GridWits
Easy tier Technique 4 of 31 Used by Smart Hint

Clue Needs Every Side

When a clue still needs exactly as many lines as it has undecided sides, every one of those sides is a line.

How it works

  1. 1The clue is 3. Its top side is already crossed out, leaving exactly three undecided sides.
  2. 2The clue still needs all three of its lines, and there are only three places left to put them.
  3. 3Draw the bottom, left and right sides.
3
  • Edge the technique adds
  • Edge ruled out
  • Cells that establish the pattern
Next in the ladder Low Corner Clue →

A 0 or 1 in a grid corner rules out both outer sides, because those two sides must match.