🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 108 (from laksa028)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa108.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, ml_categories_json AS ml_categories_json, ml_types_json AS ml_types_json, ml_intent_types_json AS ml_intent_types_json, meta_language AS meta_language, attrs_author AS attrs_author, ifNull(toUnixTimestamp(attrs_publish_time), 0) AS attrs_publish_time, ifNull(toUnixTimestamp(attrs_original_publish_time), 0) AS attrs_original_publish_time, ifNull(attrs_is_republished, 0) AS attrs_is_republished, ifNull(attrs_nr_words, 0) AS attrs_nr_words, ifNull(attrs_boilerpipe_nr_words, 0) AS attrs_boilerpipe_nr_words, ifNull(body_ext_links_number, 0) AS body_ext_links_number, ifNull(body_int_links_number, 0) AS body_int_links_number, ifNull(meta_nofollow, 0) AS meta_nofollow, ifNull(meta_noarchive, 0) AS meta_noarchive, ifNull(props_was_rendered, 0) AS props_was_rendered, ifNull(src_redirect, \'\') AS src_redirect, ifNull(download_time_msec, 0) AS download_time_msec, ifNull(download_ttfb_msec, 0) AS download_ttfb_msec, ifNull(download_size, 0) AS download_size FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.createclassicsudoku.com/SolvingSudokuMethods.jsp\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.createclassicsudoku.com/SolvingSudokuMethods.jsp\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.createclassicsudoku.com\/SolvingSudokuMethods.jsp","crawl_time":1776760572,"first_indexed_time":1511019606,"http_code":200,"src_unparsed":"com,createclassicsudoku!www,\/SolvingSudokuMethods.jsp s443","src_root_hash":"7300535793502915508","history_drop_reason":null,"meta_title":"Solving Sudoku Puzzles Methods Explained, Summary of Sudoku Solving Methods","meta_descriptions":["Solving Sudoku Methods Explained. One-Choice, Sole Candidate, Only Candidate, Naked Single; Hidden Single, Elimination, Loner; Subset, Pair, Naked Pair, Naked Twins; SubsetPosition, Hidden Pair, Hidden Twins; Interaction, Box\/Row Claim, Intersection, Locked Candidates, X-Wing, XY-Wing, Guessing, Exhaustive Search."],"attrs_boilerpipe_text":"A\r\n\t\t\t\t\tnumber game (Sudoku) is a puzzle in which missing numbers are to be\r\n\t\t\t\t\tfilled into a 9 by 9 grid of squares which are subdivided into 3 by\r\n\t\t\t\t\t3 boxes so that every row, every column, and every box contains the\r\n\t\t\t\t\tnumbers 1 through 9.\nMethods to solve Sudoku puzzles (or Create Sudoku puzzles)\r\n\t\t\t\tinclude but not limited to:\nBasic Solving Sudoku Methods\nOne-Choice\n a.k.a\nSole Candidate\n, or\nOnly Candidate\n, or\nNaked Single\n.\nElimination\n a.k.a\nHidden Single\n,\r\n\t\t\t\tor\nLoner\n.\nBasic solving sudoku methods do not need you to write\r\n\t\t\t\t\tdown the candidate values for empty squares. Usually very easy or\r\n\t\t\t\t\teasy Sudoku puzzles can be solved by using basic solving methods.\nAdvanced Solving Sudoku Methods\nSubset2\na.k.a\nPair\nor\nNaked Pair\n, or\nNaked Twins\n.\nSubsetPosition2\na.k.a\nHidden Pair\nor\nHidden Twins\nInteraction\na.k.a\nBox\/Row Claim\nor\nIntersection\n, or\nLocked Candidates\n.\nX-Wing\nXY-Wing\nXYZ-Wing\nAdvanced solving sudoku methods need you to write down\r\n\t\t\t\t\tthe candidate values for blank\/empty squares. Usually\nmedium,\r\n\t\t\t\t\t\thard, and very hard Sudoku puzzles\nneed to be solved using both\r\n\t\t\t\t\tbasic and advanced solving sudoku methods.\nSolve Sudoku - Last Resort\nGuessing\nor\r\n\t\t\t\tExhaustive Search\na.k.a.\nGuess-and-check, nishio\n(Japanese name), or\nConflictElimination & Exhaustive Search\n, or\nBrute\r\n\t\t\t\t\tForce\nGuessing method needs you to write down the candidate\r\n\t\t\t\t\tvalues for blank\/empty squares. Usually\nvery hard Sudoku\r\n\t\t\t\t\t\tpuzzles\nneed to be solved using basic, advanced solving sudoku\r\n\t\t\t\t\tmethods, and guessing method.\nOur solver applies methods in the following order:\nOneChoice\nRow-Elimination, Column-Elimination, Box-Elimination\nSubset2Row, Subset2Col, Subset2Box\nSubsetPosition2Row, SubsetPosition2Col, SubsetPosition2Box\nInteraction-RowBox, Interaction-ColBox, Interaction-BoxRow,\r\n\t\t\t\t\tInteraction-BoxCol\nSubset3Row, Subset3Col, Subset3Box, SubsetPosition3Row\nSubsetPosition3Col, SubsetPosition3Box\nSubset4Row, Subset4Col, Subset4Box\nSubsetPosition4Row, SubsetPosition4Col, SubsetPosition4Box\nDoubleRowsOneDigitCheck(X-Wing),\r\n\t\t\t\t\tDoubleColsOneDigitCheck(X-Wing)\nTripleRowsOneDigitCheck, TripleColsOneDigitCheck\nQuadrRowsOneDigitCheck, QuadrColsOneDigitCheck\nXY-Wing-RowBox, XY-Wing-ColBox, XY-Wing-RowCol\nXYZ-Wing- RowBox, XYZ-Wing-RowBox\nConflictElimination, Exhaustive Search\nSolving Sudoku Methods Explained\nThis article answers questions: What are commonly used solving sudoku methods?\r\n      What solving Sudoku methods do we use? In what sequences?