🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 110 (from laksa004)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa110.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://sudoku.com/how-to-play/sudoku-rules-for-complete-beginners/\')), getAhrefsUnparsedNoserviceFromURL(\'https://sudoku.com/how-to-play/sudoku-rules-for-complete-beginners/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/sudoku.com\/how-to-play\/sudoku-rules-for-complete-beginners\/","crawl_time":1775839829,"first_indexed_time":1543928134,"http_code":200,"src_unparsed":"com,sudoku!\/how-to-play\/sudoku-rules-for-complete-beginners\/ s443","src_root_hash":"2967727419741620910","history_drop_reason":null,"meta_title":"Sudoku Rules for Complete Beginners | Play Free Sudoku, a Popular Online Puzzle Game","meta_descriptions":["These basic rules will help complete beginners to learn how to play Sudoku step by step and will give an opportunity to go through the main principles of game in order to improve their skills."],"attrs_boilerpipe_text":"Sudoku Rule № 1: Use Numbers 1-9\nSudoku is played on a grid of 9 x 9 spaces. Within the rows and columns are 9 “squares” (made up of 3 x 3 spaces). Each row, column and square (9 spaces each) needs to be filled out with the numbers 1-9, without repeating any numbers within the row, column or square. Does it sound complicated? As you can see from the image below of an actual Sudoku grid, each Sudoku grid comes with a few spaces already filled in; the more spaces filled in, the easier the game – the more difficult Sudoku puzzles have very few spaces that are already filled in.\nSudoku Rule № 2: Don’t Repeat Any Numbers\nAs you can see, in the upper left square (circled in blue), this square already has 7 out of the 9 spaces filled in. The only numbers missing from the square are 5 and 6. By seeing which numbers are missing from each square, row, or column, we can use process of elimination and deductive reasoning to decide which numbers need to go in each blank space.\nFor example, in the upper left square, we know we need to add a 5 and a 6 to be able to complete the square, but based on the neighboring rows and squares we cannot clearly deduce which number to add in which space. This means that we should ignore the upper left square for now, and try to fill in spaces in some other areas of the grid instead.\nSudoku Rule № 3: Don’t Guess\nSudoku is a game of logic and reasoning, so you shouldn’t have to guess. If you don’t know what number to put in a certain space, keep scanning the other areas of the grid until you seen an opportunity to place a number. But don’t try to “force” anything – Sudoku rewards patience, insights, and recognition of patterns, not blind luck or guessing.\nSudoku Rule № 4: Use Process of Elimination\nWhat do we mean by using “process of elimination” to play Sudoku? Here is an example. In this Sudoku grid (shown below), the far left-hand vertical column (circled in Blue) is missing only a few numbers: 1, 5 and 6.\nOne way to figure out which numbers can go in each space is to use “process of elimination” by checking to see which other numbers are already included within each square – since there can be no duplication of numbers 1-9 within each square (or row or column).\nIn this case, we can quickly notice that there are already number 1s in the top left and center left squares of the grid (with number 1s circled in red). This means that there is only one space remaining in the far left column where a 1 could possibly go – circled in green. This is how the process of elimination works in Sudoku – you find out which spaces are available, which numbers are missing – and then deduce, based on the position of those numbers within the grid, which numbers fit into each space.