QQWING

NAME

qqwing − A tool for generating and solving Sudoku puzzles

SYNOPSIS

qqwing −−generate [OPTIONS...]
qqwing −−solve [OPTIONS...]

DESCRIPTION

qqwing is a Sudoku puzzle generator and solver. It offers the following features:
• Fast. It can solve 1000 puzzles in 1 second and generate 1000 puzzles
in 25 seconds.
• Uses logic. Uses as many solve techniques as possible when solving
puzzles rather than guessing.
• Rates puzzles. Most generators don’t give an indication of the
difficulty of a Sudoku puzzle. QQwing does.
• Can print solve instructions. Tells steps that need to be taken to
solve any puzzle.
• Customizable output style, including a CSV style that is easy to
import into a database.

OPTIONS

−−generate <num>

Generate new puzzles

−−solve

Solve all the puzzles from standard input

−−difficulty

Generate only simple, easy, intermediate, expert, or any

−−symmetry <sym>

Symmetry: none, rotate90, rotate180, mirror, flip, or random

−−puzzle

Print the puzzle (default when generating)

−−nopuzzle

Do not print the puzzle (default when solving)

−−solution

Print the solution (default when solving)

−−nosolution

Do not print the solution (default when generating)

−−stats

Print statistics about moves used to solve the puzzle

−−nostats

Do not print statistics (default)

−−timer

Print time to generate or solve each puzzle

−−notimer

Do not print solve or generation times (default)

−−count−solutions

Count the number of solutions to puzzles

−−nocount−solutions

Do not count the number of solutions (default)

−−history

Print trial and error used when solving

−−nohistory

Do not print trial and error to solve (default)

−−instructions

Print the steps (at least 81) needed to solve the puzzle

−−noinstructions

Do not print steps to solve (default)

−−log−history

Print trial and error to solve as it happens

−−nolog−history

Do not print trial and error to solve as it happens

−−one−line

Print puzzles on one line of 81 characters

−−compact

Print puzzles on 9 lines of 9 characters

−−readable

Print puzzles in human readable form (default)

−−csv

Output CSV format with one line puzzles

−h, −−help

Display help message

−−about

Display author and license information

−−version

Display version number

SEE ALSO

http://qqwing.com/