There are 3 known solutions for the famous 9 dots 4 lines brainteaser. Are there other solutions where the lines actually connect all dots? - Quora
9 dots 4 lines | 9 dots 1 line | This tricky puzzle & the awesome riddle has three genius solutions - YouTube
Connect the Nine Dots Riddle: Step by Step Solution | Suresolv
Puzzle 391. 9 dots and 8 lines graph*
Can You Connect These 9 Dots?
Creativity boost - Solutions to the nine-dot problem
Nalin on Twitter: "Love the 9 dot puzzle. Are there any other puzzles like this one @mathsjem ? https://t.co/4K2i16Qkef" / Twitter
How to connect 9 dots with 4 straight lines without crossing the lines - Quora
Connecting 9 Dots with 4 lines w/o lifting pencil. - YouTube
9 dots 4 Lines Without Crossing | 9 Dot Puzzle With 4 Lines | 9 Dots 4 Lines Solution - YouTube
Why Nine Dots? - The NineDot Partnership
Connect the Nine Dots Riddle: Step by Step Solution | Suresolv
Regarding the 9 dots 4 lines problem, is there a general solution/algorithm for n*n grids and (n+1) lines? : r/math
File:9 Dots Blue Solved Arrow.png - Wikimedia Commons
Connecting 9 dots with 4 line puzzle | Puzzle Fry
Learn a Magic Trick
Connect 9 Dots with 4 Lines — Answer to the 4 Lines 9 Dots Puzzle
Nine dots puzzle - Wikipedia
Connect 9 Dots with 4 Lines: Why 'Thinking Outside the Box' Doesn't Work
he 9 Dots Problem: introduction and suggestions Problem
Math Riddle Genius Test: Can you join all 9 dots with 4 lines in this viral puzzle?
CONNECTING DOTS WITH LINES ~ Mathematics Realm
Nine dots puzzle - Wikipedia
9 dots problem | Join with 4 lines (Experts) | Join with 3 lines (Masters) - YouTube
File:Nine-dots-four-lines.jpg - Wikipedia
