{"id":2582,"date":"2011-03-05T04:31:07","date_gmt":"2011-03-05T12:31:07","guid":{"rendered":"http:\/\/www.generalknowledgetoday.com\/?p=2582"},"modified":"2011-03-05T04:31:07","modified_gmt":"2011-03-05T12:31:07","slug":"sudoku-what-is-a-sudoku","status":"publish","type":"post","link":"https:\/\/generalknowledgetoday.com\/?p=2582","title":{"rendered":"Sudoku-What is a Sudoku?"},"content":{"rendered":"<p><strong>Sudoku<\/strong> is a logic-based,\u00a0 combinatorial number-placement puzzle. The objective is to fill a 9\u00d79 grid with digits so that each column, each row, and each of the nine 3\u00d73 sub-grids that compose the grid (also called &#8220;boxes&#8221;, &#8220;blocks&#8221;, &#8220;regions&#8221;, or &#8220;sub-squares&#8221;) contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which typically has a unique solution.<\/p>\n<p>Completed puzzles are always a type of Latin square with an additional constraint on the contents of individual regions. For example, the same single integer may not appear twice in the same 9&#215;9 playing board row or column or in any of the nine 3&#215;3 subregions of the 9&#215;9 playing board.<\/p>\n<div style=\"float: left; margin: 1px; width: 152px;\">\n<div><a title=\"Hypersudoku puzzle\" href=\"http:\/\/en.wikipedia.org\/wiki\/File:Oceans_Hypersudoku18_Puzzle.svg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/1\/12\/Oceans_Hypersudoku18_Puzzle.svg\/150px-Oceans_Hypersudoku18_Puzzle.svg.png\" alt=\"A Sudoku puzzle grid  with four blue qudrants and nine rows and nine columns that intersect  at square spaces. Some of the spaces are pre-filled with one number  each; others are blank spaces for a solver to fill with a number.\" width=\"150\" height=\"150\" \/><\/a><\/div>\n<div style=\"clear: left;\"><strong>sudoku<\/strong> <strong>puzzle<\/strong><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Sudoku is a logic-based,\u00a0 combinatorial number-placement puzzle. The objective is to fill a 9\u00d79 grid with digits so that each column, each row, and each of the nine 3\u00d73 sub-grids &hellip; <a href=\"https:\/\/generalknowledgetoday.com\/?p=2582\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[231],"tags":[7932,7933,7934,7935,2176,4612,7936,7937,7938,7939],"class_list":["post-2582","post","type-post","status-publish","format-standard","hentry","category-do-you-know","tag-free-sudoku","tag-hypersudoku","tag-hypersudoku-puzzle","tag-play-sudoku-free","tag-puzzle","tag-puzzles","tag-sudoku","tag-sudoku-online","tag-sudoku-puzzle","tag-what-is-a-sudoku","entry"],"_links":{"self":[{"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=\/wp\/v2\/posts\/2582","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2582"}],"version-history":[{"count":0,"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=\/wp\/v2\/posts\/2582\/revisions"}],"wp:attachment":[{"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}