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Bongard
neurology
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bolt
HRT
chess
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border_all
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extension
Miscellaneous
calculate
Quant
deployed_code
Spatial
book_3
Verbal
domino item
neurology
Fluid
help
Unsolved
write AB
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
puzzle
deployed_code
Spatial
check_circle
Solved
puzzle
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
4 puzzles
neurology
Fluid
help
Unsolved
1, 49, 162, 5364, ? [125-135 level] 123456789, 13456789, 1345789, 134578, 13578, ? Explain. [145-150 level] 194938764, 5, X, X, 7654, 45678, ?, ?, ? [150-155 level] 493186758, 824915731, 591848734, 118393749, ?, ? [160 level]
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
#001
extension
Miscellaneous
help
Unsolved
33344477777778 55533833777 2555744222338 4447777 ?
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Pattern Puzzle
border_all
Matrix
check_circle
Solved
Just write down your answer. For example: if you think answer is row1: circle circle star star row2: diamond circle diamond circle your answer will be 22443232
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
2 Puzzles
neurology
Fluid
help
Unsolved
9285174, 9, 85, 8, 17498, 7, ?, ? 392184575604: 392, 18, 812, 2, 184575, ?, ?
Fun:
1/6
Difficulty:
1.5/6
Novelty:
0.5/6
Ambiguity:
1.5/6
Avg. Time: 1-5 min
·
1 rating
Spatial item
deployed_code
Spatial
check_circle
Solved
spatial item
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Deduction puzzle
chess
Logic
check_circle
Solved
Good luck with this one.
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Hard logic puzzle
chess
Logic
check_circle
Solved
Seven cards exist, numbered 0 through 6. Alice is dealt 3 cards Bob is dealt 3 cards Eve is dealt 1 card All three know the distribution (3, 3, 1) but not each other's hands. Eve can hear everything Alice and Bob say. Alice and Bob must exchange public announcements — statements Eve fully hears, such that: - Alice and Bob both learn each other's complete hands - Eve gains zero information about any card she doesn't hold — meaning for every card in Eve's hand's absence, she cannot determine with any certainty whether Alice or Bob holds it Can Alice and Bob do this? If so, how? IMPORTANT NOTE: "zero information" is strict. It's not enough that Eve can't be certain — after all announcements, Eve must have no probabilistic advantage whatsoever on any card. She must be in a 50/50 state on...
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Easy sequence
neurology
Fluid
check_circle
Solved
A, H, I, ?, O, T, U, ?, ?, X, ?
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Item made by my friend
border_all
Matrix
check_circle
Solved
Explain the reasoning
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Easy Numerical Puzzle
neurology
Fluid
check_circle
Solved
1x3=4, 2x8=25, 2x4=9, 10x10=?
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
solving/decoding x;19&tyLQA%7e2T=hvo
chess
Logic
help
Unsolved
i need help with solving or decoding " need help solving/decoding x;19&tyLQA%7e2T=hvo " , this is the only thing i have to work with, it's a text displayed in an mmo game (pixel worlds) so i'll have the correlation with the game written after explaining what i think x;19&tyLQA%7e2T=hvo could be so far i think it's some sort of web address (so like those arg videos it could lead to a youtube video or some website) but so far i haven't gotten anywhere with that besides some possible links that don't work i think such as https://youtube.com/watch?v=tyLQA-2Thvo, https://youtu.be/tyLQA-2Thvo, https://pastebin.com/tyLQA2T, https://imgur.com/tyLQA2T now the correlation with the game itself is that the prize is in a display box and you can put text on display boxes which the text only says x;19&...
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
spatial puzzle
deployed_code
Spatial
check_circle
Solved
u can answer numerically in the order from top to bottom
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Coding puzzle
extension
Miscellaneous
check_circle
Solved
In a certain language "STAR" is coded as 44 and "MOON" coded as 58 how will "MARS" be coded in that language.
