Two things. One: I will kill level thirteen in it's sleep.
Two: That awesome feeling when you complete a one second level without getting the ten second hourglass.
1: This game is called ir/rational redux. 2: Redux implies that this is a second version/remake/sequel. 3: If this is the redux, then where is the original?
This is a great game, unfortunately, it's very easy to cheat. You can just fill all spaces in, then click hint and undo all the mistakes. Doing that, you could probably finish the ten by tens in thirty seconds.