Struct OnlyCellStrategy

pub struct OnlyCellStrategy;

A Strategy which detects situations in which a digit can only go in one cell of a group.

As a visualization, the cell marked with X in the following example is the only one in its block that can be a 2 (using classic Sudoku rules).

╔═══╤═══╦═══╤═══╗
║   │   ║   │ 2 ║
╟───┼───╫───┼───╢
║ X │ 1 ║   │   ║
╠═══╪═══╬═══╪═══╣
║   │   ║   │   ║
╟───┼───╫───┼───╢
║   │   ║   │   ║
╚═══╧═══╩═══╧═══╝

Trait Implementations

impl Clone for OnlyCellStrategy

fn clone(&self) -> OnlyCellStrategy

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Strategy for OnlyCellStrategy

fn apply(&self, sudoku_info: &mut SudokuInfo<impl Constraint + Clone>) -> bool

Applies this strategy to the given Sudoku. The strategy may rely on and modify the information in the given sudoku_info. This instance is given to other strategies that participate in the solution and/or future iterations of the same strategy. It can thus be used to communicate insights.