This is a Tuesday masyu puzzle. In addition, all possible circles that could have been given have been given.
I like the concept of this, but black circles may become too powerful, so I don’t know if it has too much potential. Maybe I will try using the “All givens” variation with other types of puzzles.
jacoblance.wordpress.com 
An awesome 0x0 puzzle, but I find not drawing the loop at all to break the rules of the puzzle that states “draw a loop…”.
(Read: where’s the puzzle)
*Facepalm*
Okay, I added the puzzle to the post now.