Hey! Just browsing LR forum posts and saw no one responded to this. I wrote an explanation here: https://7sage.com/discussion/#/discussion/26042/pt-1-s3-q18-please-help
... been mixed. For example, on PT41, I had to guess 6 ... may have to do with PT41 having the last LG puzzle ... work? Just looked at the PT41 and this game seems unsual.