This one felt very straightforward. Not really any tricks to see here from what I can tell.
Edit: just went back, I now see the false paths. OK, decently cute.
Another nice one. Started off 10-off, figured out the right path to get to 4-off, and then after a couple more attempts I got the optimizations needed for the solution. Fun level.
This is an OK level. The trick feels like more of a "gotcha" than something fun to discover. The rest is relatively straightforward with just one small optimization section.
Insights