\nSudoku rules are relatively uncomplicated – but the game is infinitely varied, with millions of possible number combinations and a wide range of levels of difficulty. But it’s all based on the simple principles of using numbers 1-9, filling in the blank spaces based on deductive reasoning, and never repeating any numbers within each square, row or column.","attrs_markdown":"[Classic](https:\/\/sudoku.com\/)[Killer](https:\/\/sudoku.com\/killer)[00h 00mpostcards](https:\/\/sudoku.com\/postcards)[00h 00mSoon Tournament](https:\/\/sudoku.com\/tournaments) [Sep 13Daily Challenges](https:\/\/sudoku.com\/challenges)[Awards](https:\/\/sudoku.com\/awards)[Rules](https:\/\/sudoku.com\/sudoku-rules\/) [Printable Sudoku](https:\/\/sudoku.com\/sudoku-printable)  [Solver](https:\/\/sudoku.com\/sudoku-solver)  [Tips](https:\/\/sudoku.com\/how-to-play\/) [Settings](https:\/\/sudoku.com\/how-to-play\/sudoku-rules-for-complete-beginners\/)\n\nEnglish\n\n- [English](https:\/\/sudoku.com\/how-to-play\/sudoku-rules-for-complete-beginners\/ \"English\")\n- [日本語](https:\/\/sudoku.com\/jp\/asobikata\/wan-quanna-chu-xin-zhenotamenonanpurenoruru\/ \"日本語\")\n- [Italiano](https:\/\/sudoku.com\/it\/come-si-gioca\/regole-del-sudoku-per-principianti-assoluti\/ \"Italiano\")\n- [中文](https:\/\/sudoku.com\/zh\/youxi-guize\/gei-chu-xue-zhe-de-shu-du-gui-ze\/ \"中文\")\n- [Deutsch](https:\/\/sudoku.com\/de\/wie-man-spielt\/sudoku-regeln-fur-komplette-anfanger\/ \"Deutsch\")\n- [Français](https:\/\/sudoku.com\/fr\/comment-jouer\/regles-de-sudoku-pour-les-debutants-complets\/ \"Français\")\n- [Español](https:\/\/sudoku.com\/es\/como-jugar\/reglas-de-sudoku-para-principiantes\/ \"Español\")\n- [Português](https:\/\/sudoku.com\/pt\/como-jogar\/ \"Português\")\n- [Türk](https:\/\/sudoku.com\/tr \"Türk\")\n- [Polski](https:\/\/sudoku.com\/pl \"Polski\")\n- [한국어](https:\/\/sudoku.com\/ko \"한국어\")\n- [ไทย](https:\/\/sudoku.com\/th \"ไทย\")\n- [Tiếng Việt](https:\/\/sudoku.com\/vi \"Tiếng Việt\")\n- [عربى](https:\/\/sudoku.com\/ar \"عربى\")\n- [Español (México)](https:\/\/sudoku.com\/mx \"Español (México)\")\n- [Português (Brasil)](https:\/\/sudoku.com\/br \"Português (Brasil)\")\n- [中文（T）](https:\/\/sudoku.com\/tw \"中文（T）\")\n- [Русский](https:\/\/sudoku.com\/ru\/kak-igrat\/pravila-igry-sudoku-dla-nacinausih\/ \"Русский\")\n\n[Classic](https:\/\/sudoku.com\/)[Killer](https:\/\/sudoku.com\/killer)\n\n[00h 00mpostcards](https:\/\/sudoku.com\/postcards)[00h 00mSoon Tournament](https:\/\/sudoku.com\/tournaments) [Sep 13Daily Challenges](https:\/\/sudoku.com\/challenges)[Awards](https:\/\/sudoku.com\/awards)[Rules](https:\/\/sudoku.com\/sudoku-rules\/)[Settings](https:\/\/sudoku.com\/how-to-play\/sudoku-rules-for-complete-beginners\/)\n\nNew Game\n\nSelect Game Mode\n\nCurrent game progress will be lost\n\nClassic\n\nKiller\n\npostcards\n\n[Easy](https:\/\/sudoku.com\/easy\/)[Medium](https:\/\/sudoku.com\/medium\/)[Hard](https:\/\/sudoku.com\/hard\/)[Expert](https:\/\/sudoku.com\/expert\/)[Master](https:\/\/sudoku.com\/evil\/)[Extreme](https:\/\/sudoku.com\/extreme\/)\n\nRestart\n\n[Easy](https:\/\/sudoku.com\/killer\/easy\/)[Medium](https:\/\/sudoku.com\/killer\/medium\/)[Hard](https:\/\/sudoku.com\/killer\/hard\/)[Expert](https:\/\/sudoku.com\/killer\/expert\/)\n\nRestart\n\nContinue\n\nRestart\n\n[Easy](https:\/\/sudoku.com\/postcards\/event-sudoku)[Medium](https:\/\/sudoku.com\/postcards\/event-sudoku)[Hard](https:\/\/sudoku.com\/postcards\/event-sudoku)[Expert](https:\/\/sudoku.com\/postcards\/event-sudoku)[Master](https:\/\/sudoku.com\/postcards\/event-sudoku)[Extreme](https:\/\/sudoku.com\/postcards\/event-sudoku)\n\nRestart\n\n# How to Play Sudoku?\n![How to Play Sudoku?](https:\/\/sudoku.com\/img\/post-images\/95442434s.jpg)\n\n- **Sudoku Rule № 1: Use Numbers 1-9**\n\nSudoku is played on a grid of 9 x 9 spaces. Within the rows and columns are 9 “squares” (made up of 3 x 3 spaces). Each row, column and square (9 spaces each) needs to be filled out with the numbers 1-9, without repeating any numbers within the row, column or square. Does it sound complicated? As you can see from the image below of an actual Sudoku grid, each Sudoku grid comes with a few spaces already filled in; the more spaces filled in, the easier the game – the more difficult Sudoku puzzles have very few spaces that are already filled in.