Regarding the 9 dots 4 lines problem, is there a general solution/algorithm for n*n grids and (n+1) lines? : r/math
recreational mathematics - How to prove the number of solutions to nine dots puzzle - Mathematics Stack Exchange
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History of the Nine Dot Problem - Art of Play
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Connect 9 Dots with 4 Lines — Answer to the 4 Lines 9 Dots Puzzle
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Connect the Nine Dots Riddle: Step by Step Solution | Suresolv
Level Up - Puzzles: Connect a 4x4 Grid of Dots With 6 Contiguous Lines (Solution)
Most Wanted Solutions: 9 Dot puzzle
Puzzle 391. 9 dots and 8 lines graph*
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History of the Nine Dot Problem - Art of Play
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Nine dots puzzle - Wikipedia
Most Wanted Solutions: 9 Dot puzzle
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The Nine Dot Puzzle - Episcopal Church of the Trinity, Coatesville, PA
How to connect 9 dots with 4 straight lines without crossing the lines - Quora
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Thinking outside the box (via Wikipedia.) | Rompicapi, Collegare i puntini, Pensiero laterale
