A wonderful intellectual toy for spare time palying. It can add of fun to their lives and simply relaxing after stressed working hours. You must use logical thinking skills in your challenges and use reasoning and induction principles to solve problems. Find a way to move the mini-tower to the next column with the least number of steps. Features - - Material: wood. - Size: 19.00X6.00X7.30cm/7.47X2.36X2.87in - Find a way to move the mini-tower to the next column with the least number of steps. - The game could help improve both you and your kids intellectual development of creativity, imagination and so on. - material with smooth surface design, no thorn, safe and for use. - Creative gaming tools, exploring your talents, simply relaxing after stressed working hours. - Intelligent puzzle toy. for kids ages over 6 years old. Package list: 1 x hanoi of tower puzzle