This entry uses pe/tron for "stone" in the phrase of the headword rather than li/qon, used originally in the metaphor for moving the decisive playing-piece in the game of pessoi. See pi 223; cf. pi 1384, with notes on this game.
The source of this story of the search for Mardonius' treasure by one Polycrates (here an Athenian; in the shorter version in pi 223 a Theban) in 479 BC is unidentifiable.
[1] This final sentence has nothing to do with this headword. It is a compression of the two unrelated entries in Photius (Lexicon pi165 and pi166 Theodoridis) immediately preceding his entry "to move every stone". The first Photius entry runs, "To shake every rope: a proverb in reference to those who feel complete enthusiasm; it is derived from those loosening the fitments" (probably tied ropes on a ship, see note on pi 221, but cf. the metaphor from a horse's reins at Plato, Protagoras 338E). The Suda text here omits the definition of the proverb and has kinou/ntwn in the sense of setting in motion things that have been fixed or tied, where other entries have xalw/ntwn.