\n\n- **Sudoku Rule № 2: Don’t Repeat Any Numbers**\n\n![How to play sudoku puzzles?](https:\/\/sudoku.com\/img\/post-images\/Sudoku-Rules-for-Complete-Beginners-1.jpg)\n\nAs you can see, in the upper left square (circled in blue), this square already has 7 out of the 9 spaces filled in. The only numbers missing from the square are 5 and 6. By seeing which numbers are missing from each square, row, or column, we can use process of elimination and deductive reasoning to decide which numbers need to go in each blank space.\n\nFor example, in the upper left square, we know we need to add a 5 and a 6 to be able to complete the square, but based on the neighboring rows and squares we cannot clearly deduce which number to add in which space. This means that we should ignore the upper left square for now, and try to fill in spaces in some other areas of the grid instead.\n\n- **Sudoku Rule № 3: Don’t Guess**\n\nSudoku is a game of logic and reasoning, so you shouldn’t have to guess. If you don’t know what number to put in a certain space, keep scanning the other areas of the grid until you seen an opportunity to place a number. But don’t try to “force” anything – Sudoku rewards patience, insights, and recognition of patterns, not blind luck or guessing.\n\n- **Sudoku Rule № 4: Use Process of Elimination**\n\nWhat do we mean by using “process of elimination” to play Sudoku? Here is an example. In this Sudoku grid (shown below), the far left-hand vertical column (circled in Blue) is missing only a few numbers: 1, 5 and 6.\n\nOne way to figure out which numbers can go in each space is to use “process of elimination” by checking to see which other numbers are already included within each square – since there can be no duplication of numbers 1-9 within each square (or row or column).\n\n![How to solve sudoku puzzles?](https:\/\/sudoku.com\/img\/post-images\/Sudoku-Rules-for-Complete-Beginners-2.jpg)\n\nIn this case, we can quickly notice that there are already number 1s in the top left and center left squares of the grid (with number 1s circled in red). This means that there is only one space remaining in the far left column where a 1 could possibly go – circled in green. This is how the process of elimination works in Sudoku – you find out which spaces are available, which numbers are missing – and then deduce, based on the position of those numbers within the grid, which numbers fit into each space.\n\nSudoku rules are relatively uncomplicated – but the game is infinitely varied, with millions of possible number combinations and a wide range of levels of difficulty. But it’s all based on the simple principles of using numbers 1-9, filling in the blank spaces based on deductive reasoning, and never repeating any numbers within each square, row or column.\n\n### Post navigation\n[Why is Sudoku One of the Most Popular Games for Seniors?](https:\/\/sudoku.com\/how-to-play\/why-is-sudoku-one-of-the-most-popular-games-for-seniors\/)\n\n[Why is Playing Sudoku so Popular?](https:\/\/sudoku.com\/how-to-play\/why-is-playing-sudoku-so-popular\/)\n\n![sudoku app icon](https:\/\/sudoku.com\/img\/icon-app.png)\n\nSudoku.com - Number Games\n\nEasybrain\n\n[©2018-2026 Easybrain. All Rights Reserved.](https:\/\/www.easybrain.com\/)\n\n[Home](https:\/\/sudoku.com\/)\n\n[Classic](https:\/\/sudoku.com\/)\n\n[Killer](https:\/\/sudoku.com\/killer)\n\n[Daily Challenges](https:\/\/sudoku.com\/challenges)\n\n[Tournament](https:\/\/sudoku.com\/tournaments)\n\n[Awards](https:\/\/sudoku.com\/awards)\n\n[Rules](https:\/\/sudoku.com\/sudoku-rules\/)\n\n[Tips](https:\/\/sudoku.com\/how-to-play\/)\n\n[Get