SpreadSet from Chen Xue was a surprise for me. Look at the 2nd image. The object is to Spread a ribbon from the 16 square to cover all the squares. Yawn.
Then I realized that level 7 or 8 was impossible. Until I realized that one ribbon can push another ribbon out of the way, if there's room.
There are only 25 levels, which I love! I was stuck on level 18 for a couple of days. Must have attempted it 30 times. At the moment I'm stuck on 23.
The graphics aren't great, but that's fine.