Rubik's cube.
The New York times has a very challenging crossword puzzle. I also enjoy the one out of the Star-Tribune in Minneapolis. USA Today has a great and challenging daily crossword puzzle. The Seattle Times and the New York Times also have challenging crossword puzzles.
You can make Desktop's very easy. but a laptop is much more complex you need all the parts to fit together like a puzzle.
it is something very simple called "starch"
The Japanese Puzzle Box (also known to be called the secret box) is a box that can only be opened by doing very complex series of moves. Some can have the simplest moves to where others require a ton of steps in order to open the box. The puzzle box originated in Hakone in the 19th century.They believed that if the box was open that it usually contained a symbol of good luck.
Saturday is the day in which the 'New York Times' produces the hardest puzzle of the week, which is very challenging. I do not know what else I may add.
Synonyms:not simple or it's very challenging Antonyms:easy or very simple or not challenging
A highly complex culture is known as a civilization. For ex. Greece and Rome were civilizations because both were very complex during early years.
The Nintendo DS has many games for the adults that are very challenging and interesting. A couple of the puzzle video games for adults that play the Nintendo DS are: Mystery Case File, Professor Layton and the Curious Village, Big Kahuna Reef and the Word Jong.
A lateral is the correct answer (if your doing the crossword puzzle I find to be very popular)
Very challenging or unsolvable
the Stage itself . this is a platform from which to mount equipment and to Perform on . this can be a simple platform or a very complex arrangement of complex machinery
complex basically means very complicated. Ex: The structure of the machinery was very complex.