Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Nine-Dot Puzzle

Nine-Dot Puzzle

Can you solve it?


C. Todd Lombardo

October 05, 2015


  1. Connect 9 dots with 4 or less straight lines, do

    not lift your pen once you begin, and do not reverse to cover where you’ve already drawn.
  2. None
  3. Did you think outside this box?

  4. Could you do it with 3 lines?

  5. Nothing was mentioned about squiggly lines!

  6. What if you had a REALLY LARGE pen?

  7. Question everything. Check your assumptions. Run a Design Sprint: designsprintbook.com

  8. designsprintbook.com