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You may have seen some posts by Sunny Lu here on my origami puzzles. Now, the full version is out! The goal is to fold the paper into a rectangle (or square) with constant thickness (see examples), and the game contains 30 puzzles with increasing cursedness. Trust me, you'll definitely feel the cursedness towards the end.

Puzzles are very approximately ordered by difficulty. Stars mark puzzles that are much harder than they are expected to be.

Partial answers are allowed.

Edit: here's an extra challenge! See puzzle 14 (the cross shaped advanced puzzle) and puzzle 29 (the 101 thickness)? Prove that puzzle 14 is solvable for all thickness >1, and puzzle 29 is solvable for all thickness >3.

enter image description here

enter image description here

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    $\begingroup$ The top right was actually easier than I expected $\endgroup$
    – PDT
    Commented Apr 29 at 14:37
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    $\begingroup$ The little number in each picture represents the number of layers in the solution? Is that supposed to be 57 and 101 in the bottom row? Otherwise I can solve all the puzzles aligned with the grid by just layering everything on a single grid square which makes them fairly trivial. $\endgroup$
    – quarague
    Commented Apr 30 at 8:55
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    $\begingroup$ Ok the second starred puzzle is one tough SOB how is it even possible? I think it is worthy of a post in and of itself. $\endgroup$
    – PDT
    Commented Apr 30 at 14:31
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    $\begingroup$ @PDT if you read the text, advanced puzzles are only advanced because they are RELATIVELY hard. Puzzle 5 is advanced because it really is a jump in execution from the previous 5, but it doesn't mean it's hard. $\endgroup$
    – Omega_3301
    Commented Apr 30 at 23:15
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    $\begingroup$ @SunnyLu any tips on how to solve the octagon with the hole in the middle. Like do I diagonals. $\endgroup$
    – PDT
    Commented May 1 at 12:11

3 Answers 3

4
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Here are my partial answers. With some differences from PDT's.

Fold on the blue lines.

Row 1, #1 to #5

enter image description here

Row 2, #6 to #10

enter image description here

Row 3, #11 to #15

enter image description here

Row 4, #16 to #20

enter image description here

Row 5, #21 to #25

enter image description here

PS: I removed a wrong solution and fixed another one.

Then I had a look at the solutions, so I will stop here.

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  • $\begingroup$ Ahh shoot I did think of that for 10!!! It’s just the paper had made the rectangle look seriously uneven!! $\endgroup$
    – PDT
    Commented May 19 at 17:32
  • $\begingroup$ I also had to use paper for #10. $\endgroup$
    – Florian F
    Commented May 19 at 18:45
  • $\begingroup$ good job for 10!!! finally :) please redo puzzle 20 for a more elegant solution lmao (it's like puzzle 10) and hmmm feedback here may force me to make puzzle 21 advanced too, i've seen a ton of people get stuck on that. funny: all of them are multistep, except for 13 (which i seriously thought it was easier than 14, so maybe i need to change the order too) nevertheless, good job! i appreciate the dedication to this one post, especially since it contains a lot of puzzle for a typical pse post (i considered splitting up but i would overload the question menu so i decided against it) $\endgroup$
    – Omega_3301
    Commented May 20 at 11:47
  • $\begingroup$ I already looked at your solutions. So I could amend #20 but it would be just copying yours. $\endgroup$
    – Florian F
    Commented May 20 at 17:57
  • $\begingroup$ I erased #13 because of a silly mistake. It didn't make a rectangle. I would probably have found it. This being said, #14 was one of the easy ones for me. $\endgroup$
    – Florian F
    Commented May 20 at 18:03
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For the top half this is my progress so far:

Row 1 (complete)

For puzzle 2, the folds are in order of ROYGBIV: enter image description here

Row 2: Last is still unsolved and also added steps for 1 and 4 for clarity:

enter image description here
1.
enter image description here
4.
enter image description here

Row 3 (complete)

1.
enter image description here
2.
enter image description here 3.
enter image description here 4.
enter image description here
5.
enter image description here

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  • $\begingroup$ Any tips on how to solve the octagon it’s really tough…? $\endgroup$
    – PDT
    Commented May 16 at 15:17
  • $\begingroup$ Reduction is your friend $\endgroup$
    – Sny
    Commented May 16 at 23:58
  • $\begingroup$ wow cool! you found a unintended solution for puzzle 11, but that's fine :) it's related to puzzle 10, so once you're done with that maybe try go back to find the intended solution :) $\endgroup$
    – Omega_3301
    Commented May 17 at 14:43
  • $\begingroup$ @Omega_3301 I have been trying to solve it for a while now. To no avail! $\endgroup$
    – PDT
    Commented May 17 at 15:10
  • $\begingroup$ @Omega_3301 I don’t see how there are only straight line folds! $\endgroup$
    – PDT
    Commented May 17 at 15:19
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My (still incomplete) set of solution.
I assume the 'simultaneous folds' at 10 and 30 are allowed?!

(note: blue folds before green)

enter image description here

Nr 10 more detailed:

enter image description here

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  • $\begingroup$ Happy to see new variations for some of them. $\endgroup$
    – Florian F
    Commented May 20 at 11:06
  • $\begingroup$ woah... i definitely didn't expect that for puzzle 10... i knew it was possible, but i just thought nobody would come up with it until puzzle 30! good job! and as for the 3 uncompleted puzzles... yes they're hard, and you don't need to feel sad for not solving them. if you have a discord we could discuss more about them! edit: wait could you recheck your puzzle 10 solution? i think it's incorrect $\endgroup$
    – Omega_3301
    Commented May 20 at 11:43
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    $\begingroup$ @Omega_3301 I added more detail for 10; seems OK to me. $\endgroup$
    – Retudin
    Commented May 20 at 13:59
  • $\begingroup$ @Retudin ahhh i didn't see the diagram properly; it's definitely correct! once again good job for finding this solution (this idea was meant to be reserved for puzzle 30) $\endgroup$
    – Omega_3301
    Commented May 21 at 6:18

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