Julia Bowman (1919-1985) was a prestigious American mathematician. She was the first female member of the Mathematics Division of the United States National Academy of Sciences, and the first female president of the American Mathematical Society.

She dedicated part of her scientific work to game theory, which is a branch of mathematics with applications in very different disciplines (sociology, psychology, economics, business management, military strategy, biology, artificial intelligence, etc.) that analyses the interactions between individuals who make decisions. In fact, Julia managed to prove a convergence theorem that is considered the most important one in Elementary Game Theory.

The following game is proposed: The OSO game

It is played in pairs. It is a paper-and-pencil game of strategy that is usually played in a grid.

Rules:

• In turns, each player can write an O or an S in one of the squares. The objective is to form the word OSO ("BEAR" in English). The person who forms the most times the word OSO wins.
• When a player manages to complete the word OSO, they must repeat turn placing another letter. 
• The game ends when all the squares on the grid have been filled. 
• There are two ways to play, scoring only the word OSO written horizontally and vertically on the grid, or scoring the word OSO written diagonally as well. 
• The form of play must be agreed upon before the game begins.