{"id":698,"date":"2025-12-18T17:03:54","date_gmt":"2025-12-18T04:03:54","guid":{"rendered":"https:\/\/thesudoku.com\/blog\/?page_id=698"},"modified":"2026-08-20T16:48:13","modified_gmt":"2026-08-20T04:48:13","slug":"unique-rectangle-type-4","status":"publish","type":"page","link":"https:\/\/thesudoku.com\/blog\/unique-rectangle-type-4\/","title":{"rendered":"Unique Rectangle Type 4"},"content":{"rendered":"\n
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< <\/a>Back<\/a><\/p>\n<\/div>\n\n\n\n

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How to Master Unique Rectangle Type 4 in Sudoku<\/strong><\/h1>\n\n\n\n

When extra candidates fill two corners of a rectangle, you don’t always need to track those extra numbers. The Unique Rectangle Type 4 technique<\/strong> flips the script: instead of focusing on the extra digits, it analyzes the strong links of the base digits themselves across the unit.<\/p>\n\n\n\n

This Unique Rectangle technique takes other candidates within the unit into account.<\/p>\n\n\n\n

Identifying Unique Rectangle Type 4<\/strong><\/h2>\n\n\n\n

Look for four cells forming a rectangle across two 3×3 blocks, two rows, and two columns:<\/p>\n\n\n\n

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\"Unique<\/figure>\n\n\n\n
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