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
spatial puzzle
deployed_code
Spatial
help
Unsolved
spatiall
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
spatial
deployed_code
Spatial
help
Unsolved
tell what shape is red colored rounded square
Fun:
3.5/6
Difficulty:
1/6
Novelty:
3/6
Ambiguity:
1.5/6
Avg. Time: Under 1 min
·
1 rating
A difficult verbal bongard.
import_contacts
Bongard
help
Unsolved
Instructions: The problem consists of a five-element column. The elements in a column have a common feature, and the common features of two columns displayed next to each other contrast, but need not be exact opposites. For each problem, explain the common feature.
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
spatial item
deployed_code
Spatial
check_circle
Solved
find missing shape
Fun:
4.5/6
Difficulty:
1.5/6
Novelty:
2.5/6
Ambiguity:
0
Avg. Time: Under 1 min
·
1 rating
Puzzle for Moggers
chess
Logic
check_circle
Solved
12453, ?, 1111112453, 1111260978 If you want, state the difficulty of the puzzle on a scale from 1 to 10. Feel free to make any other suggestion In my opinion, 7/10. It is a bit more easier than the other puzzles I posted.
Fun:
2/6
Difficulty:
1.5/6
Novelty:
2.5/6
Ambiguity:
5/6
Avg. Time: 1-5 min
·
1 rating
spatial item
bolt
HRT
check_circle
Solved
find missing shape
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
QUANT
calculate
Quant
help
Unsolved
A warehouse printer makes an 8-digit shipment label by joining six pre-printed strips end-to-end. Four strips have one digit on them: 0, 1, 2, 9. Two strips have two digits on them: 19 and 20. Each strip must be used exactly once, and the final label is invalid if its first digit is 0. How many valid labels can the printer produce?
Fun:
3/6
Difficulty:
4.5/6
Novelty:
0
Ambiguity:
0.5/6
Avg. Time: 5-15 min
·
1 rating
Bondarg
import_contacts
Bongard
check_circle
Solved
yk what to do
Fun:
4.5/6
Difficulty:
0.5/6
Novelty:
3/6
Ambiguity:
0.5/6
Avg. Time: Under 1 min
·
1 rating
Fairbanks Again
import_contacts
Bongard
check_circle
Solved
What is common to the left and what is common to the right?
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Numerical Puzzle
chess
Logic
check_circle
Solved
9, 12, 25, 1138, ?, 136364 Note: The item in question should be about 7.5/10 in difficulty, maybe 8.
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
MATRIX PUZZLE
border_all
Matrix
check_circle
Solved
Matrix puzzle for you to solve.
Fun:
4/6
Difficulty:
2/6
Novelty:
2.5/6
Ambiguity:
0.5/6
Avg. Time: Under 1 min
·
1 rating
The harder "hardest riddle"
chess
Logic
check_circle
Solved
As Selene was traveling along a forest road near the borders of the Worldwound, she heard strange voices echoing through the trees. Curious despite the danger, she climbed a twisted tree overlooking a moonlit clearing. From her perch, she witnessed a most unusual gathering. Thirty-one crusaders were seated around a massive war table carved from stone. Before them stood a short man with a neatly trimmed white beard, clad in the crimson-and-gold robes of a senior scholar of Mendevian Crusaders. He raised a gloved hand, and the murmuring ceased. Then he began one of the strangest addresses Selene had ever heard. “Welcome, champions of the Fifth Crusade. The sharpest strategic minds in all of Golarion have assembled here tonight. We stand at the edge of the Worldwound, where reason must be s...
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Bongard
import_contacts
Bongard
check_circle
Solved
What is the rule on the left and what is the rule on the right? credit to Jago Collins
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
THE SEVEN PRODIGIES IMPOSIBLE PUZZLE
chess
Logic
check_circle
Solved
At an elite academy for gifted students, seven mathematical prodigies are attending a private interdisciplinary program Each girl has a unique: Name Age (9, 10, 11, 12, 13, 14, 15) Musical instrument Favorite mathematical field Favorite color Country of origin No two girls share any attribute within a category. Your task is to determine the complete profile of each prodigy. Names: -Ariadna -Beatriz -Clara -Dafne -Elena -Fátima -Gabriela Instruments: -Piano -Violin -Cello -Harp -Oboe -Flute -Harpsichord Mathematical Fields: -Number Theory -Algebraic Geometry -Topology -Combinatorics -Mathematical Logic -Analysis -Graph Theory Favorite Colors: -Red -Blue -Green -Black -White -Purple -Gold Countries: -Japan -Germany -Brazil -Hungary -India -France -Canada Clues: -The 15yo plays neither a str...
