<---Previous clue

[redacted] [redacted] [redacted] [redacted] [redacted] [redacted] [redacted]

"Where?" you ask. "I don't see anything."

"That's the point - the image is invisible, doofus."

You don't appreciate being called a doofus, but you step forwards anyway and peer at the apparently empty screen in front of you. You turn around.


The question dies in your throat as you realize that [redacted] is gone. With a sigh, you turn to the screen again:

this image is invisible

And then the second screen:

also invisible

Next clue--->

  • 1
    $\begingroup$ -1 because this puzzle is inherently impermanent. $\endgroup$
    – Will
    Aug 15, 2016 at 19:13
  • $\begingroup$ @Will Whaddya mean? I'm leaving that in my profile. If not, I'll change the puzzle to a screenshot. $\endgroup$
    – Mithical
    Aug 15, 2016 at 19:15
  • 3
    $\begingroup$ -1 both for @Will's reason and because the puzzle is uninteresting. It's just a long chain of QR codes. $\endgroup$
    – Deusovi
    Aug 15, 2016 at 19:19
  • $\begingroup$ @Deusovi I was going to add another step but I forgot. o_o I accept the DVs. $\endgroup$
    – Mithical
    Aug 15, 2016 at 19:20
  • $\begingroup$ Its a different sort of puzzle but you over-used the QR Codes. $\endgroup$ Aug 15, 2016 at 19:24

2 Answers 2


The images hide

two QR codes, using transparency for "white" and white for "black": enter image description hereenter image description here

They say

see my profile and all the way at the bottom: in Mithrandir's profile there is another link to another QR code.

That one says

https://i.sstatic.net/ch3wd.png, which is another link to a QR code.

That one says

https://i.sstatic.net/gpaTg.png, which finally isn't a link to a QR code! It's a link to a regular bar code instead.

And that one finally says


  • $\begingroup$ Think I beat you to it by a few seconds! +1 though as you got the answer too $\endgroup$ Aug 15, 2016 at 19:26
  • 3
    $\begingroup$ @BeastlyGerbil I saw this complete answer before your grace period edit. ;) $\endgroup$
    – Will
    Aug 15, 2016 at 19:27
  • 4
    $\begingroup$ @BeastlyGerbil: No, you didn't. I beat you to it, and then you edited your answer in the grace period. (Also, how does a barcode decode to something in bold? There's no syntax for that.) $\endgroup$
    – Deusovi
    Aug 15, 2016 at 19:27
  • $\begingroup$ @Deusovi I don't know my QR scanner just said magnesium and it was bold. Sorry if you beat me to it - I'll ask Mithrandir to transfer the accept if you all think that $\endgroup$ Aug 15, 2016 at 19:29
  • $\begingroup$ Requested the accept to be transferred - don't know if @Mithrandir is still active though... $\endgroup$ Aug 15, 2016 at 19:32

By saving the first image it comes up with a QR code:

First QR Code

By scanning it I get the information:

See my profile

The second image gives us another QR:

enter image description here

Which gives us:

All the way at the bottom

In his profile at the bottom it says:

For Clue 10: https://i.sstatic.net/SriHL.png

The link gives us:


Which decodes to


Which gives us a barcode:


Which decodes to:

Magnesium (In bold)


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