Tested, no guessing required. It has some tough spots though.

You couldn't even solve a 2* puzzle on this site if you only looked at JUST the numbers. Even as simple as filling 5 middle squares in a 15x15 with a 10 requires by your definition "guessing" because you have to mentally look every position where the 10 could go and then fill in the overlapping squares between all those (ie. the middle 5). And that's a technique used in every single puzzle on this entire site. (Also technically the only technique ever used in Hanjie, just further refined to more specific instances).

Technically a logical puzzle is a puzzle with exactly one correct/possible answer, no matter how you get there, but for most people, it means one possible solution which requires at hardest 2-4 step chains of logic, so it's "humanly doable".

This puzzle is fully logical and at hardest requires two steps of depth so it's not even that hard.

Had to get this out there because I feel like not many people even know how to define logical past just "Can I get there using methods that I'm aware of/comfortable with?". Also, the question of whether or not using temporaries keeps a puzzle logical when we all basically use them in our head when counting even the simplest stuff like the aforementioned 10 in 15x15.