Overall I liked  this and I even liked how half clunky the explanation was - that had an authentic flavour of locked room puzzles. But I wish the clues had been more evenly distributed and - and maybe this isn’t a bad thing - you think about the whole thing for one moment and it’s ridiculous! If the writing had been a little richer, it would have been much more evocative and atmospheric. And times it, in  good and bad ways, reminded me of a point and click computer game.