There is a lot of money involved. So I presume there is cheating involved, similar to doping. Also the cheating schemes are hard to understand sometimes. Here

There is a lot of money involved. So I presume there is cheating involved, similar to doping. Also the cheating schemes are hard to understand sometimes. Here is an example: https://en.wikipedia.org/wiki/Edge_sorting https://en.wikipedia.org/wiki/Edge_sorting