2old2randr

Interestingly, given the right conditions, chain reactions can take place with very little effort. There is one known example of a natural nuclear reactor that was in operation for a few hundred thousand years (2 billion years ago). https://en.wikipedia.org/wiki/Natural_nuclear_fission_reacto...

I have a Lisp solution to this that I wrote some years ago when I was going through Project Euler problems. https://github.com/2old2randr/Euler/blob/master/monopoly.lis...