\nSolving Sudoku Methods Explained\nThis article answers questions: What are commonly used solving sudoku methods?\r\n      What solving Sudoku methods do we use? In what sequences?","attrs_markdown":"# Chat\nHello, my name is Alex and I am your  assistant.  \n What is your name?\n\n**Message**\n\nSend\n\nClose\n\nChat\n\n× Network Error. Please Try Again\\!\n\n##### Hint\n×\n\nClose\n\n##### Detailed Hint\n×\n\nClose\n\n##### Sudoku Creation Steps\n×\n\nClose\n\n##### Are you sure you want to clear the whole sudoku grid?\n×\n\nCancel\n\nYes, Clear the Grid\n\n##### Share This Sudoku\n×\n\nShare the link\n\nClose\n\n##### Share This Sudoku\n×\n\nShare the link\n\nClose\n\n##### Contact Us\n×\n\nCancel\n\nSubmit\n\n##### Please Subscribe to continue to use this service!!\\!\n×\n\nYou have used our services a lot. [Please subscribe to have unlimited services.](https:\/\/www.createclassicsudoku.com\/subscription.jsp)\n\nSubscribe\n\nClose\n\n##### Please Renew Your Subscription to continue to use this service!!\\!\n×\n\nYour subscription has expired. [Please renew your subscription to have unlimited services.](https:\/\/www.createclassicsudoku.com\/subscription.jsp)\n\nRenew Subscription\n\nClose\n\n##### Please Log In (or Sign Up) to use this service!!\\!\n×\n\nClose\n\n##### Creation\/Solving Steps is NOT available to public\\!\n×\n\nClose\n\n##### Oops... Something is wrong. Please Re-Log In (or Sign Up) to use this service.\n×\n\nClose\n\n##### Please Log In (or Sign Up) first before subscribing Sudoku services\\!\n×\n\nClose\n\n##### Log In\n×\n\nClose\n\nSubmit\n\n##### Forgot Password?\n×\n\nClose\n\nSubmit\n\n##### Change Password\n×\n\nClose\n\nSubmit\n\n##### Sign Up Form\n×\n\nClose\n\nSubmit\n\n##### Change Password Form\n×\n\nClose\n\nSubmit\n\n##### DELETE Saved Sudokus\n×\n\nClose\n\n##### In Development\n×\n\nClose\n\n[Sudoku](\"Fill numbers 1 to 9 to every empty square so that each row,\n\t\t\tcolumn, or box contains numbers 1 to 9.\")\n\n- [MakeSudoku](https:\/\/www.createclassicsudoku.com\/SolvingSudokuMethods.jsp)\n  [Make Sudoku Your Way](https:\/\/www.createclassicsudoku.com\/MakeYourOwnSudoku9by9.jsp) [Make Sudoku Our Way](https:\/\/www.createclassicsudoku.com\/MakeYourOwnSudoku9by9FillRemove.jsp) [Make 16x16 Sudoku](https:\/\/www.createclassicsudoku.com\/MakeYourOwnSudoku16by16.jsp) [Make Simple Sudoku](https:\/\/www.createclassicsudoku.com\/MakeYourOwnSudoku4by4.jsp) [Make a Sudoku Book](https:\/\/www.createclassicsudoku.com\/MakeASudokuBook.jsp)\n- [SolveSudoku](https:\/\/www.createclassicsudoku.com\/SolveYourOwnSudoku9by9.jsp)\n- [PlaySudoku](https:\/\/www.createclassicsudoku.com\/index.jsp)\n- [SudokuPosts](https:\/\/www.createclassicsudoku.com\/posts.jsp)\n- [Resources](https:\/\/www.createclassicsudoku.com\/SolvingSudokuMethods.jsp)\n  [Customize and Download Empty Grids](https:\/\/www.createclassicsudoku.com\/blankgrid.jsp) [Solving Sudoku Explained](https:\/\/www.createclassicsudoku.com\/SolvingSudokuMethods.jsp) [Book @ Amazon](https:\/\/www.amazon.com\/dp\/0996204202) [Book (partial) in HTML pages](https:\/\/www.createclassicsudoku.com\/FreeEbookCreateSudoku-YZ-Shortver\/index.html) [Help Center](https:\/\/www.createclassicsudoku.com\/onepage\/helpcenter.jsp) [FAQ](https:\/\/www.createclassicsudoku.com\/FAQ.jsp) [About Us](https:\/\/www.createclassicsudoku.com\/about-us.jsp)\n\n- [Subscribe](https:\/\/www.createclassicsudoku.com\/subscription.jsp \"Please log in before subscribing\")\n- [Sign Up]()\n- [Login]()\n- [User](https:\/\/www.createclassicsudoku.com\/SolvingSudokuMethods.jsp)\n  [Change Password]() [Manage Saved Sudokus]() [Manage Posted Sudokus]() [Delete My Account](https:\/\/www.createclassicsudoku.com\/deleteMyAccount.jsp)\n- [Logout]()\n\n# Solving Sudoku Methods Explained\nA number game (Sudoku) is a puzzle in which missing numbers are to be filled into a 9 by 9 grid of squares which are subdivided into 3 by 3 boxes so that every row, every column, and every box contains the numbers 1 through 9.\n\nMethods to solve Sudoku puzzles (or Create Sudoku puzzles) include but not limited to:\n\n### Basic Solving Sudoku Methods\n###### [One-Choice](https:\/\/www.createclassicsudoku.com\/solvesudoku_onechoice.jsp)   a.k.a Sole Candidate , or Only Candidate , or Naked Single .\n###### [Elimination](https:\/\/www.createclassicsudoku.com\/solvesudoku_elimination.jsp)  a.k.a Hidden Single , or Loner .\nBasic solving sudoku methods do not need you to write down the candidate values for empty squares. Usually very easy or easy Sudoku puzzles can be solved by using basic solving methods.\n\n### Advanced Solving Sudoku Methods\n###### [Subset2](https:\/\/www.createclassicsudoku.com\/solvesudoku_subset2.jsp) a.k.a Pair or Naked Pair , or Naked Twins .