This reminds me of the Zipper with (one/two) missing tooth/teeth levels. I was warmed up by those levels, so I had no trouble with this one! Great level though! I found the solution quite logical and intuitive.
There's a lot of ways to be 2- and 4-off in here. The way to push things out of the way is quite satisfying when you get it (and quite frustrating before you get it!)