in Touch](https:\/\/sudoku.com\/get-in-touch \"Get in Touch\")\n\n[Printable Sudoku](https:\/\/sudoku.com\/sudoku-printable)\n\n[Solver](https:\/\/sudoku.com\/sudoku-solver)\n\nEnglish\n\n- [English](https:\/\/sudoku.com\/how-to-play\/sudoku-rules-for-complete-beginners\/ \"English\")\n- [日本語](https:\/\/sudoku.com\/jp\/asobikata\/wan-quanna-chu-xin-zhenotamenonanpurenoruru\/ \"日本語\")\n- [Italiano](https:\/\/sudoku.com\/it\/come-si-gioca\/regole-del-sudoku-per-principianti-assoluti\/ \"Italiano\")\n- [中文](https:\/\/sudoku.com\/zh\/youxi-guize\/gei-chu-xue-zhe-de-shu-du-gui-ze\/ \"中文\")\n- [Deutsch](https:\/\/sudoku.com\/de\/wie-man-spielt\/sudoku-regeln-fur-komplette-anfanger\/ \"Deutsch\")\n- [Français](https:\/\/sudoku.com\/fr\/comment-jouer\/regles-de-sudoku-pour-les-debutants-complets\/ \"Français\")\n- [Español](https:\/\/sudoku.com\/es\/como-jugar\/reglas-de-sudoku-para-principiantes\/ \"Español\")\n- [Português](https:\/\/sudoku.com\/pt\/como-jogar\/ \"Português\")\n- [Türk](https:\/\/sudoku.com\/tr \"Türk\")\n- [Polski](https:\/\/sudoku.com\/pl \"Polski\")\n- [한국어](https:\/\/sudoku.com\/ko \"한국어\")\n- [ไทย](https:\/\/sudoku.com\/th \"ไทย\")\n- [Tiếng Việt](https:\/\/sudoku.com\/vi \"Tiếng Việt\")\n- [عربى](https:\/\/sudoku.com\/ar \"عربى\")\n- [Español (México)](https:\/\/sudoku.com\/mx \"Español (México)\")\n- [Português (Brasil)](https:\/\/sudoku.com\/br \"Português (Brasil)\")\n- [中文（T）](https:\/\/sudoku.com\/tw \"中文（T）\")\n- [Русский](https:\/\/sudoku.com\/ru\/kak-igrat\/pravila-igry-sudoku-dla-nacinausih\/ \"Русский\")\n\n[Terms](https:\/\/easybrain.com\/terms \"Terms\")[Cookie Policy](https:\/\/sudoku.com\/page\/cookies\/ \"Cookie Policy\")[Privacy](https:\/\/easybrain.com\/privacy \"Privacy\")\n\nWe and our partners store and\/or access information (including personal data such as device identifiers in cookies) on your device to provide, measure, analyze, improve our services and personalize ads and content. To manage your cookie preferences, click here. For more information or to change your preferences at any time go to the [Cookie Policy](https:\/\/sudoku.com\/page\/cookies\/ \"Cookie Policy\").\n\nCookie preferences\n\n- About Cookies\n- Strictly Necessary Cookies\n- Analytics Cookies\n- Advertising and Measurement Cookies\n- More Information\n\nAbout Cookies\n\nCookies are small pieces of text sent to your web browser that assist us in providing our Services according to the purposes described. A cookie file is stored in your web browser and allows our Services or a third-party to recognize you and make your next visit easier and the Service more useful to you. Some of the purposes for which Cookies are installed may also require the User's consent.\n\nCookies can be \"persistent\" or \"session\" cookies. Persistent cookies remain on your personal computer or mobile device when you go offline, while session cookies are deleted as soon as you close your web browser.\n\nStrictly Necessary Cookies\n\nStrictly necessary cookies are set to recognise you when you return to our Website, set up your consent settings, and embed functionality from third party services. Also, these cookies enable us to personalise our content for you and remember your last game progress. These cookies are necessary for the functionality of the Website. You may set your browser to block these cookies, but the Website will not function properly without them.\n\nCookies Used\n\n- Session Cookies\n- Consent Cookies\n- YouTube Cookies\n- Google reCaptcha\n- Cloudflare Load Balancer\n\nAnalytics Cookies\n\nWe may use analytics cookies to track information on how the Website is used so that we can make improvements. We may also use analytics cookies to test new advertisements, pages, features or new functionality of the Website to see how our users react to them.