Write a class named ChessVar for playing an abstract board game that is a variant of chess.

A method called make$\_$move that takes two parameters $-$ strings that represent the square moved from and the square moved to$.$ For example, make$\_$move$(\text{'}$b$2\text{'},\text{'}$b$4\text{'}).$ If the square being moved from does not contain a piece belonging to the player whose turn it is$,$ or if the indicated move is not legal, or if the game has already been won, then it should just return False. Otherwise it should make the indicated move, remove any captured piece, update the game state if necessary, update whose turn it is$,$ and return True.