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Sorry, that's actually my fault. It seems I overlooked it while verifying. This can be retracted and corrected but I don't have that ability.

Oh, you can criticize freely, I only thought it would be more informative if you do so on solving paths, etc. I just wanted to say that difficulty levels can easily change, so don't worry about it much.

Hear, hear. Now I'm also unsure as to why I put it at 3*, maybe I missed something obvious the first time around (i.e. when verifying). Anyway, nice and smooth puzzle!

Easy to start and keep up until around halfway and that's where it gets a bit tricky. Maybe I verified it a bit high but if so, it will be a 2* eventually, it is already a low 3*. The difficulty levels are not set in stone after all, they just represent a decimal number (which one can see in one's own puzzles' statistics.).

And I don't mean to be rude but some constructive criticism about the puzzles themselves would be better -for example if you found a nice logic or just liked a design or disliked it- be it positive or negative.

As I was unsure, I verified this one as a high 2*. The fact that it has gone up to 3* means that it did according to user times. Very nice puzzle, either way.

Happy new year!

Well, that was a part of the plan, so if you worked them out very late in the puzzle, all the better!

Thank you!
Yeah, there were some spots where either one of the possible digits eliminates possibilities for other cells.
For example (spoiler): r1c1: 1 or 4 and r1c2: 2 or 3, these prevent the 5 from being a sum, then it surely contains a 1, then r1c1:4.
Glad you caught them.

I'm glad you enjoyed it!

I was trying to make both of them without zeros but got frustrated with the fences version. Oh well, time to make a picnic version.

Yeah, because the three leftmost columns are all shared by three regions, so their stars are certainly in there. Then, their extensions to other columns must be empty . I'm glad it stood out, that's what I wanted actually.

Nice puzzle indeed. Good job!

Well, a puzzle's difficulty is not directly dependent on whether you need to trial-error (it's better if you don't need it much, obviously). You can have a 5* that doesn't require any trial-error, but has an extremely complicated/obscure logic.

I agree that the distinction may not always be clear, but it seems 3* to me.

Again, good job!