'Hand' (10x10) has a non-unique solution

[shaun-chiang]

First of all, thanks for this repo, the UI looks great and I had fun solving some of these puzzles :)

Would like to point out that 'Hand' has a non-unique solution - I only managed to solve it by 'guessing' how the picture looks like. The problematic section is here:

of which, the intended solution is:

However, a possible other solution (which is valid) is:

The latter solution, though valid, is considered wrong. Personally, recommend changing the puzzle to have a unique solution vs the UI allowing solving with multiple solutions.