\n###### [SubsetPosition2](https:\/\/www.createclassicsudoku.com\/solvesudoku_subsetposition2.jsp) a.k.a Hidden Pair or Hidden Twins\n###### [Interaction](https:\/\/www.createclassicsudoku.com\/solvesudoku_interaction.jsp) a.k.a Box\/Row Claim or Intersection , or Locked Candidates .\n###### [X-Wing](https:\/\/www.createclassicsudoku.com\/solvesudoku_xwing.jsp)\n###### [XY-Wing](https:\/\/www.createclassicsudoku.com\/solvesudoku_xywing.jsp)\n###### [XYZ-Wing](https:\/\/www.createclassicsudoku.com\/solvesudoku_xyzwing.jsp)\nAdvanced solving sudoku methods need you to write down the candidate values for blank\/empty squares. Usually medium, hard, and very hard Sudoku puzzles need to be solved using both basic and advanced solving sudoku methods.\n\n### Solve Sudoku - Last Resort\n###### [Guessing](https:\/\/www.createclassicsudoku.com\/solvesudoku_guessing.jsp) or Exhaustive Search\n###### a.k.a. **Guess-and-check, nishio**  (Japanese name), or **ConflictElimination & Exhaustive Search** , or **Brute Force**\nGuessing method needs you to write down the candidate values for blank\/empty squares. Usually very hard Sudoku puzzles need to be solved using basic, advanced solving sudoku methods, and guessing method.\n\n### Our solver applies methods in the following order:\n- OneChoice\n- Row-Elimination, Column-Elimination, Box-Elimination\n- Subset2Row, Subset2Col, Subset2Box\n- SubsetPosition2Row, SubsetPosition2Col, SubsetPosition2Box\n- Interaction-RowBox, Interaction-ColBox, Interaction-BoxRow, Interaction-BoxCol\n- Subset3Row, Subset3Col, Subset3Box, SubsetPosition3Row\n- SubsetPosition3Col, SubsetPosition3Box\n- Subset4Row, Subset4Col, Subset4Box\n- SubsetPosition4Row, SubsetPosition4Col, SubsetPosition4Box\n- DoubleRowsOneDigitCheck(X-Wing), DoubleColsOneDigitCheck(X-Wing)\n- TripleRowsOneDigitCheck, TripleColsOneDigitCheck\n- QuadrRowsOneDigitCheck, QuadrColsOneDigitCheck\n- XY-Wing-RowBox, XY-Wing-ColBox, XY-Wing-RowCol\n- XYZ-Wing- RowBox, XYZ-Wing-RowBox\n- ConflictElimination, Exhaustive Search\n\n##### [Solving Sudoku Methods Explained](https:\/\/www.createclassicsudoku.com\/SolvingSudokuMethods.jsp)\nThis article answers questions: What are commonly used solving sudoku methods? What solving Sudoku methods do we use? In what sequences?\n\nLast updated on Feb 17, 2020\n\n##### [Basic Solving Sudoku Method: One Choice](https:\/\/www.createclassicsudoku.com\/solvesudoku_onechoice.jsp)\na.k.a Sole Candidate, Only Candidate, or Naked Single\n\nLast updated on Feb 17, 2020.\n\n##### [Basic Solving Sudoku Method: Elimination](https:\/\/www.createclassicsudoku.com\/solvesudoku_elimination.jsp)\na.k.a Hidden Single, Loner\n\nLast updated on Feb 17, 2020.\n\n##### [Advanced Solving Sudoku Method: Subset2](https:\/\/www.createclassicsudoku.com\/solvesudoku_subset2.jsp)\na.k.a Pair, Naked Pair, or Naked Twins\n\nLast updated on Feb 17, 2020.\n\n##### [Advanced Solving Sudoku Method: SubsetPosition2](https:\/\/www.createclassicsudoku.com\/solvesudoku_subsetposition2.jsp)\na.k.a Hidden Pair or Hidden Twins\n\nLast updated 3 mins ago\n\nLast updated on Feb 17, 2020.\n\n##### [Advanced Solving Sudoku Method: Interaction](https:\/\/www.createclassicsudoku.com\/solvesudoku_interaction.jsp)\na.k.a Box\/Row Claim or Intersection , or Locked Candidates\n\nLast updated on Feb 17, 2020.\n\n##### [Advanced Solving Sudoku Method: X-Wing](https:\/\/www.createclassicsudoku.com\/solvesudoku_xwing.jsp)\nLast updated on Feb 17, 2020.\n\n##### [Advanced Solving Sudoku Method: XY-Wing](https:\/\/www.createclassicsudoku.com\/solvesudoku_xywing.jsp)\nLast updated on Feb 17, 2020.\n\n##### [Advanced Solving Sudoku Method: Guessing](https:\/\/www.createclassicsudoku.com\/solvesudoku_guessing.jsp)\nLast updated on Feb 17, 2020.\n\n##### [Solving Sudoku Methods Explained](https:\/\/www.createclassicsudoku.com\/SolvingSudokuMethods.jsp)\nThis article answers questions: What are commonly used solving sudoku methods? What solving Sudoku methods do we use? In what sequences?\n\nLast updated on Feb 17, 2020\n\n##### Resources\n- [Amazon Book: Create Classic Sudoku](https:\/\/www.amazon.com\/dp\/0996204202)\n- [Partial Book in HTML format](https:\/\/www.createclassicsudoku.com\/FreeEbookCreateSudoku-YZ-Shortver\/index.html)\n- [Write A Sudoku Post](https:\/\/www.createclassicsudoku.com\/posts.jsp)\n- [Solving Sudoku Methods](https:\/\/www.createclassicsudoku.com\/SolvingSudokuMethods.jsp)\n- [Privacy Policy](https:\/\/www.createclassicsudoku.com\/privacypolicy.html)\n- [Contact Us]()\n***\n##### Any Sudoku\n- [Make 16×16 Sudoku](https:\/\/www.createclassicsudoku.com\/MakeYourOwnSudoku16by16.jsp)\n- [Make 4×4 Sudoku](https:\/\/www.createclassicsudoku.com\/MakeYourOwnSudoku4by4.jsp)\n- [Make 3×3 Sudoku](https:\/\/www.createclassicsudoku.com\/MakeYourOwnSudoku4by4.jsp)\n- [Make 2×2 Sudoku](https:\/\/www.createclassicsudoku.com\/MakeYourOwnSudoku4by4.jsp)\n- [Download Empty