there secret base Potatoland potato mash accord special recipe the neighbour Porridgia decide seize recipe sell Pilauland for mission prepare special agent Pearlo year when finally Pearlo learn secret espionage penetrate Potatoland territory reach secret basenow stand entrance inside need pass combination lock Minute ago worker enter password terminal open door the terminal square digital keyboard 33 digit 1 9Pearlo know password consist distinct digit probably symmetric respect central button terminal he heat sensor allow detect digit worker press now want check password enter worker symmetric respect central button terminal this fact help Pearlo reduce number different possible password combination