In this brain-bending puzzle game, your goal is to place the stacking pieces on the board following a set of placement rules - such as how many pieces of each color you must use and where a color must be placed relative to another color. With 200 challenges in four difficulty levels and a compact case, this game provides hours of puzzle-solving fun, virtually anywhere. Play solo, or pass the game around to challenge your family and friends. Put your logical thinking skills to the test! Can you master all of the challenges?