NAME

Discipulus15puzzle.pl

SYNOPSIS

perl Discipulus15puzzle.pl [ --verbose --nocolor --charsize n --positions n n ..]

OPTIONS

 -v|verbose
               print to the screen the appearence of the board
               and the solvability/difficulty of the game based
               on the calculated and shown parity of permutations
               
 -n|nocolor
              high contrast colors instead of default ones
              default colors are imperial red and gold
              
 -c|charsize  number
              the size used for numbers on tiles
              
 -tiles|positions  sequence of numbers from 1 to 16
              providing a correct sequence of numbers from 1 (the tile with
              the 1 on it) to 16 (the empty tile) you can force the game
              to show a particular initial disposition
              This is unavailable while --extreme is used
              
 -x|extreme|perl
              instead of numbers, perl statements are shown
              the victory condition is shown briefly then the board is
              shuffled: good luck monks

DESCRIPTION

This classic puzzle game is dedicated to my 15th anniversary of presence at the perlmonks community (see http://www.perlmonks.org/?node_id=1192660).

If run without arguments nor switches it displays a shuffled board with, in the above part, a description of the diffuculty and solvability of the current game.

Not every disposition can lead to a victorious game: this is due to permutations parity. Games with odd permutations are impossible.

You can shuffle the board using CTRL-S sequence.

To play just click on the tile you want to move.

Winners are rewarded with a surprise.

Have fun!

REFERENCES

See about 15 puzzle at OEIS https://oeis.org/A087725

mathworld http://mathworld.wolfram.com/15Puzzle.html

Info in italian http://utenti.quipo.it/base5/jsgioco15/g15did.htm

Reference and support site for this program, if needed, http://www.perlmonks.org

AUTHOR

Discipulus as found at www.perlmonks.org