Observe the following question carefully and answer accordingly.



closed as unclear what you're asking by Marius, Mike Earnest, Aza Jul 29 '16 at 18:05

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    $\begingroup$ is it really puzzle , or you just pressed randomly on keyboard.as there are many A's U's and S's $\endgroup$ – Amruth A Jul 29 '16 at 10:16
  • 4
    $\begingroup$ stackoverflow.com/questions/22413868/… $\endgroup$ – smriti Jul 29 '16 at 10:18
  • $\begingroup$ is this helpful? $\endgroup$ – smriti Jul 29 '16 at 10:19
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    $\begingroup$ If you use this tool to convert the string it's literally just a 15x15 red image. I don't know if it's reliable, though. $\endgroup$ – user14478 Jul 29 '16 at 10:19
  • $\begingroup$ @smriti Yes, go ahead! $\endgroup$ – Hitesh Dholaria Jul 29 '16 at 10:32

The answer is



This is a base64 encoded binary file that contains two png files. When viewing this in a normal viewer, it will only read the first png file, which is a red square. When the two files are shown on top of each other by a non-conforming (as in: does not follow the specification) PNG viewer it will show the green square under this red square.

as shown here:

enter image description here

  • $\begingroup$ @Samurai8 Quite close to the answer but not the correct answer yet! $\endgroup$ – Hitesh Dholaria Jul 29 '16 at 11:00
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    $\begingroup$ I am clueless as to what you expect more as an answer. This question depends on a non-conformant image viewer. Simply overlaying them does not work: jsfiddle.net/qzutx783 . There are no text blocks in the image data. There is a CR3 sequence inside the IDAT block that is quite different from the other image. I can't find any documentation on that whatsoever though. $\endgroup$ – Sumurai8 Jul 29 '16 at 12:49
  • $\begingroup$ The L is Vladimir Lenin, of course. He's buried in the Red Square. :) $\endgroup$ – M Oehm Jul 31 '16 at 15:40
  • $\begingroup$ That... well, that sounds like it could be an answer. $\endgroup$ – Sumurai8 Jul 31 '16 at 18:22

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