We all know what a ring doughnut looks like. Technically it is a Toroid, but the ring doughnut is so ubiquitous that toroids are described as doughnut-shaped rather than the other way round.
Regardless of how you describe it, the challenge this week is to cut a doughnut into as many pieces as possible using only three straight cuts. The pieces do not have to be the same size or the same shape; you just have to get as many as you can.
How many pieces can you produce?
No matter how many times you twist and turn the doughnut, the largest number of pieces that you can get with three straight cuts is nine. One of the ways of achieving this is illustrated below.
Did you work it out?