A solver for the math problem presented at http://mathforum.org/yeargames
This exhaustively searches (with some simple pruning) for equations using only the digits 2, 0, 1 and 9 which generate integral answers between 1 and 100.
It is configured to build using bazel, using "bazel build -c opt 2019". Or you use your favorite build environment.
This is far from optimized. It needs about 11GB of RAM to complete, and the code does some pretty stupid things. I was optimizing for my time, not yours. ;-)
When I run it, it finds solutions for all values from 1 to 100, generating a total of 6526951 equations.