A crossword is made of a rectangle of adaptable size. Most of rectangle elements are blank and have to be filled up with alphabetic letters. These letters make words defined by the rest elements showing hints. Words can be written either horizontally or vertically next to the blocks defining them. Few of words or word phrases remains undefined and are supposed to be guessed according to words crossing them from the other direction. Undefined phrases are signed as Secret phrases.
Crosswords is a computer game for solving crosswords. Once it is generated, you can fill up all the missing letters to get the desired secret phrase(s). A game is finished when the secret phrase is found or better when all letters are filled up successfully.