Rooted: Created page with "Within the context of Sudoku, a '''pattern''' can be: * A recognizable structure in the remaining candidates for a single digit. * A template that represents o..."

2020-06-04T03:38:27Z

Created page with "Within the context of Sudoku, a '''pattern''' can be: * A recognizable structure in the remaining candidates for a single digit. * A template that represents o..."

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Within the context of [[Sudoku]], a '''pattern''' can be:
* A recognizable structure in the remaining [[candidate]]s for a single [[digit]].
* A [[template]] that represents one possible configuration for all instances of a single digit.
* A set of [[cell]]s that can be recognized by predefined characteristics. ([[subset]], [[ALS]])

Players often make a distinction between pattern-based [[solving technique]]s and [[chain]]s or [[loop]]s. However, recent developments in solving techniques have resulted in several advanced solving techniques where patterns are embedded as nodes in chains.
== Pattern-based Solving techniques ==
* [[Locked Candidates]]
* [[Subset]]s
* [[Fish]]
* [[Skyscraper]]
* [[2-String Kite]]
* [[Empty Rectangle]]
* [[XY-Wing]]
* [[Uniqueness Test]]
* [[BUG]]
Note that a single [[ALS]] is a pattern, but not a solving technique. The techniques that use ALS either require more than one or use them in chains.
== See Also ==
* [[Pattern Overlay Method]]

Pattern - Revision history

Rooted: Created page with "Within the context of Sudoku, a '''pattern''' can be: * A recognizable structure in the remaining candidates for a single digit. * A template that represents o..."