Sudoku

Sudoku is a program for solving sudoku, written in Coffeescript.

Installation

$ npm install -g sudoku-coffee

Usage

$ sudoku
Usage: sudoku <filename> or sudoku <gen> [diffculty] [symmetric|shuffled]

Solving

To run the file use the binary sudoku filename. The file should have a row with 9 chars per file and 9 rows.

$ cat test/fixtures/easy.sudoku
51.....83
8..416..5
.........
.985.461.
...9.1...
.642.357.
.........
6..157..4
78.....96

$ sudoku test/fixtures/easy.sudoku
Solving board
51.....83
8..416..5
.........
.985.461.
...9.1...
.642.357.
.........
6..157..4
78.....96

Solution
516729483
873416925
942835761
398574612
257961348
164283579
431698257
629157834
785342196
Difficulty: 0

Generating

To generate a new sudoku, run sudoku generate and it will generate a new sudoku.

$ sudoku generate
2..7.9.4.
.8...4.67
.4.2.....
7....54..
.5....9.6
...9.35.8
8.5..7..1
...318...
.7...28..

Development

$ git clone https://github.com/andersjanmyr/sudoku.git
$ cd sudoku
$ npm install

Test

# Run all tests
$ npm test

# Watch files and run tests when files change
$ npm run watch

Running

Five different files are preconfigured to be run with npm run, easy, medium, hard, samurai, and impossible. The files can be found in test/fixtures.

$ npm run samurai

> [email protected] samurai /home/CORPUSERS/23053085/tmp/sudoku
> bin/sudoku test/fixtures/samurai.sudoku

Solving board
5.....1.7
..43..5..
...2...8.
...2...8.
.9.4.2...
4.......6
...1.3.5.
.8...4...
3.9.....1

Solution
528946137
914387562
673215489
165239784
897462315
435711296
246173958
781654923
359828641
Difficulty: 13