go-sudoku
An implementation of Sudoku generators and solvers in GoLang.
Usage
Help
$ ./go-sudoku --help
go-sudoku: A GoLang based Sudoku generator and solver.
Usage: go-sudoku [flags] <action>
Actions:
--------
* generate: Generate a Sudoku Grid and apply the specified difficulty on it
* solve: Solve a Sudoku puzzle provided in a text (CSV) file
Examples:
---------
* ./go-sudoku
* ./go-sudoku -algorithm back-tracking -theme green -seed 42 generate
* ./go-sudoku -format csv generate
* ./go-sudoku -input puzzle.csv solve
* ./go-sudoku -difficulty hard -format csv generate | ./go-sudoku solve
Optional Flags:
---------------
-algorithm string
Algorithm (back-tracking/brute-force) (default "back-tracking")
-debug
Enable Debug Logging?
-difficulty string
Difficulty (none/easy/medium/hard/insane) (default "medium")
-format string
Rendering Format (csv/table) (default "table")
-help
Display this usage and help text
-input string
File containing a Sudoku Puzzle in CSV format
-no-color
Disable colors in rendering? [$NO_COLOR]
-pattern string
Pattern to use instead of Difficulty (diamond/octagon/square/star/target/triangle)
-progress
Show progress in real-time with an artificial delay?
-seed int
RNG Seed (0 => random number based on time) [$SEED]
-theme string
Table formatting theme (none/blue/cyan/green/magenta/red/yellow) (default "none")
-type string
Sudoku Type (default/jigsaw/samurai) (default "default")
Generator
Note: all the commands below were run with SEED=42 to keep the results reproducible.
$ ./go-sudoku generate
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ 8 5 │ 6 │ 2 1 ┃
┃ 7 │ 9 2 │ ┃
┃ 6 3 │ 5 1 │ 4 ┃
┃ ─────────┼─────────┼───────── ┃
┃ 2 │ 8 │ 6 7 ┃
┃ │ 2 │ 9 ┃
┃ 5 │ 3 9 │ ┃
┃ ─────────┼─────────┼───────── ┃
┃ 1 2 8 │ 6 │ 9 5 ┃
┃ 3 7 4 │ 2 9 │ ┃
┃ 5 │ 1 7 │ ┃
┣━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┫
┃ Medium [42] ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
## custom difficulty
$ ./go-sudoku -difficulty insane generate
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ 8 │ 6 │ 2 ┃
┃ │ │ ┃
┃ │ │ ┃
┃ ─────────┼─────────┼───────── ┃
┃ 2 │ 8 │ 7 ┃
┃ │ 2 │ ┃
┃ │ 9 │ ┃
┃ ─────────┼─────────┼───────── ┃
┃ 8 │ │ 5 ┃
┃ 3 4 │ │ ┃
┃ │ 1 │ ┃
┣━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┫
┃ Insane [42] ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
## custom pattern
$ ./go-sudoku -pattern diamond generate
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ │ 6 │ ┃
┃ │ 9 2 3 │ ┃
┃ 2 │ 8 1 │ 7 ┃
┃ ─────────┼─────────┼───────── ┃
┃ 4 9 │ │ 6 7 ┃
┃ 8 6 │ │ 1 9 ┃