Sudokus](https:\/\/www.createclassicsudoku.com\/blankgrid.jsp)\n\n##### 9×9 Sudoku\n- [Play Sudoku](https:\/\/www.createclassicsudoku.com\/index.jsp)\n- [Solve Sudoku](https:\/\/www.createclassicsudoku.com\/SolveYourOwnSudoku9by9.jsp)\n- [Make Sudoku Your Way](https:\/\/www.createclassicsudoku.com\/MakeYourOwnSudoku9by9.jsp)\n- [Make Sudoku Our Way](https:\/\/www.createclassicsudoku.com\/MakeYourOwnSudoku9by9FillRemove.jsp)\n- [Make A Sudoku Book](https:\/\/www.createclassicsudoku.com\/MakeASudokuBook.jsp)\n\n© Copyright:  [www.createclassicsudoku.com](https:\/\/www.createclassicsudoku.com\/)","attrs_readable_markdown":"A number game (Sudoku) is a puzzle in which missing numbers are to be filled into a 9 by 9 grid of squares which are subdivided into 3 by 3 boxes so that every row, every column, and every box contains the numbers 1 through 9.\n\nMethods to solve Sudoku puzzles (or Create Sudoku puzzles) include but not limited to:\n\n### Basic Solving Sudoku Methods\n###### [One-Choice](https:\/\/www.createclassicsudoku.com\/solvesudoku_onechoice.jsp)   a.k.a Sole Candidate , or Only Candidate , or Naked Single .\n###### [Elimination](https:\/\/www.createclassicsudoku.com\/solvesudoku_elimination.jsp)  a.k.a Hidden Single , or Loner .\nBasic solving sudoku methods do not need you to write down the candidate values for empty squares. Usually very easy or easy Sudoku puzzles can be solved by using basic solving methods.\n\n### Advanced Solving Sudoku Methods\n###### [Subset2](https:\/\/www.createclassicsudoku.com\/solvesudoku_subset2.jsp) a.k.a Pair or Naked Pair , or Naked Twins .\n###### [SubsetPosition2](https:\/\/www.createclassicsudoku.com\/solvesudoku_subsetposition2.jsp) a.k.a Hidden Pair or Hidden Twins\n###### [Interaction](https:\/\/www.createclassicsudoku.com\/solvesudoku_interaction.jsp) a.k.a Box\/Row Claim or Intersection , or Locked Candidates .\n###### [X-Wing](https:\/\/www.createclassicsudoku.com\/solvesudoku_xwing.jsp)\n###### [XY-Wing](https:\/\/www.createclassicsudoku.com\/solvesudoku_xywing.jsp)\n###### [XYZ-Wing](https:\/\/www.createclassicsudoku.com\/solvesudoku_xyzwing.jsp)\nAdvanced solving sudoku methods need you to write down the candidate values for blank\/empty squares. Usually medium, hard, and very hard Sudoku puzzles need to be solved using both basic and advanced solving sudoku methods.\n\n### Solve Sudoku - Last Resort\n###### [Guessing](https:\/\/www.createclassicsudoku.com\/solvesudoku_guessing.jsp) or Exhaustive Search\n###### a.k.a. **Guess-and-check, nishio**  (Japanese name), or **ConflictElimination & Exhaustive Search** , or **Brute Force**\nGuessing method needs you to write down the candidate values for blank\/empty squares. Usually very hard Sudoku puzzles need to be solved using basic, advanced solving sudoku methods, and guessing method.\n\n### Our solver applies methods in the following order:\n- OneChoice\n- Row-Elimination, Column-Elimination, Box-Elimination\n- Subset2Row, Subset2Col, Subset2Box\n- SubsetPosition2Row, SubsetPosition2Col, SubsetPosition2Box\n- Interaction-RowBox, Interaction-ColBox, Interaction-BoxRow, Interaction-BoxCol\n- Subset3Row, Subset3Col, Subset3Box, SubsetPosition3Row\n- SubsetPosition3Col, SubsetPosition3Box\n- Subset4Row, Subset4Col, Subset4Box\n- SubsetPosition4Row, SubsetPosition4Col, SubsetPosition4Box\n- DoubleRowsOneDigitCheck(X-Wing), DoubleColsOneDigitCheck(X-Wing)\n- TripleRowsOneDigitCheck, TripleColsOneDigitCheck\n- QuadrRowsOneDigitCheck, QuadrColsOneDigitCheck\n- XY-Wing-RowBox, XY-Wing-ColBox, XY-Wing-RowCol\n- XYZ-Wing- RowBox, XYZ-Wing-RowBox\n- ConflictElimination, Exhaustive Search\n\n##### [Solving Sudoku Methods Explained](https:\/\/www.createclassicsudoku.com\/SolvingSudokuMethods.jsp)\nThis article answers questions: What are commonly used solving sudoku methods? What solving Sudoku methods do we use? In what sequences?\n\n##### [Solving Sudoku Methods Explained](https:\/\/www.createclassicsudoku.com\/SolvingSudokuMethods.jsp)\nThis article answers questions: What are commonly used solving sudoku methods? What solving Sudoku methods do we use? In what sequences?","meta_canonical":null,"ml_categories_json":"{\"\/Games\":832,\"\/Games\/Puzzles_and_Brainteasers\":819,\"\/Hobbies_and_Leisure\":111,\"\/Hobbies_and_Leisure\/Other\":104}","ml_types_json":"{\"\/Article\":993,\"\/Article\/Tutorial_or_Guide\":811}","ml_intent_types_json":"{\"Informational\":999}","meta_language":null,"attrs_author":null,"attrs_publish_time":0,"attrs_original_publish_time":1511019606,"attrs_is_republished":0,"attrs_nr_words":"971","attrs_boilerpipe_nr_words":"341","body_ext_links_number":1,"body_int_links_number":27,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":0,"src_redirect":"","download_time_msec":89,"download_ttfb_msec":73,"download_size":52362}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