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
spatial puzzle
bolt
HRT
check_circle
Solved
no need to draw/describe shape, just tell the logic. Also, red hexagons are part of the puzzle not something you need to solve. Rounded rectangles are for putting in the answer.
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
The prisoner chessboard puzzle ( only for those who don't know the theory that trivializes this problem)
chess
Logic
help
Unsolved
Puzzle in the image. Please don't attempt this if you have learned the idea for this puzzle before. It's not for you.
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Guess the number puzzle
chess
Logic
check_circle
Solved
Guess the number puzzle
Fun:
6/6
Difficulty:
2/6
Novelty:
1/6
Ambiguity:
0.5/6
Avg. Time: 1-5 min
·
1 rating
Subtiles 2 - Janestreet Feb 2026
chess
Logic
check_circle
Solved
This is an ongoing Jane Street puzzle. You can submit the original solution here https://www.janestreet.com/puzzles/current-puzzle/ For the cognitive metrics answers, we will ask a slightly different thing to protect the answer for this month. Problem statement: "Place positive integers in some of the cells above, so that the grid contains one 1, two 2’s, three 3’s, and so on, up to N N’s. (For some N.) For any integer K in the grid, the cells labeled K must form an orthogonally connected region (a “K-omino”). Furthermore, for each K > 1 the K-omino must “contain” the shape formed by the (K−1)’s. (Rotations and reflections are allowed.) Some of the cells have been labeled, but unlike our previous Subtiles, we have used variables to obscure those values. (As in the example, at the bottom...
Fun:
4/6
Difficulty:
3.5/6
Novelty:
4/6
Ambiguity:
0.5/6
Avg. Time: 2-6 hours
·
1 rating
Fairbanks Bongard
import_contacts
Bongard
check_circle
Solved
What is the rule on the left and what is the rule on the right?
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Numerical rule induction
extension
Miscellaneous
check_circle
Solved
8 x3 =14 13 x 8 = 4 and 9 x 1 = 54 then whats 7x3?
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Puzzle
neurology
Fluid
check_circle
Solved
791024938; 9102, 102493, -, -, 493879, 9, ?, ?, ?
Fun:
1/6
Difficulty:
3.5/6
Novelty:
2.3/6
Ambiguity:
3.8/6
Avg. Time: 15-30 min
·
3 ratings
spatial puzzle
border_all
Matrix
help
Unsolved
describe shapes that are missing and position.
Fun:
2.5/6
Difficulty:
3.3/6
Novelty:
3.8/6
Ambiguity:
3.3/6
Avg. Time: N/A
·
2 ratings
A Not-So Exceptional MR Item
border_all
Matrix
check_circle
Solved
Snoozefest
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Unique Dominoes Item
neurology
Fluid
check_circle
Solved
What best replaces the question mark? Explain your reasoning.
Fun:
2/6
Difficulty:
0.5/6
Novelty:
2.5/6
Ambiguity:
1/6
Avg. Time: Under 1 min
·
1 rating
Matrix
border_all
Matrix
help
Unsolved
Matrix
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Nice Matrix
border_all
Matrix
check_circle
Solved
What option fills the empty square?
Fun:
3/6
Difficulty:
2/6
Novelty:
4/6
Ambiguity:
1/6
Avg. Time: 1-5 min
·
1 rating
What will be the least picked option in this poll?
