The Crowns mechanic doesn't make sense to me. The rules say if you turn over a Crown and it has the correct suit, you would return the Ace for that suit - but you can only search for unclaimed suits. Therefore the scenario can't happen. Furthermore, even if this could happen, you're being penalized for guessing the correct suit, which goes against the idea of a memory game.
Circle Search / Discussion
This is the discussion related to the wiki page Circle Search.