My puzzles

Solution: CAST Chain

This is the solution for the CAST Chain puzzle.

Solution Cast Chain - Step0/

First of all, this is the start position. The links are in the 1-2-3 order, and when the link 1 is held with its opening like on the picture above, the links 2 and 3 must be in the position shown above. If you’re not in this state due to previous attempts, go back first to that state. The link 2 being symetric, it is not important if its the two holes ID are on the side of link 1 or link 3.
In the coming solution, to allow a better understanding, I marked in green the hole of the link 1 and in blue the 3 holes identifying the link 3. Due to its symetry, link 2 will be without mark. I also tried to keep all the time the link 1 in the same position to help you understand the different moves; except at the very end where it was easier to show it from another side.

Here is, step by step, the solution of this puzzle:

  1. Move the link 3 to align it below the link 1 as shown on pic 1 below. Then, rotate it 90° counter-clockwise and slide it slightly to reach the state shown on picture 2.
    Solution Cast Chain - Step 1

  2. Rotate the link 3 from back to front so that it goes through link 1 to reach state shown on picture 3
    Solution Cast Chain - Step 2

  3. Once interlaced, move the two ends of link 3 from the clear end of link 1 to its other end where the green dot is
    Solution Cast Chain - Step 3

  4. Before having the link 1 go through link 3, make sure to rotate link 2 so that its ends are on the left to reach state shown on picture 5
    Solution Cast Chain - Step 4

  5. Now continue the rotation of link 3 over link 1. The link 1 green end will go through link 3 as shown on picture 6
    Solution Cast Chain - Step 5

  6. Now rotate both links 2 and 3 together around link 1
    Solution Cast Chain - Step 6

  7. Move up the link 2 and bring it to the position shown on picture 8
    Solution Cast Chain - Step 7

  8. Rotate the link 2 through the link 1 to get back to a chain of 3 links, but this time with the link 3 in the middle! (picture 9)
    Solution Cast Chain - Step 8

  9. Fit the special marks of links 1 and 3 together so that the link 1 does not block anymore the center of the link 3 (see picture 10)
    Solution Cast Chain - Step 9

  10. Rotate link 2 to align it with link 3 as on picture 11
    Solution Cast Chain - Step 10

  11. Move link 2 through link 3 to free it
    Solution Cast Chain - Step 11

  12. Now do the same between links 1 and 3 to solve puzzle!
    Solution Cast Chain - Step 12

To mount it back, execute the same steps backward.

/tharn

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6 Comments »

  1. […] See the CAST Chain solution (WARNING, by looking the solution you’ll loose all the fun and pride that self-solving it always […]

    Pingback by CAST Chain « My puzzles — September 7, 2008 @ 3:55 pm | Reply

  2. Hi! On the paper provided with this puzzle it is said something like “there is a different solution depending on which order the links are”. I solved it like you, bringing link number 3 in the middle, but I wondered if there is a way to solve it directly from the starting position without this intermediate step. What do you think about this?

    Comment by lesath82 — November 6, 2008 @ 7:41 pm | Reply

  3. From the initial state shown on pic 1, I don’t think so, as the two special pieces must be brought together before you can move the 2 out.

    Comment by tharnjaggar — November 23, 2008 @ 4:38 pm | Reply

  4. there is more that one way to solve the puzzzle depending on wich piece is in the middle and for my cast chain the one i in the middle

    Comment by dude — December 26, 2008 @ 7:17 pm | Reply

  5. Actually I think it is always “1”-“2”-“3” when you buy it. But if you follow the above steps from 1 to 9 but holding the piece “3” instead of the “1”, you’ll end up with “1” in the middle instead of “3”. So that’s probably what happened with yours (someone already modified it).

    To solve it from there, execute steps 9 to 1 but with “3” being “1” and vice-versa. Then you’ll be back to the starting “1”-“2”-“3” position.

    Comment by tharnjaggar — December 27, 2008 @ 10:32 am | Reply

  6. Well, it’s not that difficult I think. I seperate the pieces in different was than the described one. It’s a universal way so you can join and seperate the pieces in a different other, but it does not make sense … the solution remains the same. This way is soo strange and so complicated

    Comment by thunder — July 4, 2009 @ 2:16 pm | Reply


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