C# translation approved, let me know any issues

It seems like you have a typo, it's loaded as "willHotCorner" instead of "willHitCorner"

Added

Fixed

Got it, changed so all inputs are valid

Hey! I'm very new to this, how do I set it up to expect an error? Or should I remove edge cases?

Fixed

Fixed

I'm very confused. How can you solve

 _ 
|_ 
|_|
   
  |
  |

As c1? If you switch c1 wouldn't it be invalid in both cases? Are you changing it on both or one number? I see how c1 is the only commonality between both, but is that the reason? I don't understand.

Also, in this case, how can you know for sure the last number will be 4 and not 9?

     _   _ 
  |  _|  _|
  | |_   _|
     _   _ 
|_| |_  |_ 
  |  _| |_|
 _   _     
  | |_| |_|
  | |_|  _|