I am taking the Euclid contest and I have to say, from what I've seen the last two numbers or so tend to be impossibly hard. I've looked at a few solutions and I will tell myself "I would have never thought of that in a million years." Anyway, this thread is for people taking the contest. Any suggestion for practice? I have purchased Problems Problems Problems vol 3 from Waterloo's website, but aside of that, I don't have much.