{"id":686,"date":"2025-12-18T16:53:25","date_gmt":"2025-12-18T03:53:25","guid":{"rendered":"https:\/\/thesudoku.com\/blog\/?page_id=686"},"modified":"2026-01-28T12:32:23","modified_gmt":"2026-01-27T23:32:23","slug":"unique-rectangle-type-2","status":"publish","type":"page","link":"https:\/\/thesudoku.com\/blog\/unique-rectangle-type-2\/","title":{"rendered":"Unique Rectangle Type 2"},"content":{"rendered":"\n
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< <\/a>Back<\/a><\/p>\n<\/div>\n\n\n\n

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Unique Rectangle Type 2<\/p>\n\n\n\n

In this case, we have two pure bi-value cells and two three-value cells sharing the same extra candidate, 2. So we are looking at Unique Rectangle Type 2<\/p>\n\n\n\n

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  1. Take a look at this example. One of the three-value cells must contain 2. Otherwise, if none of these cells contain 2, we get a \u201cdeadly pattern,\u201d because the puzzle would have more than one valid solution for this grid configuration. In that case, each of the highlighted cells could take the values 6 and 9 in two different ways.<\/li>\n<\/ol>\n\n\n\n
    \"Unique<\/figure>\n<\/div>\n\n\n\n
    \n
    \n\n\n\n
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    1. So we can safely eliminate 2 from any cell that can see both of these cells at the same time<\/li>\n<\/ol>\n\n\n\n
      \"Unique<\/figure>\n<\/div>\n<\/div>\n\n\n\n
      \n\n\n\n
      \n

      < <\/a>Unique Rectangle Type 1<\/a><\/p>\n\n\n\n

      Unique Rectangle Type 3><\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n

      <\/p>\n","protected":false},"excerpt":{"rendered":"

      < Back Unique Rectangle Type 2 In this case, we have two pure bi-value cells and two three-value cells sharing the same extra candidate, 2. So we are looking at Unique Rectangle Type 2 < Unique Rectangle Type 1 Unique Rectangle Type 3><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-no-title","meta":{"footnotes":""},"categories":[116],"tags":[],"class_list":["post-686","page","type-page","status-publish","hentry","category-master-techniques"],"yoast_head":"\nUnique Rectangle Type 2 - TheSudoku.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thesudoku.com\/blog\/unique-rectangle-type-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Unique Rectangle Type 2 - TheSudoku.com\" \/>\n<meta property=\"og:description\" content=\"< Back Unique Rectangle Type 2 In this case, we have two pure bi-value cells and two three-value cells sharing the same extra candidate, 2. 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