Not logical in the corners.

I honestly guessed the entire puzzle and still got it right.

I think that's a new record. Almost 8192 possible solutions per corner just by exchanging two squares in different combiantions. This to the power of 4. If I had a Dollar for each of those options... Then there are several additional solutions for other permutations of squares.
I guessed the solution, too. But of course wrong at first.

I think tese comments are a bit harsh, its not logical but easily guessed if you follow the same pattern. it is hard enough to create hanjie puzzles without people being mean when you make a mistake.

I did it in 8 minutes, after 5 solutions. It is guessable !! ... and you will receive many points, yes !!

OK!!! It's easy to be guessed corners. Imagine that after 13s follows 15s and 17s out of the puzzle boundaries and then try to join them.

I got a solution but apparently it isn't the right one? Are you kidding??

Althoug requires some guessing, totally easy to determine it.