From Ross Mxt
I am a retired secondary teacher of mathematics and computing. I live in New Zealand. I enjoy puzzles of which "Fantasic Contraption" must rate one of the best.
I add the code "MXT" to all of my published solutions. My aim is to not only solve each problem but also to produce an elegant or minimalist successful design.
It is possible to "cheat" by viewing others' solutions but I try not to do so. Only twice have had to resort to seeking such help.