Yes, and this does indeed mean that their results may be of practical importance.
At the same time, it's pretty well known that the kind of problem instances arising in practice and in those challenges are not hard instances. In other words, this also means that their result is extremely unlikely to be relevant for the P=?NP question.
At the same time, it's pretty well known that the kind of problem instances arising in practice and in those challenges are not hard instances. In other words, this also means that their result is extremely unlikely to be relevant for the P=?NP question.