Arrange the following terms in order of increasing denotation.

The order of increasing denotation runs Chess, Board games, Indoor games, Sports.

Denotation means the range of things a term applies to, so the arrangement goes from narrowest class to widest.

Chess is one specific game, so it has the smallest denotation.

Every game of chess is a board game, and board games form a wider class.

Board games fall under indoor games, which in turn fall under the still wider class of sports.

So the increasing sequence is 1, 2, 4, 3.