\n\nCookies Used\n\n- Google Analytics\n- <https:\/\/policies.google.com\/privacy?hl=en>\n\nAdvertising and Measurement Cookies\n\nThese types of cookies and other storage technologies such as Pixel Tags are used to deliver advertisements on and through the Service and track the performance of these advertisements. To this end, we may share information about your use of our site with our trusted social media and advertising partners. These cookies may also be used to enable third-parties, including social media and advertising networks to provide measurement services and deliver ads that may be relevant to you based upon your activities or interests.\n\nCookies Used\n\n- AdSense by Google and their partners\n- <http:\/\/www.google.com\/policies\/privacy\/>\n- <https:\/\/support.google.com\/adsense\/answer\/9012903?hl=en-GB&ref_topic=7670012>\n- Ad Manager by Google Ireland Limited\n- <https:\/\/policies.google.com\/privacy>\n- Meta Pixel by Meta Ireland Platform Limited an Meta Platforms Inc.\n- <https:\/\/www.facebook.com\/policies\/cookies>\n- Index Exchange by Index Exchange Inc.\n- [https:\/\/www.indexexchange.com\/privacy](https:\/\/www.indexexchange.com\/privacy\/)\n- OpenX by OpenX Software Ltd (US)\n- <https:\/\/www.openx.com\/legal\/privacy-policy\/>\n- PubMatic by PubMatic, Inc. (US)\n- <https:\/\/pubmatic.com\/legal\/privacy-policy\/>\n- Rise Engage byTypeA Holdings Ltd.\n- <https:\/\/risecodes.com\/video-advertisement-player-privacy-policy\/>\n- Rubicon Project by Magnite Inc. (US)\n- <https:\/\/www.magnite.com\/legal\/advertising-technology-privacy-policy\/>\n- Yieldmo by Yieldmo, Inc.\n- <https:\/\/www.yieldmo.com\/privacy-policy\/>\n- Amazon by Amazon.com, Inc.\n- <https:\/\/aws.amazon.com\/privacy\/>\n- TripleLift by Triple Lift, Inc.\n- <https:\/\/triplelift.com\/privacy\/>\n- Smaato by Smaato, Inc. (US)\n- <https:\/\/www.smaato.com\/privacy\/>\n- LoopMe LoopMe Limited (UK).\n- <https:\/\/legal.loopme.com\/privacy-center#contract-hyartvn1o>\n- Xandr by Xandr,Inc. (USA)\n- <https:\/\/about.ads.microsoft.com\/en-us\/solutions\/xandr\/platform-privacy-policy>\n- TAPPX by TAPPCELERATOR MEDIA, S.L (Spain)\n- <https:\/\/www.tappx.com\/legal\/privacy-policy>\n- Minute Media by Pro Sportority Ltd (Israel)\n- <https:\/\/www.minutemedia.com\/policies\/privacy-policy>\n- Sharethrough by Sharethrough Inc (Canada)\n- <https:\/\/www.sharethrough.com\/privacy-center\/consumer-privacy-notice>\n- Vidazoo by Vidazoo Ltd. (Israel)\n- <https:\/\/vidazoo.gitbook.io\/vidazoo-legal\/privacy-policy>\n- Media.net by Media.net Advertising FZ-LLC (UAE)\n- <https:\/\/www.media.net\/privacy-policy\/>\n- InMobi by InMobi PTE Ltd (Singapore)\n- <https:\/\/www.inmobi.com\/privacy-policy\/>\n- Ogury by Ogury Ltd (UK)\n- <https:\/\/ogury.com\/ogury-website-and-customer-privacy-and-cookie-notice\/>\n- Nexxen by Nexxen Group LLC (US)\n- <https:\/\/nexxen.com\/privacy-policy\/>\n- Blis by Blis Corp Limited (UK)\n- <https:\/\/blis.com\/blis-privacy-policy-for-online-advertising-and-related-uses\/>\n- Start.io by Start.io Inc (US)\n- <https:\/\/www.start.io\/policy\/privacy-policy\/>\n- OMS by Online Media Solutions Ltd (Israel)\n- <https:\/\/onlinemediasolutions.com\/privacy-policy\/>\n- Nativo by Nativo, Inc (US)\n- <https:\/\/www.nativo.com\/legal\/interest-based-ads>\n- AnyClip by AnyClip Inc (US)\n- <https:\/\/anyclip.com\/privacy-policy\/>\n- Open Web Technologies by Open Web Technologies Ltd (Israel)\n- <https:\/\/www.openweb.com\/legal-and-privacy\/privacy\/>\n- Venatus by Venatus Media Limited (England)\n- <https:\/\/www.venatus.com\/privacy-policy>\n\nMore Information\n\nPlease visit our [Cookie Policy](https:\/\/sudoku.com\/page\/cookies\/ \"Cookie Policy\") to learn more about the cookies we use on our Website.