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Solution to Hungarian Ring Puzzle


Hungarian Rings or Devil's Circle is a sliding puzzle consisting of  two interwoven rings, which has several color labeled that you cannot take out.

Challenge:
The challenge is to set the balls so that the corresponding colors are next to each other. There are some variations where more than two circles are used or the two circles are not place or the balls are marked by numbers not by colors.

Hungarian Rings Solution

Every state is considered to be a valid solution where the four colors are coherent. In my case I have 10 balls of red, 10 black, 9 blue, and 9 yellow. Different models can have different colors but the solution here presented is with four colors.

Ok, So my rings state is like this in below picture.
Jumbled Rings

First of all solve intuitively, one set of colors which have 10 balls(black) on the right. Then solve the next set of colors having 10 balls (red) on the left. 


When this is done, try arranging the inner colors the yellow and the blue so the two intersections will have two different colors.

In the solution given here you can swap/switch one of the yellow color with one of the blue color. But make sure that the intersections have two different colors. In the above half completed stage the red color is placed next to yellow colored ball and black with the blue colored ball.


Lets say we want to swap/switch the X and Y marked colored balls. That means the X will be placed at the Y position and vice-versa not messing up with the solved balls. 

Steps to perform are:

1. Turn the left ring counterclockwise until the X ball is the fifth after the upper intersection.

2. Turn the right circle until the Y ball reaches the intersection.


3. Move the left circle until both the ball X and ball Y reaches the intersection.


4. Turn the right ring until the ball Y reaches the upper intersection.


5. Now move the left ring until the black ball reaches next to each other.


6. Turn the right ring until the red ball reaches next to reach other like in previous with the black ball.



7. Turn the red and black rings to align to the center in such a way that it matches with the step1 image and the balls are swapped/ switched.



Hence, both the balls are swapped and now all we need to do is to repeat all the above steps in order to swap the balls.

Nothing is Impossible

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