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What Is A Unique Rectangle In Sudoku? [Solved]
Unique Rectangle Type 1 This strategy applies when the player finds four cells with the same pair of candidates facing each other. They are grouped in parallel sets of two, sharing the same columns, rows, and blocks. This is a deadly pattern that results in a double solution for the puzzle.
Unique Rectangles Part 1 / Sudoku Tutorial #20
Explanation of the very common
Sudoku Tutorial #21-A / Unique Rectangles Review
A Complete Review of Tutorials #20 & #21, featuring many additional examples of UR’s Type 1 thru 7. UR’s are one of the most …
Sudoku. Tutorial #21 Danger Danger!! (unique rectangle)
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