The opening and mid-game in Battleship get all the attention. But it’s the endgame — finding that last ship hiding among a grid full of confirmed misses — that often determines who wins. This guide is specifically about the late stage, when one or two ships remain.

When Does the Endgame Begin?

There is no formal boundary, but practically the endgame starts when three or more ships have already been sunk and you are hunting for the remainder. At this point:

  • Most of the grid is marked (hits or misses).
  • Open squares are scattered in patches rather than in one large block.
  • The remaining ship lengths are known.

This changes the strategic landscape compared to the opening, where information is scarce and the grid is wide open.

Step 1 — Know What You’re Looking For

Before firing another shot, inventory the situation:

Information What it tells you
Ships sunk (yours and theirs) Remaining fleet composition
Hits still unresolved Possible partial hits on unsunk ships
Miss pattern on target grid Where ships definitely are not

If you’ve sunk the Destroyer (2), Cruiser (3), and Submarine (3), the remaining ships are the Battleship (4) and Carrier (5). The smaller of the two determines your minimum search spacing.

Step 2 — Eliminate Impossible Squares

A ship of length N requires N consecutive open squares in a horizontal or vertical line. Scan your target grid and mark any square that does not have N-1 additional consecutive open neighbors. That square cannot contain the ship.

Example

If you’re hunting a Battleship (4 squares) and you see this row:

Row 5: M _ _ M _ _ _ M _ _
        A B C D E F G H I J

(M = miss, _ = open)

  • B5–C5: Only 2 consecutive open → cannot fit a 4-square ship horizontally
  • E5–G5: 3 consecutive open → still cannot fit a 4-square ship horizontally
  • I5–J5: 2 consecutive open → cannot fit

So Row 5 cannot contain the Battleship horizontally. You’d check vertical possibilities for each column as well.

Step 3 — Adjust Your Spacing

With fewer and longer ships remaining, widen your hunt spacing:

Remaining smallest ship Spacing needed
Destroyer (2) Every 2nd square
Cruiser/Submarine (3) Every 3rd square
Battleship (4) Every 4th square
Carrier (5) Every 5th square

Apply this spacing only within open clusters — there’s no point spacing shots through areas that are already checked.

Step 4 — Prioritize Large Open Clusters

The remaining ship must fit inside a contiguous group of open squares. Larger clusters can accommodate the ship in more orientations, making them higher probability. Scan for clusters and rank them:

Cluster Size Can fit remaining ship? Priority
Around D2–F4 12 open squares Yes (many orientations) High
Around H8–J9 6 open squares Yes (few orientations) Medium
Around A10–B10 2 open squares Only if ship is Destroyer Low

Fire at the highest-priority cluster first.

Step 5 — Use Probability When It’s Simple

In the endgame, the density map becomes simple enough to compute in your head. If you’re looking for a 4-square ship and there are exactly three possible placements left, you can identify the square that appears in the most placements:

  • Placement A: E2–E5 (vertical)
  • Placement B: E3–E6 (vertical)
  • Placement C: D4–G4 (horizontal)

Counting square appearances:

Square Appears in placements
D4 C
E2 A
E3 A, B
E4 A, B, C
E5 A, B
E6 B
F4 C
G4 C

E4 appears in all three placements — fire there first.

Step 6 — Handle Unresolved Hits

Sometimes you have a hit from earlier that you never fully resolved — maybe you got one hit, checked all four adjacent squares and missed, and moved on. In the endgame, revisit these:

  • Could the hit belong to a ship you’ve already sunk? (If a sunk ship covers that square, it’s resolved.)
  • If the hit doesn’t belong to any sunk ship, a remaining ship must pass through it. Check at what angles it could extend and fire along those lines.

Common Endgame Scenarios

Last Ship Is the Carrier (5)

This is the easiest late-game hunt because the Carrier is huge. With 5-square spacing, you only need about 20 shots to cover the board. In practice, after 60+ shots have already been fired, there are rarely more than 3–5 possible Carrier positions left. Scan your grid, identify them, and check one per turn.

Last Ship Is the Destroyer (2)

This is the hardest endgame. The tiny Destroyer can hide in any 2-square gap. You must maintain parity spacing, and there may be a frustrating number of small gaps to check. Prioritize the gaps near the center of the grid where you may have spread your misses.

Two Ships Remain

Set your spacing based on the shorter ship. After you find and sink it, widen spacing for the longer one. Don’t try to optimize for both simultaneously — hunt the harder target (smaller ship) first.

Endgame Mindset

The endgame can feel frustrating. You’ve been efficient all game, and now the last ship seems invisible. Key mental habits:

  1. Don’t rush. Each shot matters more in the endgame because there’s less margin for error.
  2. Trust elimination. If you’ve correctly marked all misses, the ship is in one of the open clusters. Stick to the process.
  3. Double-check your grid. A single tracking error — forgetting to mark a miss — can send you hunting in the wrong area. Verify your target grid is accurate.
  4. Stay patient. Even top players sometimes need 10+ shots to close a game. The endgame is meant to be tense.

Endgame Checklist

Before making your endgame shots:

  • Identified all remaining unsunk ships and their lengths
  • Scanned for open clusters on the target grid
  • Eliminated clusters too small for the remaining ship(s)
  • Set spacing based on smallest remaining ship
  • Checked for unresolved hits from earlier in the game
  • Prioritized largest open cluster

Follow this checklist and you’ll close out games more efficiently than the average player, turning tight matches into consistent wins.