Thirty minutes ago, Round 1 of the International Physics Online Olympiad finished. We had several submissions from all over the world: from Boston to Chicago to India to Saudi Arabia to Russia to the Czech Republic to elsewhere, everybody had a go at it! Results will take a while, as there are several submissions to grade. However, in the meanwhile, you should discuss problems on our AoPS forums or here. Note that, in the span of the next few days, I will also be posting some of the Round 1 problems as Brilliant problems.