It makes sense, if @Etar is right in his calculation, that is at least 6 x 42U racks that suck some 80-90 kWh. Probably somebody that
already has some kind of business (industrial warehouse, proper power supply, etc) that makes good money, so all the expenses from the puzzle operation could be offset against company income and reduce taxes. No need to even touch the puzzle money.

BTW, congrats on the win! Well done.