I don’t know why people sort after easiest ways of making wealth
It is most times filled with regrets and disappointment and you need to avoid been phished
More importantly, trade wisely
You can look up dascoin if it ease your difficulties
Solving such a puzzle will definitely not be one of the easiest ways to make wealth and it also won't lead to them getting phished. Did you even read the OP?
People will be doing this because it is something that interests them and the monetary incentive will just be an added bonus. There have been many such things in the past, in fact I believe there is still a bitcoin one with much funds locked away in it that has never been solved.