About the book: year / Alternative Earth. Sometimes, in order to make a Great Discovery, it is enough to know that the impossible is possible. It was this clue that the scientists of the civilization took advantage of, whose invasion was interrupted by the magicians of the Zasechnik community. Yes, the next attempt to invade Earth can be interrupted using an already tested algorithm. But this will be of little use: the Korkhs have learned to open transitions between worlds, are able to borrow technologies from more developed civilizations, and have already rebuilt their industry on a military scale...