3 days 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`	0.1 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://www.createclassicsudoku.com/SolvingSudokuMethods.jsp

Last Crawled

2026-04-21 08:36:12 (3 days ago)

First Indexed

2017-11-18 15:40:06 (8 years ago)

HTTP Status Code

200

Content

Meta Title

Solving Sudoku Puzzles Methods Explained, Summary of Sudoku Solving Methods

Meta Description

Solving Sudoku Methods Explained. One-Choice, Sole Candidate, Only Candidate, Naked Single; Hidden Single, Elimination, Loner; Subset, Pair, Naked Pair, Naked Twins; SubsetPosition, Hidden Pair, Hidden Twins; Interaction, Box/Row Claim, Intersection, Locked Candidates, X-Wing, XY-Wing, Guessing, Exhaustive Search.

Meta Canonical

null

Boilerpipe Text

A number game (Sudoku) is a puzzle in which missing numbers are to be filled into a 9 by 9 grid of squares which are subdivided into 3 by 3 boxes so that every row, every column, and every box contains the numbers 1 through 9. Methods to solve Sudoku puzzles (or Create Sudoku puzzles) include but not limited to: Basic Solving Sudoku Methods One-Choice a.k.a Sole Candidate , or Only Candidate , or Naked Single . Elimination a.k.a Hidden Single , or Loner . Basic solving sudoku methods do not need you to write down the candidate values for empty squares. Usually very easy or easy Sudoku puzzles can be solved by using basic solving methods. Advanced Solving Sudoku Methods Subset2 a.k.a Pair or Naked Pair , or Naked Twins . SubsetPosition2 a.k.a Hidden Pair or Hidden Twins Interaction a.k.a Box/Row Claim or Intersection , or Locked Candidates . X-Wing XY-Wing XYZ-Wing Advanced solving sudoku methods need you to write down the candidate values for blank/empty squares. Usually medium, hard, and very hard Sudoku puzzles need to be solved using both basic and advanced solving sudoku methods. Solve Sudoku - Last Resort Guessing or Exhaustive Search a.k.a. Guess-and-check, nishio (Japanese name), or ConflictElimination & Exhaustive Search , or Brute Force Guessing method needs you to write down the candidate values for blank/empty squares. Usually very hard Sudoku puzzles need to be solved using basic, advanced solving sudoku methods, and guessing method. Our solver applies methods in the following order: OneChoice Row-Elimination, Column-Elimination, Box-Elimination Subset2Row, Subset2Col, Subset2Box SubsetPosition2Row, SubsetPosition2Col, SubsetPosition2Box Interaction-RowBox, Interaction-ColBox, Interaction-BoxRow, Interaction-BoxCol Subset3Row, Subset3Col, Subset3Box, SubsetPosition3Row SubsetPosition3Col, SubsetPosition3Box Subset4Row, Subset4Col, Subset4Box SubsetPosition4Row, SubsetPosition4Col, SubsetPosition4Box DoubleRowsOneDigitCheck(X-Wing), DoubleColsOneDigitCheck(X-Wing) TripleRowsOneDigitCheck, TripleColsOneDigitCheck QuadrRowsOneDigitCheck, QuadrColsOneDigitCheck XY-Wing-RowBox, XY-Wing-ColBox, XY-Wing-RowCol XYZ-Wing- RowBox, XYZ-Wing-RowBox ConflictElimination, Exhaustive Search Solving Sudoku Methods Explained This article answers questions: What are commonly used solving sudoku methods? What solving Sudoku methods do we use? In what sequences? Solving Sudoku Methods Explained This article answers questions: What are commonly used solving sudoku methods? What solving Sudoku methods do we use? In what sequences?

