+ Chess
      + Piece
        + Bishop.pm
        + King.pm
        + Knight.pm
        + Pawn.pm
      + Board.pm
      + Piece.pm
      + Square.pm
    + Tests
      + Bishop.pl
      + King.pl
      + Knight.pl
      + Pawn.pl
      + Square.pl
  
##</code><code>##

BEGIN {
    push @INC, "path/to/directory/of/chess-square";
}

use Chess::Square;

##</code><code>##

use lib "path/to/directory/of/chess-square";
use Chess::Square;

##</code><code>##

use Chess::Square;
use strict;

my $square = Chess::Square->new();