One of the world's greatest brainteaser puzzles</br>The object is simple?? get the ring off of the puzzle</br>Not quite so easy</br>Three hint cards help you get to the "ha" sensation of solving a great brainteaser</br>Learning skills:  logic?? deductive reasoning?? abstract thinking?? spatial relationships</br></br>Product Description</br></br>The object is simple - get the ring off of the puzzle. The solution? Not quite so easy. Includes hints and a solution in case you get stuck.</br><br/>http://www.amazon.com/gp/product/B000GHX1NAm