I've been trying to figure out how to get rid of the red spikes and I cannot do it even after reading other comments. I've tried to do it both slowly and fast in different ways. Unfortunate, because I wanted to see what kind of puzzles there were.
Okay I finally figured out a consistent way to do it somehow and managed to beat the game. I liked the variety in the puzzles. I'm improving my rating now that I have played it all.
