Over 1700 codewords.A codeword puzzle is similar to a crossword puzzle, but it doesn't have any clues. The letters used in each codeword are assigned a number, and the aim of the puzzle is for you to work out which numbers correspond to which letters of the alphabet.Each codeword puzzle has three given letters, to get you started.If you get stuck, the app does provide for revealing a single letter, or revealing the entire puzzle, or checking to see if your answers are correct.If you find any bugs, please report them on the Facebook page, so that they can get fixed - http://www.facebook.com/Crosswords