GridWits
Easy tier Technique 3 of 18 Used by Smart Hint

Separated by One

Two clues with exactly one empty cell between them in a row or column — that cell is sea.

How it works

  1. 1Two clues sit in the same row with exactly one empty cell between them.
  2. 2That middle cell touches both clues — joining either island would connect them, which isn't allowed. It's sea.
2 2
  • Sea
  • Cells that establish the pattern
  • Where the conclusion lands
Next in the ladder Completed Island →

Once an island's marked cells already equal its clue, every cell around it is sea.