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# Chat Hello, my name is Alex and I am your assistant. What is your name? **Message** Send Close Chat × Network Error. Please Try Again\! ##### Hint × Close ##### Detailed Hint × Close ##### Sudoku Creation Steps × Close ##### Are you sure you want to clear the whole sudoku grid? × Cancel Yes, Clear the Grid ##### Share This Sudoku × Share the link Close ##### Share This Sudoku × Share the link Close ##### Contact Us × Cancel Submit ##### Please Subscribe to continue to use this service!!\! × You have used our services a lot. [Please subscribe to have unlimited services.](https://www.createclassicsudoku.com/subscription.jsp) Subscribe Close ##### Please Renew Your Subscription to continue to use this service!!\! × Your subscription has expired. 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Please Re-Log In (or Sign Up) to use this service. × Close ##### Please Log In (or Sign Up) first before subscribing Sudoku services\! × Close ##### Log In × Close Submit ##### Forgot Password? × Close Submit ##### Change Password × Close Submit ##### Sign Up Form × Close Submit ##### Change Password Form × Close Submit ##### DELETE Saved Sudokus × Close ##### In Development × Close [Sudoku]("Fill numbers 1 to 9 to every empty square so that each row, column, or box contains numbers 1 to 9.") - [MakeSudoku](https://www.createclassicsudoku.com/SolvingSudokuMethods.jsp) [Make Sudoku Your Way](https://www.createclassicsudoku.com/MakeYourOwnSudoku9by9.jsp) [Make Sudoku Our Way](https://www.createclassicsudoku.com/MakeYourOwnSudoku9by9FillRemove.jsp) [Make 16x16 Sudoku](https://www.createclassicsudoku.com/MakeYourOwnSudoku16by16.jsp) [Make Simple Sudoku](https://www.createclassicsudoku.com/MakeYourOwnSudoku4by4.jsp) [Make a Sudoku Book](https://www.createclassicsudoku.com/MakeASudokuBook.jsp) - [SolveSudoku](https://www.createclassicsudoku.com/SolveYourOwnSudoku9by9.jsp) - [PlaySudoku](https://www.createclassicsudoku.com/index.jsp) - [SudokuPosts](https://www.createclassicsudoku.com/posts.jsp) - [Resources](https://www.createclassicsudoku.com/SolvingSudokuMethods.jsp) [Customize and Download Empty Grids](https://www.createclassicsudoku.com/blankgrid.jsp) [Solving Sudoku Explained](https://www.createclassicsudoku.com/SolvingSudokuMethods.jsp) [Book @ Amazon](https://www.amazon.com/dp/0996204202) [Book (partial) in HTML pages](https://www.createclassicsudoku.com/FreeEbookCreateSudoku-YZ-Shortver/index.html) [Help Center](https://www.createclassicsudoku.com/onepage/helpcenter.jsp) [FAQ](https://www.createclassicsudoku.com/FAQ.jsp) [About Us](https://www.createclassicsudoku.com/about-us.jsp) - [Subscribe](https://www.createclassicsudoku.com/subscription.jsp "Please log in before subscribing") - [Sign Up]() - [Login]() - [User](https://www.createclassicsudoku.com/SolvingSudokuMethods.jsp) [Change Password]() [Manage Saved Sudokus]() [Manage Posted Sudokus]() [Delete My Account](https://www.createclassicsudoku.com/deleteMyAccount.jsp) - [Logout]() # Solving Sudoku Methods Explained A number game (Sudoku) is a puzzle in which missing numbers are to be filled into a 9 by 9 grid of squares which are subdivided into 3 by 3 boxes so that every row, every column, and every box contains the numbers 1 through 9. Methods to solve Sudoku puzzles (or Create Sudoku puzzles) include but not limited to: ### Basic Solving Sudoku Methods ###### [One-Choice](https://www.createclassicsudoku.com/solvesudoku_onechoice.jsp) a.k.a Sole Candidate , or Only Candidate , or Naked Single . ###### [Elimination](https://www.createclassicsudoku.com/solvesudoku_elimination.jsp) a.k.a Hidden Single , or Loner . Basic solving sudoku methods do not need you to write down the candidate values for empty squares. Usually very easy or easy Sudoku puzzles can be solved by using basic solving methods. ### Advanced Solving Sudoku Methods ###### [Subset2](https://www.createclassicsudoku.com/solvesudoku_subset2.jsp) a.k.a Pair or Naked Pair , or Naked Twins . ###### [SubsetPosition2](https://www.createclassicsudoku.com/solvesudoku_subsetposition2.jsp) a.k.a Hidden Pair or Hidden Twins ###### [Interaction](https://www.createclassicsudoku.com/solvesudoku_interaction.jsp) a.k.a Box/Row Claim or Intersection , or Locked Candidates . ###### [X-Wing](https://www.createclassicsudoku.com/solvesudoku_xwing.jsp) ###### [XY-Wing](https://www.createclassicsudoku.com/solvesudoku_xywing.jsp) ###### [XYZ-Wing](https://www.createclassicsudoku.com/solvesudoku_xyzwing.jsp) Advanced solving sudoku methods need you to write down the candidate values for blank/empty squares. Usually medium, hard, and very