Hooray! I’ve finally been doing this long enough to be able to make a classic “ate pie” pun! I probably wouldn’t have expected to keep making hunts for this long when I started. I’m 24 now, so that means I’ve been doing this for a whole 1/3 of my life! (Well technically, my life hasn’t been exactly an integer number of years long, so that denominator should really be a number slightly larger than 3… and speaking of numbers slightly larger than 3:)

The Greek letter directly after omicron is pi, so now that the omicron wave seems to have mostly subsided (speaking optimistically), that means it’s time for Pi Day! I much prefer pi-related sinusoidal waves to the omicron sinus-related wave.

P.I.HUNT 8 is jigsaw puzzle themed. I’ve found it funny that the canonical icon for puzzles seems to be a jigsaw puzzle piece, and googling “puzzle” returns almost entirely results about jigsaws, yet puzzle hunts rarely have jigsaws in them at all.

Actually, when I say “P.I.HUNT 8 is jigsaw puzzle themed”, I actually mean “P.I.HUNT 8 is a jigsaw”! The original plan was going to be to laser cut it and have a physical jigsaw (which is why everything in the hunt was made with vector graphics), but that ended up being expensive, and I’d like to keep P.I.HUNT as a free thing to play. Plan B was going to be using some online collaborative site like Google Jamboard, but each one I looked at lacked some feature that was important (e.g. in Google Jamboard, you can’t select multiple pieces at once, which is extremely important for solving a jigsaw puzzle.)

I ended up making a multiplayer Unity game, which is what’s linked below. There’s also a MANUAL.txt which I highly recommend reading through the entirety of. I think solving with a team would be fun (but it’s still optional, of course) partially because the puzzles skew somewhat harder than normal, but also because jigsaw puzzles are always fun to do collaboratively 🙂

This program was a major last-minute hacky operation, and I’m a little worried about it totally breaking. I’ve never made a game that requires connecting through the internet before, and multiplayer netcode is always scary, but hopefully it goes well! If you want to tell me bugs, or have other things you want to say, you can email me at jack[dot]l[dot]lance[at]gmail[dot]com or on Discord as Jack Lance#3467. (I like to hear from people, which is why I’ve used email for answer checking in the past, but it turns out I’m bad at responding to emails and making people wait for a response before they can continue a hunt feels bad.)

One last thing: I included a build for Mac because Unity has an option to make a build for Mac, so hopefully everything just automatically works, but I’ve only tested it on PC. (EDIT: One solver just told me that it originally didn’t work, but they got it to work by running chmod +x PIHUNT.app/Contents/MacOS/Pi in the terminal, and another says a more user-friendly way to open the application on Mac would be to right-click the application, click Show Package Contents, click MacOS, then click that file. If it gives a warning, go to System Preferences > Security and Privacy and allow it to open.)

ERRATUM: The piece that says “1B” on it is an error. When you see this piece, you can cross out the “1B” on it.




We’ve gone about another 2 pi radians around the sun again, which means it must be time for P.I.HUNT again! This year is the 22nd year of the century, and the 7th P.I.HUNT, which means that my average time for hunt production this century will be 22/7 by the end of this year, the common approximation for pi! 🙂 This is definitely a natural statistic to look at and not contrived at all to make this year’s Pi Day seem special like I do every year. If that’s not special enough, there’s something else interesting that happened this year (in some time zones, at least.) There were two notable occurrences today, as close as is possible for them to occur without overlapping. Namely, Pi Minute (which has the first 6 digits of pi), is 3/14, 1:59 AM, and Daylight Savings Time begins 3/14, 2:00 AM.

About this year’s hunt: I was feeling very demotivated about writing hunt puzzles at one point during the year, and I was thinking about cancelling the hunt. But I ended up deciding not to cancel it, and take the pieces of puzzles I had written and combine it into a full hunt. Something I notice myself doing sometimes is trying to raise the bar for myself over and over, until it gets to a point where I can’t pass over it anymore, and I think this is a good thing to notice when it’s happening and relax my expectations. (More specifically, I really am happy with how P.I. 4 and P.I. 5 turned out, so if you haven’t seen those you might also want to check them out!) As a result of this, the puzzles ended up a little scattered in some places in terms of varying in scale or difficulty level. Overall, I’m quite happy I ended up finishing this hunt, and I still think I made something I can be proud of. 🙂

The theme of the hunt is very vaguely Scooby-Doo themed (basically that’s just the theme of the meta.) There are 8 puzzles this year, and a meta. I’ll send the meta once you have solved at least 5 of the puzzles. Email me at jack[dot]l[dot]lance[at]gmail[dot]com to confirm your answers, or for other comments/hint-requests/questions.

Asking the right questions

ǝƃɐnƃuɐ˥ lɐsɹǝʌuᴉ-u∩



Cutting Corners

Pronounced Troubles


Knots & Crosses




It’s Pi Day again, and what a nice looking pi date it is. 3/14/20 has every digit from 0 to 4 exactly once, meaning it can represent a permutation. If only there was a nice Greek letter that we could use to denote a permutation. 🙂

It feels like a good time to be running a completely not-in-person online-only event. If other events you were planning to go to have cancelled, or you are planning to being inside for a while, hopefully this hunt can provide some amusement.

