GridWits
Easy tier Technique 1 of 12 Used by Smart Hint

Diagonal Water

Ships never touch, not even at a corner — every cell diagonally next to a ship cell is water.

How it works

  1. 1A ship cell is confirmed in the center.
  2. 2Ships never touch, not even at a corner — and no ship bends, so a ship's own continuation is always straight ahead, never diagonal.
  3. 3All four diagonal neighbors are water, no matter how long this ship turns out to be.
  • Ship segment
  • Water
  • Cells that establish the pattern
  • Where the conclusion lands
Next in the ladder Ship at Full Length →

This ship run is already as long as the longest ship still unplaced — it can't grow, so the cells at its ends are water.