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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
Math Riddle Genius Test: Can you join all 9 dots with 4 lines in this viral puzzle?
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Puzzle | Draw 4 straight line in 3*3 matrix (9 dots) - GeeksforGeeks
History of the Nine Dot Problem – Art of Play
Nine Dot Puzzle - Andy Eklund
recreational mathematics - How to prove the number of solutions to nine dots puzzle - Mathematics Stack Exchange
Math Riddle Genius Test: Can you join all 9 dots with 4 lines in this viral puzzle?
Nine dots puzzle - Wikipedia
How The Nine Dot Puzzle Can Boost Creativity - Thrive Global
Connect 9 Dots with 4 Lines: Why 'Thinking Outside the Box' Doesn't Work
The nine-dot puzzle. The task consists of connecting all 9 dots with... | Download Scientific Diagram
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Math Riddle Genius Test: Can you join all 9 dots with 4 lines in this viral puzzle?
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Connect the Nine Dots Riddle: Step by Step Solution | Suresolv
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9 dots problem | Join with 4 lines (Experts) | Join with 3 lines (Masters) - YouTube
History of the Nine Dot Problem – Art of Play
9 dots 4 lines | 9 dots 1 line | This tricky puzzle & the awesome riddle has three genius solutions - YouTube
Puzzle | Draw 4 straight line in 3*3 matrix (9 dots) - GeeksforGeeks
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Nine dots puzzle - Wikipedia
How to connect 9 dots with 4 straight lines without crossing the lines - Quora
7: Nine dots puzzle: draw four straight lines that go through all nine... | Download Scientific Diagram
