I am working at the US department of Alien Research. Yesterday I received this grid of pictures from an unknown source, but unfortunately some pictures are missing.
I have the feeling that this grid could solve some big mysteries about alien life and our universe. Or it could be something else...

enter image description here

Can you please help me find the 4 missing pictures ? (draw them or describe them)


2 Answers 2


They are

consecutive digits, on their sides, reflected about a horizontal axis, on a colourful background. The "unreflected" copy is on the upper side in each case.

What we already see in the grid is

1, _, _ // 4, 5, 6, // 7, _, _

so we need to add

2 (giving a sort of triangle-plus-hooks-on-the-right thing), 3 (giving a sort of astroid-plus-hooks-left-and-right thing), 8 (giving four touching circles, or some slight variation thereon), and 9 (giving two circles with a sort of tail to the left).

They probably

were not produced by aliens.

  • $\begingroup$ Oh, really :( It might be just a joke from a kid then. Thanks for solving it, that was quick ! $\endgroup$
    – Fabich
    Commented May 16, 2016 at 23:32

I drew a picture to complete the puzzle:

alien number grid


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