What kind of puzzles the players expected here, and that's only !, already clearly seen in the pictures so here. As someone wrote: There is only one solution to connect all fields in line with each other. The impasse is usually quickly identified where the line will end. However, it very quickly becomes very difficult. It must be a smart four-year-old who is mentioned in another review ;-) tinkering until it fits, is also not a good idea because mistakes are punished with deduction of points (which I personally highscores are matter, the main thing, the mystery has been solved) , One should therefore plan everything in my head and so trains spatial awareness and logical thinking. Those who think of hard work, is not entirely wrong. The app asks a lot more than other games (also I needed soon first a break, but I will come back). Those who want to engage in it, the are recommended but these inexpensive, graphically and technically flawless mystery. (Incidentally, I see three star quite as a good evaluation, even if it "critical" appear under the heading. 5 stars I forgive only when I am absolutely thrilled, and for four it is not enough for my very subjective feeling. This but is purely a matter of taste and not a criticism of the game.)