Rooted: Created page with "The '''Reverse BUG Lite''' is a generalization of the Reverse BUG solving technique. It can be stated as follows: : In solving a sudoku with a Uniqueness Controv..."

2025-07-19T04:16:22Z

Created page with "The '''Reverse BUG Lite''' is a generalization of the Reverse BUG solving technique. It can be stated as follows: : In solving a sudoku with a Uniqueness Controv..."

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The '''Reverse BUG Lite''' is a generalization of the [[Reverse BUG]] [[solving technique]]. It can be stated as follows:
: In solving a [[sudoku]] with a [[Uniqueness Controversy|unique]] solution, it is not possible to have two [[row]]s or [[column]]s partially filled so that all filled digits together form an [[unavoidable set]].

The reason is because the unfilled [[cell]]s in these two rows or columns also form an [[unavoidable set]].

== Example ==

If rows 1 and 2 look like this:

1 . . | 2 . . | 3 . .
3 . . | 1 . . | . . .

Then R2C7 <> 2.

== Reference ==

* [http://www.sudoku.com/boards/viewtopic.php?t=4957 ''Reverse BUG-lite'' at Sudoku Players' forums].

== See Also ==

* [[BUG]]
* [[Reverse BUG]]

[[Category:Uniqueness]]
[[Category:Solving Techniques]]

Reverse BUG Lite - Revision history

Rooted: Created page with "The '''Reverse BUG Lite''' is a generalization of the Reverse BUG solving technique. It can be stated as follows: : In solving a sudoku with a Uniqueness Controv..."