Here’s a simple LEGO® challenge that is fun to build and play – build a three piece mechanical puzzle and figure out how to put it together!

LEGO Mechanical Puzzle

We saw this idea on Instructables and decided to try it out.  It works really well!

Build the three shapes below.  Two of them are identical.  Note that each section has three layers: a layer of regular bricks in the middle, a layer of smooth flat bricks on top, and a layer or regular flat bricks on the bottom.

LEGO Mechanical Puzzle

Then, try to fit the three pieces together.  It might take a few minutes to figure it out.

LEGO Mechanical Puzzle

The finished puzzle should look like this:

LEGO Mechanical Puzzle

If you can’t figure it out, head over to Instructables – there is a video that shows how it’s done!

Ready for more of a challenge?  Check out this 12 piece LEGO mechanical puzzle!

LEGO® is a trademark of the LEGO® group of companies which does not sponsor. authorize, or endorse this site.

2 Comments

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  1. JJ Aug 28, 2015

    Oh wow! Another great Lego idea to show my 9 year old!!!

    JJ
    www.dressupnotdown.blogspot.com

    Reply
    1. Cindee Nov 16, 2015

      Great idea but I wish it didn't say - Frugal Fun for Boys!! What about GIRLS!! Just sayin'

      Reply

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