Firstly, here’s wishing a very happy birthday to Rohan Rao. 😛
Edit : Fixed a couple of errors. Its fine now.
Now to today’s puzzle. I’m quite happy with this variation.
This is a Slitherlink puzzle, with a twist. The numbers in the cages specify the sum of the digits that’ll be entered into them, among 0,1,2,3. Numbers cannot repeat in cages but can obviously repeat elsewhere and be adjacent from different cages and all that. The object of it is to fill the grid and solve it as a Slitherlink at the same time. Since it may be tedious to draw a loop with the cages around I’ve provided an empty grid too.