This IQ game will put kids’ brains into high gear as it challenges them to fit all the gears on the board to make the big wheels spin! Along the way, children will build concentration, boost logic, practice problem solving—and more! Set includes a compact game board with a transparent lid, 7 puzzle pieces with gears, and a guide with 120 challenges and solutions, from easy to expert; board measures 10" x 5 1/2".