I'm enjoying this game. I like trying to solve the puzzles on my own, but at least twice when I've run into a problem, I've not been able to find the solution for the puzzle in the handy manual. The most recent time was the circuit board puzzle in the moving city. I can't think how else to solve the problem (number of holes x number of sockets + 200 - 7 = 677) but when I go to 677 there's no puzzle hints. That's only the most recent occasion. I've already solved the circuit board puzzle myself, just wondering what's going on with the handy manual, or if I'm missing something.