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/

                                                   2014-08-03                                          QQWING(1)