Sudoku

Package sudoku contains the solver for the well known and ubiquitous Sudoku game. The sudoku package is just a library that can be used by anyone. Based on this fact, there is not an executable part of this repository.

When the Sudoku Board is created there are many ways how to fill clues (the original values before the user input any other guesses). A clue can be set by a single value, row, column or entirely whole board at once.

Sudoku can be solved by calling the method Solve on created Sudoku instance. Moreover, the whole sudoku can be printed in any state, because implements the Stringer interface

Installation

go get github.com/lukasaron/sudoku

Example of basic usage

package main

import (
    "fmt"
    "github.com/lukasaron/sudoku"
    "log"
)

func main() {
    game := sudoku.NewBoard().SetBoard([][]int{
        {0, 0, 0, 0, 0, 0, 1, 4, 8},
        {0, 1, 0, 0, 2, 6, 0, 0, 3},
        {0, 0, 0, 0, 1, 0, 6, 0, 0},
        {0, 0, 0, 0, 0, 0, 9, 0, 2},
        {1, 0, 0, 3, 6, 2, 0, 0, 7},
        {5, 0, 7, 0, 0, 0, 0, 0, 0},
        {0, 0, 5, 0, 3, 0, 0, 0, 0},
        {3, 0, 0, 1, 9, 0, 0, 7, 0},
        {4, 7, 0, 0, 0, 0, 0, 0, 0},
    })

    err := game.Error()
    if err != nil {
        log.Fatal(err)
    }

    game.Solve()
    fmt.Println(game)
}