Deep knowledge guide. Never think too much about fountain stage since my avg time usually 1-2mins. I usually solve the puzzle based on my experience and memory. Start with the old way 4W then 4S then check. If the unknown is either 3 or 4 i reset the code to get them 0,1 or 2 unknown (since getting food always anoying even my partners all reached master lvl, they can solo collect 4 food in less than 2 mins) It always goes like this Check 2 times with S and M to see if the code has 0/1/2 unknown (if 3 or 4 →reset) Collecting 2W done and drop to check Collecting 2F done and drop to check Got a sub 14mins trio when i come back doing it recently, hope I break it someday.