60 Triangle Puzzle Card Game Boards for Triangle Puzzle Playing Cards: This book was developed to facilitate the use of the Triangle Puzzle Card deck (60 cards, which may be made from Google doc or bought at Make Playing Cards online). A book to facilitate the use of puzzles on Triangle Puzzle Card deck (60 cards). A set of Triangle Puzzle pieces is necessary to complete the puzzles (may be made using cardboard or bought at Amazon.com online). The card puzzles vary in difficulty levels (groups of 15 cards for each of the four levels).