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Free printable Fleet Hunt with answers

A Fleet Hunt is solitaire battleships with a pencil. A known fleet is hidden in the sea, no two ships touch even at a corner, the numbers beside each row and column count the ship squares in that line, and a few squares are revealed to start you off. The fleet is printed under every grid, because knowing what is left to find is half the solve.

By size

A bigger fleet in a bigger sea is what makes a Fleet Hunt harder, and the harder grades reveal less of it too. Measured as the search it takes to prove the answer unique, the top grade is over three hundred times the first.

By audience

Most people already know the game, which makes this an unusually easy logic puzzle to hand someone, and the version with a pencil never ends on a lucky guess.

One fleet, every time

This is the guarantee that takes real work here. The numbers alone almost never pin a fleet: measured on a bare eight by eight board with nothing revealed, only 9 layouts in 200 were fixed by their counts, because two identical ships can usually swap places without moving a single number. The revealed squares are what close that gap, and the generator takes them away one at a time for exactly as long as the board still hides one fleet and no other. Every puzzle here is checked by the same solver our Publisher Studio uses. The answer prints at the back.

How to solve a fleet hunt

A whole fleet is hidden in the sea. Ships never touch, not even at a corner, the numbers beside each row and column count the ship cells in that line, and a few squares are revealed to start you off.

The method

  1. 1Cross out the zeros, then fill the full lines. A row or column numbered 0 is all water. A line whose number equals the squares it has left is all ship. Both are free information and both usually settle a corner of the board straight away.
  2. 2Work outward from every revealed square. A revealed square tells you more about its neighbours than about itself. The four diagonals of any ship square are always water, because a ship runs straight and no two ships touch. A round end points at open water on its curved side and at the rest of its ship on the flat one. A single is surrounded by water on all eight sides.
  3. 3Place the biggest ship first. The longest ship has the fewest places it can possibly go, and every square it takes puts a ring of water around it that the smaller ships cannot use. Work down the fleet by size and cross each ship off as you find it.
  4. 4Check a line can still reach its number. If a row still wants three ship squares but only two are left that any ship could use, something earlier is wrong. That check catches a mistake several moves before the board visibly contradicts itself.
The one rule people get wrong
Ships never touch, and that includes corner to corner. A square diagonally next to a ship is always water, which is the single most useful fact on the board.
What the answer page shows
The whole fleet, drawn in place on the same grid.
How the grades differ
A bigger fleet in a bigger sea, with less of it revealed. The numbers alone almost never pin a fleet, so the revealed squares are what make the puzzle solvable, and the harder grades give you fewer.
Good for
Anyone who likes working from a few fixed points outward.

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