Another one I had some fun with: write a FRACTRAN->brainfuck compiler! https://codegolf.stackexchange.com/questions/5210/convert-fractran-into-brainfuck https:

Another one I had some fun with: write a FRACTRAN->brainfuck compiler! https://codegolf.stackexchange.com/questions/5210/convert-fractran-into-brainfuck https://codegolf.stackexchange.com/questions/5210/convert-fr... My solution was nowhere near competitive but I sure had fun with it.