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Corvallis Library Puzzling Puzzle Mystery Tour Mystery Cache

Hidden : 8/2/2026
Difficulty:
5 out of 5
Terrain:
1.5 out of 5

Size: Size:   small (small)

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Geocache Description:


This cache is located within the Benton County Public Library, 645 NW Monrow Ave. Please check here for hours of operation to make sure they are open or call 541-766-6793. The posted coordinates are a great place to park to start your journey. Placed with permission by the Benton County Library Deputy Director.

 


Who doesn't like puzzles? NOBODY!! I have been lucky enough to create many puzzles over the years, some of which are overly simple (The Easiest Puzzle Ever!-GC44Y4D) and some were unintentionally tough (Math Squares-GC218HG)! So this is a puzzle which incorporates many of the puzzles I have already published plus maybe some new puzzle ideas I haven't had a chance to publish (yet).  As you work through each puzzle, make note of each of the solutions as they will be entered into certitude to reveal the final location plus a strong hint. This is a difficulty 5 puzzle! Not everything you will need can be found outside the library and on this cache page though I assure you that there shouldn't be any programming or retasking of satellites to complete this puzzle! This is also not a park and grab! Plan on taking some time. Finally, the library staff knows nothing about how to solve this puzzle but they are aware of the cache. Please don't ask them for hints on solving.

 

Head to the following coordinates by walking around the outside of the library and answer the following questions. Then head on in to work on the solutions! The answers will be used in some of the puzzles below:


A =  Go to this location, N44 33.968 W123 15.877. There is a yellow sign there with 2 words on it. How many letters are in that longest word?

 

B =  At N44 33.968 W123 15.843, there is a white sign with lots of numbers and letters of various sizes. At the bottom of that sign there are numbers in this format: X.XX.XXX.  What is the 4th digit.

 

C =  There is a sign at 10T 479032 4934789. At the bottom of this sign there are numbers in this format: X.XX.XXX.  What is the 3rd digit.

 

D =  At this location, N44 33' 58.08" W123 15' 50.58" there are numbers in this format: X.XX.XXX at the bottom of a sign.  What is the 1st digit.

 

E = At N44 33.959 W123 15.843 there are three white signs. What is the very last number written on the first sign (left to right)?  (Lower right corner on leftmost sign.)

 

F = At this same location, on the far right sign, there are two words in the title. How many letters are in both words?

 

G = Also at this location, how many lines of text are written on the middle sign?

 

H = Go to N44 33.928 W123 15.871. There are two signs here. On the top sign, how many total numbers are there? (Just 1 digit.)

 

I = On the same sign as H, what is the last number?  (Bottom right.)

 

J = At 10N 478980 4934718 there is a plaque. There is a date on the very top.  What is the 3rd digit?

 

K = At this same location, 10N 478980 4934718, what is the 4th digit of the date at the very top?

 

L = The number of letters in the Magic Word? A magic word is believed to possess supernatural powers, or produce magical effects. (The magic word is found at the event Another Quiet, Barely Balanced not 35 Minute Movie (GCBMX12)

M = The first digit of the Magic Number. A magic number is believed to possess supernatural powers, or produce magical effects. (The magic number is found at the event Another Quiet, Barely Balanced not 35 Minute Movie (GCBMX12)

N = The second digit of the Magic Number. A magic number is believed to possess supernatural powers, or produce magical effects. (The magic number is found at the event Another Quiet, Barely Balanced not 35 Minute Movie (GCBMX12)

P = The fourth digit of the Magic Number. A magic number is believed to possess supernatural powers, or produce magical effects. (The magic number is found at the event Another Quiet, Barely Balanced not 35 Minute Movie (GCBMX12) 

Q = The third digit of the Magic Number. A magic number is believed to possess supernatural powers, or produce magical effects. (The magic number is found at the event Another Quiet, Barely Balanced not 35 Minute Movie (GCBMX12)

 

 


 

Puzzle #1: Fallen Letters

You are looking for a three (3) digit response.


Puzzle #2: Sudoku-with a twist!

 

 

You are looking for a nine (9) digit answer, starting from lower left corner diagonally to the upper right corner.

 


Puzzle #3

You are looking for a three (3) digit answer


 

Puzzle #4: Tricky Math

1+3=4

12-1=11

17+13=151

50=9

1233/3=98

4=-3

21+33+3=9

1+2+3+4+5+6+7=8

5555/5=11

You are looking for a 10 digit answer.

 


Puzzle #5: Word Search

 

 

You are looking for 4 word phrase which you will need to find the value of.

 

 


Please enter the answers to the above puzzles in order (should be all digits) separated by a dash (-) So it should look like this: XXX-XXXXXXXXX-XXX-XXXXXXXXXX-XXX

 

You can validate your puzzle solution with certitude.

Additional Hints ()

Bsgra gvzrf zntvp unccraf va cerivbhf riragf. Lbh zvtug jnag gb purpx gurer vs lbh ner ybbxvat sbe n yvggyr zntvp.

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)

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