Below average/ failing
As where the game is simple, there are some basic features that I would like added in, like an undo feature. Also, I would like more time to solve the puzzles, and maybe a time bonus square or a square that changes the value of other squares, or maybe even squares that can move more than one space, or squares that can jump other squares. Also, background music is never a bad idea. So to recap:
-- Add music
-- Add undo
-- Add special squares
-- Add more time (also a time attack feature or the way this game is right now could be an extra).