requiring the diagonals to add up to 15 was stupid. it made me think, when i'd done it for the rows and columns that i was on the wrong track.
also having the word "is" flash to the number "15" on the sign as though it was some kind of hint... when the puzzle clearly says 15 in the lower left already was stupid.
the second puzzle should have had the word "blind" scrambled. not just "blin"
forcing us to use all 7 moves to make the lines into a 5 when it was trivial to make it a 5 in 4 was idiotic.
i was able to solve all these puzzles, but i'm at an intelligence level where i'm able to breeze through something and still see that it's stupid.
i'm not saying they were too hard. that would be giving you too much credit. they were just poorly designed.