Continuous
From Sudopedia, the Free Sudoku Reference Guide
Jump to navigationJump to searchA loop is continuous when it fully complies with the rules defined for that loop. A continuous loop has alternating weak and strong links all the way round. Candidates can then be eliminated outside the loop, but within the unit of the links with weak inference.
The following image illustrates the concept:
This loop has 2 simple rules:
- Each red link must be followed by a blue link.
- Each blue link must be followed by a red link.
When we close the loop at node A, we can see that these rules are obeyed by the complete loop. Therefore, this is a continuous loop.