\n\nSave\n\nAccept all and Continue","attrs_readable_markdown":"- **Sudoku Rule № 1: Use Numbers 1-9**\n\nSudoku is played on a grid of 9 x 9 spaces. Within the rows and columns are 9 “squares” (made up of 3 x 3 spaces). Each row, column and square (9 spaces each) needs to be filled out with the numbers 1-9, without repeating any numbers within the row, column or square. Does it sound complicated? As you can see from the image below of an actual Sudoku grid, each Sudoku grid comes with a few spaces already filled in; the more spaces filled in, the easier the game – the more difficult Sudoku puzzles have very few spaces that are already filled in.\n\n- **Sudoku Rule № 2: Don’t Repeat Any Numbers**\n\n![How to play sudoku puzzles?](https:\/\/sudoku.com\/img\/post-images\/Sudoku-Rules-for-Complete-Beginners-1.jpg)\n\nAs you can see, in the upper left square (circled in blue), this square already has 7 out of the 9 spaces filled in. The only numbers missing from the square are 5 and 6. By seeing which numbers are missing from each square, row, or column, we can use process of elimination and deductive reasoning to decide which numbers need to go in each blank space.\n\nFor example, in the upper left square, we know we need to add a 5 and a 6 to be able to complete the square, but based on the neighboring rows and squares we cannot clearly deduce which number to add in which space. This means that we should ignore the upper left square for now, and try to fill in spaces in some other areas of the grid instead.\n\n- **Sudoku Rule № 3: Don’t Guess**\n\nSudoku is a game of logic and reasoning, so you shouldn’t have to guess. If you don’t know what number to put in a certain space, keep scanning the other areas of the grid until you seen an opportunity to place a number. But don’t try to “force” anything – Sudoku rewards patience, insights, and recognition of patterns, not blind luck or guessing.\n\n- **Sudoku Rule № 4: Use Process of Elimination**\n\nWhat do we mean by using “process of elimination” to play Sudoku? Here is an example. In this Sudoku grid (shown below), the far left-hand vertical column (circled in Blue) is missing only a few numbers: 1, 5 and 6.\n\nOne way to figure out which numbers can go in each space is to use “process of elimination” by checking to see which other numbers are already included within each square – since there can be no duplication of numbers 1-9 within each square (or row or column).\n\n![How to solve sudoku puzzles?](https:\/\/sudoku.com\/img\/post-images\/Sudoku-Rules-for-Complete-Beginners-2.jpg)\n\nIn this case, we can quickly notice that there are already number 1s in the top left and center left squares of the grid (with number 1s circled in red). This means that there is only one space remaining in the far left column where a 1 could possibly go – circled in green. This is how the process of elimination works in Sudoku – you find out which spaces are available, which numbers are missing – and then deduce, based on the position of those numbers within the grid, which numbers fit into each space.\n\nSudoku rules are relatively uncomplicated – but the game is infinitely varied, with millions of possible number combinations and a wide range of levels of difficulty. But it’s all based on the simple principles of using numbers 1-9, filling in the blank spaces based on deductive reasoning, and never repeating any numbers within each square, row or column.","meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

2 hours ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://sudoku.com/how-to-play/sudoku-rules-for-complete-beginners/
Last Crawled	2026-04-10 16:50:29 (2 hours ago)
First Indexed	2018-12-04 12:55:34 (7 years ago)
HTTP Status Code	200
Meta Title	Sudoku Rules for Complete Beginners \| Play Free Sudoku, a Popular Online Puzzle Game
Meta Description	These basic rules will help complete beginners to learn how to play Sudoku step by step and will give an opportunity to go through the main principles of game in order to improve their skills.
