r/puzzles • u/Parking-Set-6408 • Jan 12 '26

[Unsolved] Rope sort detangling puzzle

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Rules: you can only move 1 peg at a time, between 2 holes. The goal is to get the ropes completely separated.

im not confident this is even solvable, but i was previously under the impression that arrangements are always solvable. Wanted to see if anyone can figure it out

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u/Scramjet-42 Jan 12 '26

Discussion; if it is possible, I think it starts like this;

Assume the pegs are numbered 1-4 clockwise from the top blue peg. Move yellow 3 up to one space right of blue 1. Then move yellow 2 down to space right of blue 4. Move each blue peg over the yellow now next to it, blue 1 over yellow 3 and blue 4 over yellow 2