I was just thinking about how most if not all competitions that are valued for mathematics are in-person and require a school to do it (e.g. BMO)
Are there any other competitions that could be well valued that are similar, such as those in cryptography?
Notably, most mathematical competitions would be impossible to do from home due to the cheating aspect, which is why I ask to any of the same level that are similar.
Just sort of piqued my interest and I thought I'd ask haha, interested for any inputs.