Battleship

Aim at the ships using coordinates and sink the hidden fleet.

The ships are hidden on the grid. Click a cell to fire. Hit or miss? Sink the whole fleet in as few shots as possible!

Grid 6×6, 3 ships to sink.

Against an opponent who fires back

Learning objectives

Grade 3
- Locate a square on a grid using A1 notation (letter column + digit row).
- Encode and decode a plan organised in rows and columns.
- Build a structured trial-and-error approach.
Grade 4
- Read and write the coordinates of a square on an 8×8 grid.
- Form a strategy: infer a ship's orientation after a hit.
- Anticipate a shot's effect using the gap rule between ships.
Grade 5
- Use the cartesian notation (x;y), preparation for the secondary-school coordinate system.
- Use parity (even/odd) to optimise your shots.
- Justify a shot by a logical argument.

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