• Objective
• Board and Ships
• Play
• Variants
• External Links

Battleship is played on four square grids (usually 10x10), two for each player.

On one grid the player arranges ships and marks the opponent's shots.  On the other grid, the player marks his own shots.

On this site the following ships are used:

Picture	Description	Length	Quantity
	Patrol Boat	1 cell	x4
	Destroyer	2 cells	x3
	Submarine	3 cells	x2
	Battleship	4 cells	x1

In the first phase of the game each player arranges all of his ships secretly on the first grid.  Each ship occupies a number of horizontally or vertically adjacent cells on the grid.  The number of cells for each ship is determined by the type of ship.  The ships can neither overlap (i.e., just a single ship can occupy any given cell in the grid) nor be adjacent to each other (i.e. occupy adjacent cells).

After players finish placing their ships, the second phase of the game begins.  During the second phase players take turns taking shots.  For taking a shot each player announces coordinates of the target cell and the opponent announces the result of player's shot, i.e. "hit" (if the target cell is occupied by an opponent's ship) or "miss".  Every time a player hits an opponent's ship, he gets an extra turn.

Many variants of this game exist, including different sized grids, the number and sizes of the ships, the number of shots allowed, whether or not to declare when a ship has been sunk, and when hits are announced.

This site has the following variations:

• Adjacent ships can be allowed.
• No extra shot on hit.

• Battleship rules on Wikipedia.