hard Sudoku puzzles need to be solved using both basic and advanced solving sudoku methods. ### Solve Sudoku - Last Resort ###### [Guessing](https://www.createclassicsudoku.com/solvesudoku_guessing.jsp) or Exhaustive Search ###### a.k.a. **Guess-and-check, nishio** (Japanese name), or **ConflictElimination & Exhaustive Search** , or **Brute Force** Guessing method needs you to write down the candidate values for blank/empty squares. Usually very hard Sudoku puzzles need to be solved using basic, advanced solving sudoku methods, and guessing method. ### Our solver applies methods in the following order: - OneChoice - Row-Elimination, Column-Elimination, Box-Elimination - Subset2Row, Subset2Col, Subset2Box - SubsetPosition2Row, SubsetPosition2Col, SubsetPosition2Box - Interaction-RowBox, Interaction-ColBox, Interaction-BoxRow, Interaction-BoxCol - Subset3Row, Subset3Col, Subset3Box, SubsetPosition3Row - SubsetPosition3Col, SubsetPosition3Box - Subset4Row, Subset4Col, Subset4Box - SubsetPosition4Row, SubsetPosition4Col, SubsetPosition4Box - DoubleRowsOneDigitCheck(X-Wing), DoubleColsOneDigitCheck(X-Wing) - TripleRowsOneDigitCheck, TripleColsOneDigitCheck - QuadrRowsOneDigitCheck, QuadrColsOneDigitCheck - XY-Wing-RowBox, XY-Wing-ColBox, XY-Wing-RowCol - XYZ-Wing- RowBox, XYZ-Wing-RowBox - ConflictElimination, Exhaustive Search ##### [Solving Sudoku Methods Explained](https://www.createclassicsudoku.com/SolvingSudokuMethods.jsp) This article answers questions: What are commonly used solving sudoku methods? What solving Sudoku methods do we use? In what sequences? Last updated on Feb 17, 2020 ##### [Basic Solving Sudoku Method: One Choice](https://www.createclassicsudoku.com/solvesudoku_onechoice.jsp) a.k.a Sole Candidate, Only Candidate, or Naked Single Last updated on Feb 17, 2020. ##### [Basic Solving Sudoku Method: Elimination](https://www.createclassicsudoku.com/solvesudoku_elimination.jsp) a.k.a Hidden Single, Loner Last updated on Feb 17, 2020. ##### [Advanced Solving Sudoku Method: Subset2](https://www.createclassicsudoku.com/solvesudoku_subset2.jsp) a.k.a Pair, Naked Pair, or Naked Twins Last updated on Feb 17, 2020. ##### [Advanced Solving Sudoku Method: SubsetPosition2](https://www.createclassicsudoku.com/solvesudoku_subsetposition2.jsp) a.k.a Hidden Pair or Hidden Twins Last updated 3 mins ago Last updated on Feb 17, 2020. ##### [Advanced Solving Sudoku Method: Interaction](https://www.createclassicsudoku.com/solvesudoku_interaction.jsp) a.k.a Box/Row Claim or Intersection , or Locked Candidates Last updated on Feb 17, 2020. ##### [Advanced Solving Sudoku Method: X-Wing](https://www.createclassicsudoku.com/solvesudoku_xwing.jsp) Last updated on Feb 17, 2020. ##### [Advanced Solving Sudoku Method: XY-Wing](https://www.createclassicsudoku.com/solvesudoku_xywing.jsp) Last updated on Feb 17, 2020. ##### [Advanced Solving Sudoku Method: Guessing](https://www.createclassicsudoku.com/solvesudoku_guessing.jsp) Last updated on Feb 17, 2020. ##### [Solving Sudoku Methods Explained](https://www.createclassicsudoku.com/SolvingSudokuMethods.jsp) This article answers questions: What are commonly used solving sudoku methods? What solving Sudoku methods do we use? In what sequences? Last updated on Feb 17, 2020 ##### Resources - [Amazon Book: Create Classic Sudoku](https://www.amazon.com/dp/0996204202) - [Partial Book in HTML format](https://www.createclassicsudoku.com/FreeEbookCreateSudoku-YZ-Shortver/index.html) - [Write A Sudoku Post](https://www.createclassicsudoku.com/posts.jsp) - [Solving Sudoku Methods](https://www.createclassicsudoku.com/SolvingSudokuMethods.jsp) - [Privacy Policy](https://www.createclassicsudoku.com/privacypolicy.html) - [Contact Us]() *** ##### Any Sudoku - [Make 16×16 Sudoku](https://www.createclassicsudoku.com/MakeYourOwnSudoku16by16.jsp) - [Make 4×4 Sudoku](https://www.createclassicsudoku.com/MakeYourOwnSudoku4by4.jsp) - [Make 3×3 Sudoku](https://www.createclassicsudoku.com/MakeYourOwnSudoku4by4.jsp) - [Make 2×2 Sudoku](https://www.createclassicsudoku.com/MakeYourOwnSudoku4by4.jsp) - [Download Empty Sudokus](https://www.createclassicsudoku.com/blankgrid.jsp) ##### 9×9 Sudoku - [Play Sudoku](https://www.createclassicsudoku.com/index.jsp) - [Solve Sudoku](https://www.createclassicsudoku.com/SolveYourOwnSudoku9by9.jsp) - [Make Sudoku Your Way](https://www.createclassicsudoku.com/MakeYourOwnSudoku9by9.jsp) - [Make Sudoku Our Way](https://www.createclassicsudoku.com/MakeYourOwnSudoku9by9FillRemove.jsp) - [Make A Sudoku Book](https://www.createclassicsudoku.com/MakeASudokuBook.jsp) © Copyright: [www.createclassicsudoku.com](https://www.createclassicsudoku.com/)

