The TPR(0,5a) has started today and will finish next September 8th. This time there is a single hole, players are to write a translator of arithmetic expressions from infix notation to RPN.
I am a referee again this month, I am amazed at the ways golfers are solving the problem. Golf forces people to be really creative (ab)using the language. At the top of the leaderboard there is Stephen Turner right now with 126 strokes, I like his approach very much.