Comment by nanofortnight

I found puzzles involving dialation to be quite annoying.

Consider this solution for the third puzzle of Transformation Puzzles 2:

  Reflection over the line from (1.5,-1.5) to (-1.5,1.5)
  Dilation of scale 256 about (2.5,2.5)
  Reflection over the line from (1.5,-1.5) to (-1.5,1.5)
  Dilation of scale 1/256 about (2.5,2.5)

You are unable to visibly discern a difference between the two shapes after this, but the interface refuses.