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A number game (Sudoku) is a puzzle in which missing numbers are to be filled into a 9 by 9 grid of squares which are subdivided into 3 by 3 boxes so that every row, every column, and every box contains the numbers 1 through 9. Methods to solve Sudoku puzzles (or Create Sudoku puzzles) include but not limited to: ### Basic Solving Sudoku Methods ###### [One-Choice](https://www.createclassicsudoku.com/solvesudoku_onechoice.jsp) a.k.a Sole Candidate , or Only Candidate , or Naked Single . ###### [Elimination](https://www.createclassicsudoku.com/solvesudoku_elimination.jsp) a.k.a Hidden Single , or Loner . Basic solving sudoku methods do not need you to write down the candidate values for empty squares. Usually very easy or easy Sudoku puzzles can be solved by using basic solving methods. ### Advanced Solving Sudoku Methods ###### [Subset2](https://www.createclassicsudoku.com/solvesudoku_subset2.jsp) a.k.a Pair or Naked Pair , or Naked Twins . ###### [SubsetPosition2](https://www.createclassicsudoku.com/solvesudoku_subsetposition2.jsp) a.k.a Hidden Pair or Hidden Twins ###### [Interaction](https://www.createclassicsudoku.com/solvesudoku_interaction.jsp) a.k.a Box/Row Claim or Intersection , or Locked Candidates . ###### [X-Wing](https://www.createclassicsudoku.com/solvesudoku_xwing.jsp) ###### [XY-Wing](https://www.createclassicsudoku.com/solvesudoku_xywing.jsp) ###### [XYZ-Wing](https://www.createclassicsudoku.com/solvesudoku_xyzwing.jsp) Advanced solving sudoku methods need you to write down the candidate values for blank/empty squares. Usually medium, hard, and very hard Sudoku puzzles need to be solved using both basic and advanced solving sudoku methods. ### Solve Sudoku - Last Resort ###### [Guessing](https://www.createclassicsudoku.com/solvesudoku_guessing.jsp) or Exhaustive Search ###### a.k.a. **Guess-and-check, nishio** (Japanese name), or **ConflictElimination & Exhaustive Search** , or **Brute Force** Guessing method needs you to write down the candidate values for blank/empty squares. Usually very hard Sudoku puzzles need to be solved using basic, advanced solving sudoku methods, and guessing method. ### Our solver applies methods in the following order: - OneChoice - Row-Elimination, Column-Elimination, Box-Elimination - Subset2Row, Subset2Col, Subset2Box - SubsetPosition2Row, SubsetPosition2Col, SubsetPosition2Box - Interaction-RowBox, Interaction-ColBox, Interaction-BoxRow, Interaction-BoxCol - Subset3Row, Subset3Col, Subset3Box, SubsetPosition3Row - SubsetPosition3Col, SubsetPosition3Box - Subset4Row, Subset4Col, Subset4Box - SubsetPosition4Row, SubsetPosition4Col, SubsetPosition4Box - DoubleRowsOneDigitCheck(X-Wing), DoubleColsOneDigitCheck(X-Wing) - TripleRowsOneDigitCheck, TripleColsOneDigitCheck - QuadrRowsOneDigitCheck, QuadrColsOneDigitCheck - XY-Wing-RowBox, XY-Wing-ColBox, XY-Wing-RowCol - XYZ-Wing- RowBox, XYZ-Wing-RowBox - ConflictElimination, Exhaustive Search ##### [Solving Sudoku Methods Explained](https://www.createclassicsudoku.com/SolvingSudokuMethods.jsp) This article answers questions: What are commonly used solving sudoku methods? What solving Sudoku methods do we use? In what sequences? ##### [Solving Sudoku Methods Explained](https://www.createclassicsudoku.com/SolvingSudokuMethods.jsp) This article answers questions: What are commonly used solving sudoku methods? What solving Sudoku methods do we use? In what sequences?

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