That being said, this year’s P.I.HUNT is not going to be as big as the last few years. (P.S. This isn’t a bluff where there’s secretly a second round of puzzles after you get through the first set. I did legitimately make less puzzles this year.) After last year, many people sent me advice (which also just so happened to be the final meta answer) about what to do if I’ve been working too much with not enough play, so this year I decided to scope down & not work too hard. I was hoping to make 6 puzzles for P.I.6, but I guess I took it too easy, and only managed to finish 5. Hopefully this won’t affect things too much and you’ll still be able to figure out most of the meta without the 6th puzzle.

If you did 2019’s MIT Mystery Hunt, you’ll remember it was about combining various pairs of holidays. There was even a Pi Day Town! If it were up to me, Pi Day Town would have been in the center and connected to everything else, so I decided to take things into my own hands and do a Halloween/Pi Day mash up this year. The puzzles are themed around various fears, and once you solve the puzzles, you’ll be able to determine “What is my biggest fear?” (You won’t need any additional info for the meta. You can contact me to confirm answers if you want (jack dot l dot lance at gmail dot com) but there’s nothing to unlock.)

So, that’s probably enough introduction. Here’s PUMPKIN PI HUNT:


The news

The Ring





Hello! Last year was the 30th anniversary of Pi Day, which makes this year the 31st. That’s got the first two digits of pi, rather than just the first one, and so is even more of a milestone and clearly not just me making up reasons to call every Pi Day special. (I’m not the only one…) I may have gone a little insane making the puzzles this year, I’m sure my mental state wasn’t too affected though. I can’t wait for you all to see what I’ve been working on during the past year.

There are 14 non-meta puzzles, all of which start off unlocked and are linked below. I’ll send the first meta once you get at least 4 answers that go to it, and it will answer the question “What should Jack do if he’s gone crazy from work?” and the second meta once that’s solved and you get at least 4 answers for it, which will answer the question “Now that Jack’s followed your advice, rather than dull, how is he feeling?” (I will let you know which puzzles go to which metas when you unlock them)

Email me at jack[dot]l[dot]lance[at]gmail[dot]com to confirm your answers. You can also email if you get stuck and want hints, or just any comments, errata, or questions. Also, feel free to work individually or as a team, and solve now or anytime after now.

So, without further all, work and no play makes Jack. A dull boy all work and no play makes Jack a dull boy:

All 1
Work And
Nº Play
Makes, Jack, A, Dull
Jack A**
Dull Boy
All% Wo. Rk.
– and |, no /
Play Makes
Jack A Dull Boy


It’s the day right before the Ides of March, which you might also call Pre-Ides day, or P.I. day for short! In fact, according to Google, it’s the 30th anniversary of Pi Day, so a special one indeed.

This year’s P.I. HUNT is themed around Gravity Falls, though you don’t need to have any Gravity Falls-specific knowledge in order to solve it. In fact, you don’t need any outside knowledge to solve it! That means both that you don’t need a computer to solve it, so it has no trivia, no codes like braille, morse, semaphore, etc., and also that it’s intended to be solved completely without a computer (except maybe looking up words you don’t know, or the like). See more info about printing below.

(Note that you can solve if you haven’t watched Gravity Falls, or have watched it, but if you’ve started watching and intend to finish, there are spoilers past this point. Also, the show finished airing more than two years ago! What are you doing? Go finish it!)

In the show, it was believed that Stanford Pines had written 3 journals about his findings in Gravity Falls. However, it was recently discovered that there was some more pages that had been unaccounted for, meaning the actual number of journals was a number slightly larger than 3…

It is VERY HIGHLY RECOMMENDED that you print the journal out. You should print it double sided, and as you go through it, flip pages from your right to your left, as if you were reading a book. I also recommend using a pencil, through if you write on the pages with pen, (or ruin them for any other reason…) the good thing about it being a pdf is that you can just reprint those pages.

Because lots of printers are weird and different, the printing might be the most daunting puzzle. I’ve provided a test page below. You can print the test page to make sure the printing will work okay before printing the journal. You don’t need color printing, and also there is a margin worked into the document so you don’t need edge-to-edge printing. When you print the test page double sided, the dot should be exactly in the center, and the asterisks should line up when you hold it to the light (if they are off by a little, that’s okay). The arrows shouldn’t be cut off, and should be as close to the edge of the page as they appear in the pdf (a quarter inch). Sometimes the printer tries to add an extra margin, so if there’s an option to set margins to 0, or set the scale to 100%, or an “Exact Size” option, you should select that. I had some troubles when opening the pdf in Chrome and printing it from there, so you should try saving it to your computer, and printing it using that menu. If you’re having trouble with the margins (printers are weeeeird!) you can email me and I can try to help.