Meta Canonical	null
Boilerpipe Text	Sudoku Rule № 1: Use Numbers 1-9 Sudoku is played on a grid of 9 x 9 spaces. Within the rows and columns are 9 “squares” (made up of 3 x 3 spaces). Each row, column and square (9 spaces each) needs to be filled out with the numbers 1-9, without repeating any numbers within the row, column or square. Does it sound complicated? As you can see from the image below of an actual Sudoku grid, each Sudoku grid comes with a few spaces already filled in; the more spaces filled in, the easier the game – the more difficult Sudoku puzzles have very few spaces that are already filled in. Sudoku Rule № 2: Don’t Repeat Any Numbers As you can see, in the upper left square (circled in blue), this square already has 7 out of the 9 spaces filled in. The only numbers missing from the square are 5 and 6. By seeing which numbers are missing from each square, row, or column, we can use process of elimination and deductive reasoning to decide which numbers need to go in each blank space. For example, in the upper left square, we know we need to add a 5 and a 6 to be able to complete the square, but based on the neighboring rows and squares we cannot clearly deduce which number to add in which space. This means that we should ignore the upper left square for now, and try to fill in spaces in some other areas of the grid instead. Sudoku Rule № 3: Don’t Guess Sudoku is a game of logic and reasoning, so you shouldn’t have to guess. If you don’t know what number to put in a certain space, keep scanning the other areas of the grid until you seen an opportunity to place a number. But don’t try to “force” anything – Sudoku rewards patience, insights, and recognition of patterns, not blind luck or guessing. Sudoku Rule № 4: Use Process of Elimination What do we mean by using “process of elimination” to play Sudoku? Here is an example. In this Sudoku grid (shown below), the far left-hand vertical column (circled in Blue) is missing only a few numbers: 1, 5 and 6. One way to figure out which numbers can go in each space is to use “process of elimination” by checking to see which other numbers are already included within each square – since there can be no duplication of numbers 1-9 within each square (or row or column). In this case, we can quickly notice that there are already number 1s in the top left and center left squares of the grid (with number 1s circled in red). This means that there is only one space remaining in the far left column where a 1 could possibly go – circled in green. This is how the process of elimination works in Sudoku – you find out which spaces are available, which numbers are missing – and then deduce, based on the position of those numbers within the grid, which numbers fit into each space. Sudoku rules are relatively uncomplicated – but the game is infinitely varied, with millions of possible number combinations and a wide range of levels of difficulty. But it’s all based on the simple principles of using numbers 1-9, filling in the blank spaces based on deductive reasoning, and never repeating any numbers within each square, row or column.
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Within the rows and columns are 9 “squares” (made up of 3 x 3 spaces). Each row, column and square (9 spaces each) needs to be filled out with the numbers 1-9, without repeating any numbers within the row, column or square. Does it sound complicated? As you can see from the image below of an actual Sudoku grid, each Sudoku grid comes with a few spaces already filled in; the more spaces filled in, the easier the game – the more difficult Sudoku puzzles have very few spaces that are already filled in. - Sudoku Rule № 2: Don’t Repeat Any Numbers ![How to play sudoku puzzles?](https://sudoku.com/img/post-images/Sudoku-Rules-for-Complete-Beginners-1.jpg) As you can see, in the upper left square (circled in blue), this square already has 7 out of the 9 spaces filled in. The only numbers missing from the square are 5 and 6. By seeing which numbers are missing from each square, row, or column, we can use process of elimination and deductive reasoning to decide which numbers need to go in each blank space. For example, in the upper left square, we know we need to add a 5 and a 6 to be able to complete the square, but based on the neighboring rows and squares we cannot clearly deduce which number to add in which space. This means that we should ignore the upper left square for now, and try to fill in spaces in some other areas of the grid instead. - Sudoku Rule № 3: Don’t Guess Sudoku is a game of logic and reasoning, so you shouldn’t have to guess. If you don’t know what number to put in a certain space, keep scanning the other areas of the grid until you seen an opportunity to place a number. But don’t try to “force” anything – Sudoku rewards patience, insights, and recognition of patterns, not blind luck or guessing. - Sudoku Rule № 4: Use Process of Elimination What do we mean by using “process of elimination” to play Sudoku? Here is an example. In this Sudoku grid (shown below), the far left-hand vertical column (circled in Blue) is missing only a few