This is tricky...the last part is purely guesswork so make use of your 'temporary mode' option. And it helps to know what dominoes look like! :)

Have to agree with Howemum. Easy to start yet multiple possible answers even is you do know dominoes still quite possible though.

4,5 5,3 3,1 1,2 2,4.

If you consider the rules of playing domino, it is not guesswork.

Interesting hanjie - playing dominoes while solving the hanjie!

Tricky.

The last part is just a bunch of guess work. Here's a hint:
3 -> /
2 -> / /.

3 -> /
2 -> / /.

My hint came out wrong :(. Here it is:
3 -> down+right, up+right
2 -> up+right, up+right.

DebbieF25 with the save.

Thank you.

The idea is pretty nice, to solve a hanje while using knowledge of how dominoes work. Even then this one has too many multiple solutions though, so it's only solvable using all the hints in the comments.

The most problem is that creator dos NOT know domino. Bot with two are inversed. Anyway... Bad puzzle.

Even with the rules of dominos, that still leaves the 3s and 2s ambiguous. the 3s are mirror images, the 2s are parallel.

The 2's are / / ---- 3's are opposite each other /.