You can email me (at jack[dot]l[dot]lance[at]gmail[dot]com) if you have found an error, are stuck and want hints, or have any other comments, but because there’s no unlocking this year, you don’t need to email for anything besides the final answer.

Test Page (not a puzzle)



If you’ve been watching the countdown on the right, then you know that it’s time for P.I. HUNT number 3! That’s special because it’s the closest number to pi there’s going to be unless I decided to make a hunt for May 3rd (.1415… of the way from P.I. HUNT 3 to P.I. HUNT 4.) This year is also special because it shares the same starting date as another puzzle hunt that you should definitely also check out!

As you know, I’m recruiting you to help with the case of Mr. Boddy’s untimely death, which we at the police force believe to be a murder. The reason I came to you is because I heard you’re used to solving unusual cases, like that recent kidnapping by Mystereo Cantos, and some of the evidence is… well… it’s not what I’m used to dealing with.

I’ve gathered up all of the suspicious materials found in the mansion after the body was found and taken and documented pictures. None of the suspects have been identified yet, so I’m tentatively giving the suspects codenames after what they left behind: Suspect Scarlet, Suspect Mustard, Suspect Green, Suspect Peacock, Suspect White, and Suspect Plum. You can see the objects in the picture below, but make sure to also click on the links to pdfs below which contain more detail about exactly what I found at the scene of the crime.

Once you find someone you believe any of the suspects in this case, send it to me at jack[dot]l[dot]lance[at]gmail[dot]com to receive some of the more confidential puzzling evidence.

Suspect Scarlet

Suspect Mustard

Suspect Green

Suspect White

Suspect Peacock

Suspect Plum

P.I. Hunt 2

Note: While these puzzles were originally published on Pi Day, there’s nothing time specific, so feel free to solve and submit puzzles at any time.

As long as you don’t swear by using tau, a controversy which some people seem to constantly get irrationally angry about, then happy pi day! If you’ve finished eating some celebratory pie while watching Life of Pi (played with a Raspberry Pi, of course) to better pi-bond with your friends, that means it must be time for the second installment of P.I. Hunt!

Last year dealt with determining the players for a made-up game, but this year, you get to jump into the action and be the player for a made-up game! You begin as an adventurer in the enchanted woods. You will have to solve puzzles to help you find items, and defeat any obstacles in the way of your adventure. The initial map of the woods you can explore is shown here:

The “S” is your starting cell. To the west, there is an edge of the forest.

To the north, There is a large expanse of desert, and a sign of parched parchment which dryly tells you that it’s far too far and arid for you to cross.

To the east, there is an ice demon. He looks at a list, and says something about his literally cool club being “over capacity” although you swear you just saw him let two snowwomen through.

To the south, there is a sea with a boat blocking the path preventing you from swimming past. It has white paint on it that reads “UNSINKABLE WIZARD SAILBOAT”.

When you have solved a puzzle, you can submit your answer by sending it to me at jack.l.lance@gmail.com. You should also contact me like this if you find any errata, or just want to make a remark or ask for help. You will only be able to unlock new puzzles, so submit answers whenever you solve a puzzle. (If you cannot solve any puzzle and have not seen P.I.HUNT 1, you may want to start with it, as it had an easier initial round for people with less experience to puzzles.)

Leveling Up

Artificial Intelligence


Power Ups

Concept Art


Note: It isn’t Pi Day anymore, but none of these puzzles are time specific, so feel free to solve these puzzles and send me your answers.

Welcome to P.I.HUNT!

If you live in Belize, Canada, Kenya, The Philippines, or The United States, then the day I’m posting this is written as 3/14/15, which has a whole 5 digits of π! This is, as Vi Hart puts it, “much closer to infinity then the usual 3.”

I know that many people that visit my site have differing levels of experience with puzzle-hunty puzzles, so I made two rounds of puzzles. There are 8 puzzles in the first round, called “player” puzzles (the reason for which will be revealed later) which are below. These are on the easier side, and also come with 8 supplemental paragraphs of puzzle hunting advice, one for each puzzle.  After finding the answer to any puzzle, E-mail it to me at jack[dot]l[dot]lance[at]gmail[dot]com to unlock puzzles.

In addition, If you find some erratum, or just want a hint, you can also E-mail me for that.

Here are the supplements which correspond to the puzzles, but not necessarily in the same order, and here are the eight player puzzles:

Duck and Cover


Weird-Looking Creatures

Identity Matrix

Time Codes


Out of the Ordinary

Index Cards


Welcome to the Puzzling Internet HUNT 0, mostly a test run for the hunt which obligatorily will start on 3.14.15, so what should I call this preliminary hunt? When you have an idea (which you will get by solving the meta), or any answers along the way, send me an e-mail at jack.l.lance@gmail.com to unlock the next puzzle and a piece of the meta.

Note: I don’t necessarily live on my computer all the time, so don’t be alarmed if I don’t respond right away. I will guaranteedly respond to you within a day. 

There are 4 puzzles and a meta:



\Pi   \Pi   \Pi

\pi radians