numbers: 1, 5 and 6. One way to figure out which numbers can go in each space is to use “process of elimination” by checking to see which other numbers are already included within each square – since there can be no duplication of numbers 1-9 within each square (or row or column). ![How to solve sudoku puzzles?](https://sudoku.com/img/post-images/Sudoku-Rules-for-Complete-Beginners-2.jpg) In this case, we can quickly notice that there are already number 1s in the top left and center left squares of the grid (with number 1s circled in red). This means that there is only one space remaining in the far left column where a 1 could possibly go – circled in green. This is how the process of elimination works in Sudoku – you find out which spaces are available, which numbers are missing – and then deduce, based on the position of those numbers within the grid, which numbers fit into each space. Sudoku rules are relatively uncomplicated – but the game is infinitely varied, with millions of possible number combinations and a wide range of levels of difficulty. But it’s all based on the simple principles of using numbers 1-9, filling in the blank spaces based on deductive reasoning, and never repeating any numbers within each square, row or column. ### Post navigation [Why is Sudoku One of the Most Popular Games for Seniors?](https://sudoku.com/how-to-play/why-is-sudoku-one-of-the-most-popular-games-for-seniors/) [Why is Playing Sudoku so Popular?](https://sudoku.com/how-to-play/why-is-playing-sudoku-so-popular/) ![sudoku app icon](https://sudoku.com/img/icon-app.png) Sudoku.com - Number Games Easybrain [©2018-2026 Easybrain. 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Readable Markdown	- Sudoku Rule № 1: Use Numbers 1-9 Sudoku is played on a grid of 9 x 9 spaces. Within the rows and columns are 9 “squares” (made up of 3 x 3 spaces). Each row, column and square (9 spaces each) needs to be filled out with the numbers 1-9, without repeating any numbers within the row, column or square. Does it sound complicated? As you can see from the image below of an actual Sudoku grid, each Sudoku grid comes with a few spaces already filled in; the more spaces filled in, the easier the game – the more difficult Sudoku puzzles have very few spaces that are already filled in. - Sudoku Rule № 2: Don’t Repeat Any Numbers ![How to play sudoku puzzles?](https://sudoku.com/img/post-images/Sudoku-Rules-for-Complete-Beginners-1.jpg) As you can see, in the upper left square (circled in blue), this square already has 7 out of the 9 spaces filled in. The only numbers missing from the square are 5 and 6. By seeing which numbers are missing from each square, row, or column, we can use process of elimination and deductive reasoning to decide which numbers need to go in each blank space. For example, in the upper left square, we know we need to add a 5 and a 6 to be able to complete the square, but based on the neighboring rows and squares we cannot clearly deduce which number to add in which space. This means that we should ignore the upper left square for now, and try to fill in spaces in some other areas of the grid instead. - Sudoku Rule № 3: Don’t Guess Sudoku is a game of logic and reasoning, so you shouldn’t have to guess. If you don’t know what number to put in a certain space, keep scanning the other areas of the grid until you seen an opportunity to place a number. But don’t try to “force” anything – Sudoku rewards patience, insights, and recognition of patterns, not blind luck or guessing. - Sudoku Rule № 4: Use Process of Elimination What do we mean by using “process of elimination” to play Sudoku? Here is an example. In this Sudoku grid (shown below), the far left-hand vertical column (circled in Blue) is missing only a few numbers: 1, 5 and 6. One way to figure out which numbers can go in each space is to use “process of elimination” by checking to see which other numbers are already included within each square – since there can be no duplication of numbers 1-9 within each square (or row or column). ![How to solve sudoku puzzles?](https://sudoku.com/img/post-images/Sudoku-Rules-for-Complete-Beginners-2.jpg) In this case, we can quickly notice that there are already number 1s in the top left and center left squares of the grid (with number 1s circled in red). This means that there is only one space remaining in the far left column where a 1 could possibly go – circled in green. This is how the process of elimination works in Sudoku – you find out which spaces are available, which numbers are missing – and then deduce, based on the position of those numbers within the grid, which numbers fit into each space. Sudoku rules are relatively uncomplicated – but the game is infinitely varied, with millions of possible number combinations and a wide range of levels of difficulty. But it’s all based on the simple principles of using numbers 1-9, filling in the blank spaces based on deductive reasoning, and never repeating any numbers within each square, row or column.
Shard	110 (laksa)
Root Hash	2967727419741620910
Unparsed URL	com,sudoku!/how-to-play/sudoku-rules-for-complete-beginners/ s443