Rick Bleeker Kroef
Easy has the round tracker start at 3, and you remove two clue cards of a suit joined by the dotted line in the diagram in the rulebook (so you are playing with 5 suits)
Advanced uses the standard round tracker, and also removes 2 clue cards so that you are playing with 5 suits, but the suit removed is clockwise from the Dark Lady.
While they both use 5 suits, the clue composition is changed so that you should require less clues for the easy version, and more clues for the advanced version (as far as I am aware).
ah... so if i'm not mistaken the suit removed in the advanced version is not connected through a dotted line or is it the first one in clockwise order connected with this dotted line?
If it is the later then I played at advance difficulty and if this not the case then I played easy with a normal round tracker making it a not mentioned (bonus)"less easy / almost normal" difficulty setting that sits betweeen easy and normal difficulty.
Also note that the movement sequences effect the difficulty as well. The basic ones on the top of the cards are easier to track than the ones on the bottom of the cards as the Dark Lady may not move in the latter ones. The extra movement sequences in the rulebook are also graded, and there are some challenging ones in there.
thanks for this additional information and apernetly there are moren ways to adjust the difficulty (see my reply above)