Description of Rätsel
A riddle is a task that must be solved by thought. Puzzles can serve the pastime of entertainment and education of the puzzle solver. Your solution is partly hampered by misleading, ambiguous information. Difficult to be solved puzzles will redensartlich also known as nut to crack head or nut because they are a nut similar to "hard to crack". Occasionally puzzles are made that have no solution. The aim of such puzzles, it is usually to fool the raters.
A riddle contest, in which mainly the knowledge counts, was mainly the quiz. With the Internet and many, sometimes very difficult online puzzles that often the answers on the Web must be retrieved emerged. The type of tasks is quite different. Solutions are available on the Web often the term "cheat".