Kira

A (killer) sudoku solver.

Requirements

Installation

gem install kira

Usage

kira [options]

Options

Option	Meaning
`-h`, `--help`	Show help message and exit.
`-V`, `--version`	Output version information and exit.
`--pretty[=<format>]`	Pretty-print the result in a given format, where `<format>` can be `ascii` or `box`. When `ascii` argument is given, then `\	`,`-`, and`+`ASCII characters will be used to create the grid. The`box`argument tells`kira`to use Unicode box-drawing characters for grid generation. When`=`is omitted, it defaults to`ascii`.
`--color`	Colorize the output.

Input syntax

The kira‘s input consists of an optional grid of cell values and any number
(including zero) of equations. The grid consists of values from 1 to 9 and dots
representing empty cells. If present, the grid should have a length of 81.
An equation consists of one or more 2-dimensional coordinates of cells,
separated by the + sign, followed by the = sign and an integer. Each
coordinate consists of zero-based row and column numbers separated by a comma
and surrounded with parentheses. Whitespace characters are generally ignored,
but each equation needs to be on its own line.

To finish entering the input, type Ctrl-D on GNU/Linux or
Ctrl-Z followed by Enter on Windows.

Example

$ kira
64.......
7........
....7941.
.........
.........
21.......
4........
.........
......834
(2,0)+(3,0)+(3,1)=17
(1,1)+(2,1)=8
(0,2)+(0,3)+(1,2)+(1,3)+(1,4)=25
(2,2)+(2,3)=8
(0,4)+(0,5)+(1,5)=8
(0,6)+(0,7)+(0,8)=12
(1,6)+(1,7)=17
(1,8)+(2,8)=11
(4,0)+(4,1)=14
(3,2)+(4,2)+(5,2)=19
(3,3)+(3,4)+(3,5)+(3,6)=15
(4,3)+(4,4)=9
(5,3)+(5,4)+(5,5)+(5,6)=22
(4,5)+(4,6)=10
(3,7)+(3,8)+(4,7)+(4,8)+(5,7)+(5,8)=34
(7,0)+(8,0)+(8,1)=17
(6,1)+(7,1)=10
(6,2)+(6,3)=12
(7,2)+(7,3)+(7,4)+(8,2)+(8,3)=27
(6,4)+(6,5)+(6,6)+(6,7)=26
(7,5)+(8,4)+(8,5)=9
(7,6)+(7,7)=7
(6,8)+(7,8)=8
6 4 9 8 1 5 2 7 3 
7 5 1 3 4 2 9 8 6 
8 3 2 6 7 9 4 1 5 
3 6 8 2 5 7 1 4 9 
5 9 4 1 8 3 7 6 2 
2 1 7 9 6 4 3 5 8 
4 2 5 7 3 8 6 9 1 
1 8 3 4 9 6 5 2 7 
9 7 6 5 2 1 8 3 4

License

MIT