Against

Beautiful showcase of an essential optimization

5x5 1000000000

Aside from the start, this level doesn't have interesting choices; it's solidly built, but unfortunately not very interesting

Very odd, very tricky to break through - though not hard to optimize, this is a good puzzle

It's a shame there are so many 55s and no interesting ways to pipe

A great classic level that challenges what you know about breaking through structures - there's rich logic here

Great structures! It was enjoyable even as I was able to find the trick right away, and the optimization is interesting as well.

It's a decent crucible-like level; I had to think a bit to find optimal, though it did only take one attempt.