
  • A number can only appear once in each column
  • A number can only appear once in each 3x3 region

Let's Sudoku!

Sudoku Tips: Choose the right level

Most sources of provide Sudoku puzzles over a range of difficulties from easy to fiendishly difficult.

If you're a beginner, start with the easy puzzles. Maybe even the 'mini' Sudoku with fewer cells to solve.

Once you find that level is too easy, progress to the next level. Before long, you'll be hooked, and progressing to the most difficult puzzles.

Sudoku Tips: Use a Pencil for Marking Up

You'll probably start working on your Sudoku by scanning the cells, and identifying some obvious number placements. You might feel confident in using a pen to write in these numbers.

But then comes the stage when scanning is no longer enough. There are multiple possibilities for each of the remaining empy cells, and its far too much information to keep in your head.

You need to mark up the cells in some way, to record the different possibilities, and to do this, its best to use a soft pencil, plus an eraser, to remove your markings as you logically eliminate them from the possibilities.

Sudoku Tips: Counting

Counting is a simple technique that is a good place to start for solving your Sudoku.

You can choose a row, column or region, particularly one that has only one blank cell, and count through the numbers from 1 to 9 to identify the missing numbers.

Alertnatively, you can choose a blank cell, and work through the numbers 1 to 9, checking each number to see if if can go in that cell, in an attempt to identify the single unique number that belongs in that cell

Comments

    0 of 8192 characters used
    Post Comment

    • PrintableSudoku profile image

      PrintableSudoku 

      10 years ago from Huntington Beach, CA

      thanks for the sudoku tips!

    • profile image

      Pat 

      10 years ago

      A great place to learn how to play Sudoku is <a href="http://www.sudokulearningcenter.com">Sudoku Learning Center</a>.

      It has detail instructions on the various techniques used to solve Sudoku puzzles, including advanced techniques such as x-wings,swordfish, coloring and forcing chains

      It has specially developed puzzles that allow you to focus on a particular technique and a web based graphical interface to give hints when needed.

      Regards

      Pat

    working

    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://hubpages.com/privacy-policy#gdpr

    Show Details
    Necessary
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
    Features
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Marketing
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Statistics
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)