- One pencil per player
- Four sheets of paper
- On each sheet of paper draw a grid ten columns by ten rows.
- Across the top of the grid, label the columns with the letters A through J, one letter per column.
- Down the left side of the grid, label the rows with the numbers one through ten, one number per row.
- This game requires two players.
- Each uses two grids-one to mark her own battleships and one to record her guesses as she searches for her opponent's battleships.
- Each player positions eight battleships (one ship five squares long, two ships each four squares long, three ships each three squares long, and two ships each two squares long) on a grid by marking squares.
- Each player should make sure her opponent can't see her grid.
- Before playing, decide whether a battleship can be sunk by one hit or must be hit in each space to be sunk.
- One player starts the game by guessing a location where she thinks one of her opponent's battleships may be (for example, D-five). If the opponent has a ship at that location, the opponent says, "Hit." If no ship is there, the opponent says, "Miss."
- A player records her guess on her second grid by marking the location with an H (hit) or M (miss).
- The players take turns guessing in this way.
- The first player to sink all her opponent's battleships wins.