I've solved this, I believed that, which was the first of many puzzles (when it actually was the last puzzle when I accidentally saw: the cube, in my head)...i hope this Upload worKs:
I promise, I solved this one when I was 'unaware'. and, yet, here it was: a solid cube.
This one took me 2 days to figure out (I swear, yet again, I cheated not):
Ps. I shall rid of the cards if someone keeps track.