The train puzzle makes no sense its literally a pair of scissors under cardboard yet Quinten is apparently too stupid to realise he can lift up the box or grab the scissors from underneath the cardboard.
Either way no ones gonna think that a tool to complete the puzzle in Petersons house would be somewhere else in the neighbourhood and Quentin wont just enter some kids treehouse without reason, Its like those old fangames where a key to access parts of the neighbours house would just be in a drawer in your own house.
Anyway change this because this is very stupid puzzle.