{"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":"2026-08-20T16:47:17","modified_gmt":"2026-08-20T04:47:17","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
\n
\n

< <\/a>Back<\/a><\/p>\n<\/div>\n\n\n\n

\n

How to Master Unique Rectangle Type 2 in Sudoku<\/strong><\/h1>\n\n\n\n

Building on the primary logic of avoiding unresolvable grids, the Unique Rectangle Type 2 technique<\/strong> handles situations where an extra candidate leaks into two corners of a rectangle instead of just one. By leveraging the uniqueness principle of Sudoku, you can turn this potential trap into a powerful elimination tool.<\/p>\n\n\n\n

Identifying Unique Rectangle Type 2<\/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

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

Take a look at this example:<\/p>\n\n\n\n

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