This is part of my "guess the 4-digit number" series. If you like, you can see the other puzzles here, here, here and here.

On the right you can see a lock, which keeps the door of my hut closed. On the left you can see a strange object, which I keep next to my hut. Can you guess the combination of the lock?

enter image description here

  • $\begingroup$ Does it have something to do with the sum of the sections of each color, or a hidden number of each color? $\endgroup$ – ben-Nabiy Derush May 12 '17 at 3:47
  • $\begingroup$ @ben-NabiyDerush I would say it is simpler. If you find the answer, you will know it is correct. $\endgroup$ – Puzzle Prime May 12 '17 at 3:48
  • $\begingroup$ Was just passing by and saw this. At first I tried to solve it, but then looked for an answer. I can't write comments, so sorry, but I couldn't keep silence. And I don't get it. How did you get the digits? The first digit is 0. Everyone here agrees on that. Suppose the number of separate flat surfaces is a key to the lock. There are 5 blue surfaces. Let's slide the slider 5 times. And we will get 5, not 0. Ok. Maybe it's the straight flat surfaces. And there are 7 of them. Nope. That won't help. Suppose, you put the figure looking at one color. I still don't get it. Sorry for my stupidity, but $\endgroup$ – Vladimir Markiev May 12 '17 at 13:39
  • $\begingroup$ +1 for very appealing visuals. How did you make them? $\endgroup$ – BmyGuest Jun 7 '17 at 7:28
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    $\begingroup$ You might want to "group" your series puzzles slightly better. Instead of relinking them all (and needing to edit the links), you can provide a clearly searchable starter-line and then provide a link to a search for exactly this "identification". Like I did for my own series. $\endgroup$ – BmyGuest Jun 7 '17 at 7:31

Is it



If you were to view the figure so the the color on top is the color of the slider (orange is on the bottom) you see a 0 for blue, 2 for green, 5 for orange, and 1 for red. You can view a 3d model of the figure here.

  • $\begingroup$ Almost there. The color at the back of the piece is yellow, not orange. $\endgroup$ – Puzzle Prime May 12 '17 at 3:55
  • $\begingroup$ Is it right now? $\endgroup$ – qwewqa May 12 '17 at 3:59
  • $\begingroup$ Yes, it is correct! $\endgroup$ – Puzzle Prime May 12 '17 at 4:03
  • $\begingroup$ Very resourceful way to get 4 different digits, @Artur Kirkoryan $\endgroup$ – humn May 12 '17 at 4:54
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    $\begingroup$ This was my first thought except for the red number, which would appear to be just a big ol' square? $\endgroup$ – moopet May 12 '17 at 10:13

My guess is:



if viewing the planes, you would see each number, with the orange being underneath, so opposite the 2, which is 5.

  • $\begingroup$ That's correct, but qwewqa beat you with few seconds to it:) $\endgroup$ – Puzzle Prime May 12 '17 at 4:02
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    $\begingroup$ Leave it to me to be slow on the save... Nice puzzle. $\endgroup$ – ben-Nabiy Derush May 12 '17 at 4:04


0521, 0551 and 0221

not also possible answers?

Or are there some hidden instructions i do not see, which specify where the bottom of the different sides is supposed to be?

  • $\begingroup$ How can you look at individual colors from multiple sides? I can see, every color can be seen from only one side. $\endgroup$ – Techidiot May 12 '17 at 10:21
  • $\begingroup$ You can rotate what you see 180° clockwise, since you (or at least i) do not know what the correct position is, there are multiple possibilities. For example if i came from the left side, the second row solution would be the smaller number, but coming from the ride side it would look like the larger number. $\endgroup$ – IIOIOOO May 12 '17 at 10:49
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    $\begingroup$ @IIOIOOO Rotating the digit 2 or 5 by 180 degrees keeps it the same. They are mirror images of each other, and you can only get to see the mirror image if you look at the shape from the opposite side, which will have a different colour. $\endgroup$ – Jaap Scherphuis May 12 '17 at 11:09
  • $\begingroup$ insert facepalm indeed, you are right, sorry $\endgroup$ – IIOIOOO May 12 '17 at 11:13

Is it:



5 Blue and 5 Green and 0 orange and 4 red...

  • $\begingroup$ Welcome to PSE! First of all, it's customary to put your answers in spoiler tags so as not to ruin the surprise. Secondly, this question has already been correctly answered. Thirdly, you might want to elaborate on your reasoning. I had to check the image a couple of times before realizing what you meant but I still don't understand how it connects to your actual answer. $\endgroup$ – F1Krazy May 12 '17 at 13:37
  • $\begingroup$ @F1Krazy / sorry my first puzzle and my first day off in 3 years so im a noob to having fun...i promise my next puzzle will be spectacularly answered...! $\endgroup$ – James May 12 '17 at 13:44
  • $\begingroup$ @James You can still edit your answer to indicate the reasoning behind it. It might help someone in the future, and will in general be a good practice to have. $\endgroup$ – ben-Nabiy Derush May 14 '17 at 17:26
  • $\begingroup$ How do you get 2s from 5s and 1 from 4 if 0=0? $\endgroup$ – feelinferrety Jun 8 '17 at 21:54

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