Struct sudokugen::solver::generator::Puzzle

pub struct Puzzle { /* fields omitted */ }

This structure represents a generated board and its solution

This struct can only be created by calling the generate function, which will create a random board with a unique solution.

Implementations

impl Puzzle

pub fn generate(board_size: BoardSize) -> Puzzle

Generate a new sudoku puzzle with a unique solution.

The generate function creates a random board with a unique solution. It does this by “solving” the empty board using random guesses whenever it cannot find the correct solution. Once the empty board is solved, it iterates over each of the guesses and removes it if that guess is the only valid option for that cell.

use sudokugen::{Puzzle, BoardSize};

let puzzle = Puzzle::generate(BoardSize::NineByNine);

println!("{}", puzzle.board());
println!("{}", puzzle.solution());

pub fn board(&self) -> &Board

Returns the minimal board generated

use sudokugen::{Puzzle, BoardSize};

let gen = Puzzle::generate(BoardSize::NineByNine);
println!("{}", gen.board());

pub fn solution(&self) -> &Board

Returns the solution for the generated board

use sudokugen::{Puzzle, BoardSize};

let gen = Puzzle::generate(BoardSize::NineByNine);
println!("{}", gen.solution());

pub fn is_solution_unique(&self) -> bool

Verify that the solution for the generated board is unique.

use sudokugen::{Puzzle, BoardSize};

let gen = Puzzle::generate(BoardSize::NineByNine);
assert!(gen.is_solution_unique());