7 Rings Towers Of Hanoi. The discs are so heavy and precious that there are 2 holy rules. The first is that only one disc can be moved at a time. The second rule is that at no time can a large disc be place on a smaller one, but you can place any disc anywhere as long as the bottom one is larger. When the monks had finished their work of moving the whole tower from its starting place to its destination, at that very moment, the tower collapses and turns to dust and the world will cease to exist. Start by moving only one disc at a time and remember that at no time can a large disc be placed on top of a smaller one. This beautiful handmade version comes with a high quality wood box to store the parts for safekeeping. There are many interesting ways to complete this challenge and once you figure it out you can consider yourself an expert mathematician! The difficulty level depends on the number of rings used. This version features 9 rings, if you want to try your hand at another level try our 7 Ring Towers of Hanoi!