For a large portal (VNUnet), PZZL.com developed
five types of puzzles with the size of a button (150 x 150 pixels).
Every day of the week featured a different type. Daily refreshment
of new puzzles was fully automated. Click 'start' first...
the logo by clicking 4 times
the letters to make five words
the numbers above to make 100 in both fields below
the letters to get a-e in each row, column and diagonal