GridWits
Easy tier Technique 3 of 21 Smart Hint: Skyscrapers and Skyscrapers+

Clue of One

A clue of 1 means the tallest building is visible right at that edge — place the max height there.

How it works

  1. 1The 1 on the left edge says exactly one building is visible looking along the top row.
  2. 2That's only possible if the very first building is the tallest — everything behind the 4 is hidden.
  3. 3Place the 4 right at the edge.
1
  • Relationship — The arrow shows which cells support the deduction.
  • Conclusion — The final arrow lands beside the proved or ruled-out height.
Next in the ladder Full Visibility Clue →

A clue equal to the grid size means every building is taller than the last — the whole line is forced into one exact order.