Ok, so I have got 48 cards and 10 ??? items, and I’ve deleted the game and probably won’t bother to gain the last 1 card and 3 ??? items (I know of these through the secret guide over gamefaqs.com) but anyway, even with the guide, I don’t understand how to get the red cube (the one supposed to be associated with the color blocks puzzle in the garden, if I’m not mistaken). Any one can post a picture about it? I think I’ve placed the blocks according to the coordinates, but nothing happened.

EDIT: I just realized what my problem was…this puzzle is in another area than the one that needs to be solved before reaching the final boss...