I thought the clue for the picture corners was a long shot. with a space between the / \ it is still challenging but within reach

It was alright. A lot of the logic was really abstract and around half of the puzzle's solutions were very frustrating to figure out. This may just be my personal taste but I just don't think you could have figured out some of the puzzles without a walkthrough. Aside from that, you can't de-select items which isn't that big, but it still frustrated me.

Now that was a nice challenge! :D EVen the puzzle at the end, which is always the same, had a bit harder picture!