Yes, I had noticed that; it wasn't the game itself that confused me, but rather the way the on-screen elements are designed. For instance, the background color of the pieces that can be swapped is very similar to that of the pieces that remain fixed. Also, it wasn't immediately intuitive how to move the character—you have to swipe from one square to another—so I ended up just clicking on empty squares until I figured it out. Then again, perhaps I approached it the wrong way, as this isn't really my genre.