┃ 5 1 │ │ 4 2 ┃
┃ ─────────┼─────────┼───────── ┃
┃ 8 │ 3 6 │ 9 ┃
┃ │ 2 9 5 │ ┃
┃ │ 8 │ ┃
┣━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┫
┃ Diamond [42] ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
## samurai sudoku
$ ./go-sudoku -type samurai generate
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ 1 │ 2 8 │ 5 6 │ │ 4 8 │ 2 1 │ ┃
┃ 5 │ │ │ │ 9 │ 8 4 7 │ 6 3 ┃
┃ 6 │ 5 │ 2 │ │ 1 │ 9 │ 8 ┃
┃ ─────────┼─────────┼─────────┤ ├─────────┼─────────┼───────── ┃
┃ 4 │ 8 5 │ 3 6 9 │ │ 8 │ │ 6 ┃
┃ │ 3 │ 2 4 │ │ 4 6 │ 2 │ 9 ┃
┃ 2 5 3 │ 9 │ 7 8 │ │ 9 │ │ 8 ┃
┃ ─────────┼─────────┼─────────┼─────────┼─────────┼─────────┼───────── ┃
┃ 3 7 │ 4 6 │ 9 5 │ 7 6 │ 3 1 │ 7 6 │ 4 5 ┃
┃ 6 2 │ │ 1 │ 9 2 │ │ 3 │ 1 2 ┃
┃ 4 5 │ │ 2 │ │ │ 5 2 │ 8 6 ┃
┃ ─────────┴─────────┼─────────┼─────────┼─────────┼─────────┴───────── ┃
┃ │ │ 7 3 │ ┃
┃ │ │ 4 2 │ 5 │ ┃
┃ │ 7 │ 3 9 │ 2 8 │ ┃
┃ ─────────┬─────────┼─────────┼─────────┼─────────┼─────────┬───────── ┃
┃ 7 6 │ 5 9 │ 8 │ 3 4 │ 9 5 │ 1 4 │ 3 ┃
┃ 2 5 │ 6 │ 7 │ 2 9 │ 1 │ 3 2 │ 5 ┃
┃ 4 1 │ │ 5 9 │ 1 8 7 │ 3 2 │ 5 7 6 │ 8 1 ┃
┃ ─────────┼─────────┼─────────┼─────────┼─────────┼─────────┼───────── ┃
┃ 1 │ 3 4 │ 5 │ │ 7 9 │ 4 6 │ 2 3 ┃
┃ │ 7 │ 4 3 2 │ │ 2 │ 1 │ ┃
┃ 3 2 │ │ 7 │ │ 6 3 4 │ 2 │ 1 ┃
┃ ─────────┼─────────┼─────────┤ ├─────────┼─────────┼───────── ┃
┃ 6 7 │ 4 3 9 │ │ │ │ 7 │ 1 ┃
┃ 4 │ 1 │ 7 8 │ │ 4 │ 8 3 │ 6 ┃
┃ 2 │ 7 │ 4 │ │ 2 │ 1 │ 3 ┃
┣━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┫
┃ Samurai Medium [42] ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
Solver
Note: all the commands below were run with SEED=42 to keep the results reproducible.
## generate a new puzzle and feed it to the solver to solve
$ ./go-sudoku -format csv generate | ./go-sudoku solve
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ INPUT ┃ OUTPUT ┃
┣━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┫
┃ 8 5 │ 6 │ 2 1 ┃ 9 8 5 │ 7 6 4 │ 2 3 1 ┃
┃ 7 │ 9 2 │ ┃ 4 1 7 │ 9 2 3 │ 8 6 5 ┃
┃ 6 3 │ 5 1 │ 4 ┃ 6 3 2 │ 8 5 1 │ 7 9 4 ┃
┃ ─────────┼─────────┼───────── ┃ ─────────┼─────────┼───────── ┃
┃ 2 │ 8 │ 6 7 ┃ 2 4 9 │ 5 1 8 │ 6 7 3 ┃
┃ │ 2 │ 9 ┃ 8 6 3 │ 4 7 2 │ 5 1 9 ┃
┃ 5 │ 3 9 │ ┃ 7 5 1 │ 6 3 9 │ 4 2 8 ┃
┃ ─────────┼─────────┼───────── ┃ ─────────┼─────────┼───────── ┃
┃ 1 2 8 │ 6 │ 9 5 ┃ 1 2 8 │ 3 4 6 │ 9 5 7 ┃
┃ 3 7 4 │ 2 9 │ ┃ 3 7 4 │ 2 9 5 │ 1 8 6 ┃
┃ 5 │ 1 7 │ ┃ 5 9 6 │ 1 8 7 │ 3 4 2 ┃
┣━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┫
┃ 45 blocks to solve ┃ 3621 cycles ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┻━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
