Save The Best For Last G20:
Clear the board with Golden Tiles being the last match on the board.
UPDATE: Since I'm getting down thumbs, I cannot give a recommended day of a month challenge (unless you have premuim) as with all the Microsoft games they end up locking the previous Daily Challenges 2 months back, so I would assume for this game they will do the same. This therefore wouldn't be a permanent solution.
For example when we get to March, January will be locked and etc.
So what I'm asking is, if people find a good level to keep posting them in the comments to help others, that would be great! Thank you.
Original Post: Pretty straightforward, for this you need to go Daily Challenges > Golden Tiles and simply make sure the last match on the board is a set of golden tiles.
Going on an easier difficultly will obviously make this easier