Battleships (also known as Sea Battle or Battleship) is a strategic guessing game for two players. It's a game that dates from World War I. It was published by various companies as a pad-and-pencil game in the 1930s, and released as a plastic board game by Milton Bradley in 1967.
What does this have to do with spreadsheets? Because if you know how to play Battleships, you already know how to identify cells in a spreadsheet!
Download and play this pen-and-paper version of the game with a friend whenever you need a break from working on your spreadsheet. Think of it as "spreadsheet cell identification practice"!