Placement Overlap
Every spot the remaining ship could still occupy passes through these cells — they're ship no matter which spot is right. A finished ship already fenced in by water never counts as a spot for its same-sized twin, which is often what leaves just one place left.
How it works
- 1One 3-ship is all that's left, and every row below the top one is already water, so it has to lie in the top row.
- 2A row of four gives it exactly two spots: the left three cells, or the right three.
- 3Both spots pass through the middle two cells — mark those as ship no matter which spot is right.
- Ship segment
- Water
- Cells that establish the pattern
- Where the conclusion lands