Ver 1.20 - No more guess updtae
So, All puzzles are solvable in Click Painter. (Except custom mode).
Up until now, Classic Mode and some of the starting points in Story Mode could require some guessing.
As of this update, All puzzles in Story Mode and Classic Mode are guaranteed to be solvable.
For Custom mode, the game will try to find a solvable starting point, but not always succeed in finding a solvable starting point.
Thank you for reading, and have a nice day! :)