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Sea Battle

Ten ships hidden on a grid of a hundred squares, and a hundred years of people playing it on the back page of an exercise book. Play the computer straight away, or send a friend a link.

Play the computer

How to play

Read the rules

Ships may not touch, a hit earns another shot, and sinking one clears the water around it. The full rules take two minutes to read.

Read the rules →

Learn to win

Half the board never needs a shot — until the last four ships, when that stops being true. The difference between a careless player and a good one is mostly this.

Learn to win →