chess
Logic
help
Unsolved
Select the option rather than commenting an answer (I will update the key as attempts come in)
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Puzzle 3
neurology
Fluid
help
Unsolved
019485327: , ?, , 65, 5, ?, ?, 4
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Cool Matrix
neurology
Fluid
check_circle
Solved
Select the correct option
Fun:
4/6
Difficulty:
3/6
Novelty:
3/6
Ambiguity:
1/6
Avg. Time: 1-5 min
·
1 rating
puzzle 2
neurology
Fluid
check_circle
Solved
179458362, 7, ?, 179458362, ?, 83621, ?, ?, 362179, 94
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Very Creative Puzzle From Unknown Test
extension
Miscellaneous
check_circle
Solved
What number best replaces the question mark? Also, if anybody has any idea what test this puzzle comes from, PLEASE tell me
Fun:
1/6
Difficulty:
1/6
Novelty:
2/6
Ambiguity:
3/6
Avg. Time: 1-5 min
·
1 rating
Puzzle
neurology
Fluid
help
Unsolved
291875634, 4236751, ?, ?, 6, 6 puzz
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Numerical Matrix
border_all
Matrix
check_circle
Solved
Autoscoring requires writing the missing number in the matrix, not the letter for the option
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
interesting
border_all
Matrix
check_circle
Solved
interewsting
Fun:
3/6
Difficulty:
2/6
Novelty:
4.5/6
Ambiguity:
5/6
Avg. Time: Under 1 min
·
1 rating
cool matrix
border_all
Matrix
check_circle
Solved
cool matrix
Fun:
2.8/6
Difficulty:
2/6
Novelty:
2.3/6
Ambiguity:
3/6
Avg. Time: Under 1 min
·
2 ratings
Matrix
border_all
Matrix
help
Unsolved
matrix u can enter your answer in the form of binary don't use space tho
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
22 Difficult Analogies
book_3
Verbal
check_circle
Solved
rules: googling is limited to looking up words that strictly appear in the list that you may not know the definitions of. This test is more crystallized than relational/analogical 1. SOUTH : NORTH :: AUSTRAL : ? 2. GEORGE ORWELL : BLAIR :: DR. SEUSS : ? 3. SHAPING : MOULDING :: SHEDDING : ? 4. ABBOTT : COSTELLO :: ? : GARFUNKEL 5. BEAR : URSINE :: FISH : ? 6. UPPER SPACE : ETHER :: LOWER : ? 7. GREECE : ZEUS :: BABYLON : ? 8. DERIVATION : INTEGRATION :: REDUCTION : ? 9. 1 : SEMIBREVE :: 8 : ? 10. ROLLING INTO A BALL : VOLVATION :: RAISING HAIR :: ? 11. INGESTION : INJECTION :: POISON : ? 12. PAINTING : PORTRAIT :: SCULPTING : ? 13. CANDIDE : CUNÉGONDE :: FAUST : ? 14. 9 : NANOMETER :: 10 : ? 15. BACK OF EYE : OPTIC NERVE :: FUNNY BONE : ? NERVE 16. MORTICE : TENON :: MORTAR : ? 17. 2 : DI...
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
hard puzzle 2
border_all
Matrix
help
Unsolved
comment reasoning
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
hard matrix puzzle
border_all
Matrix
check_circle
Solved
good item
Fun:
3.5/6
Difficulty:
3.5/6
Novelty:
4.3/6
Ambiguity:
2/6
Avg. Time: 1-5 min
·
2 ratings
Find the value which best completes the series.
neurology
Fluid
help
Unsolved
6, 15, 41, 113, ?
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Bongard by Bongard
import_contacts
Bongard
check_circle
Solved
What is the common rule for the left side and what is the rule for the right?
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Matrix
border_all
Matrix
check_circle
Solved
Solve
Fun:
2.5/6
Difficulty:
2/6
Novelty:
2/6
Ambiguity:
0.5/6
Avg. Time: Under 1 min
·
1 rating
Cool unique puzzle
neurology
Fluid
check_circle
Solved
List what goes in the empty slots in order
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
Choose the image that completes the pattern
neurology
Fluid
check_circle
Solved
oy vey
Fun:
3.8/6
Difficulty:
2.8/6
Novelty:
3.8/6
Ambiguity:
1/6
Avg. Time: 1-5 min
·
2 ratings
Numbtor
neurology
Fluid
check_circle
Solved
5'6''*9'*11'12''***15''*18??
Fun:
N/A
Difficulty:
N/A
Novelty:
N/A
Ambiguity:
N/A
Avg. Time: N/A
·
0 ratings
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