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Guru

Accepted answer and score of 40 or more. This badge can be awarded multiple times.

Awarded 564 times.

How many ways to tile this shape with dominoes?

Awarded 21 hours ago

Pranay

25.5k1 gold badge56 silver badges160 bronze badges

The "Loop of rope" dilemma

Awarded Feb 24 at 19:00

Gareth McCaughan♦

126k8 gold badges335 silver badges482 bronze badges

A puzzle in 52 cards

Awarded Feb 11 at 15:09

Deusovi♦

157k16 gold badges570 silver badges662 bronze badges

A Puzzle That Dims a Tornado

Awarded Oct 15, 2025 at 11:21

Gordon K

10.7k2 gold badges33 silver badges78 bronze badges

A man you don't meet every day

Awarded Sep 22, 2025 at 1:04

DanieI S

13.9k51 silver badges84 bronze badges

I never knew my words could speak!

Awarded Sep 17, 2025 at 5:21

M Oehm

70.8k3 gold badges249 silver badges314 bronze badges

I am ... not a political riddle

Awarded Sep 13, 2025 at 9:36

M Oehm

70.8k3 gold badges249 silver badges314 bronze badges

Is it possible to construct a sentence where any of they're / their / there could grammatically make sense?

Awarded Sep 5, 2025 at 16:17

Jaap Scherphuis

60k8 gold badges147 silver badges237 bronze badges

How does "thou" equal "oneg"?

Awarded Aug 12, 2025 at 15:23

juicifer

18.8k2 gold badges76 silver badges112 bronze badges

Eccentric Millionaire Probability Paradox

Awarded Aug 9, 2025 at 18:02

JS1

19.4k3 gold badges59 silver badges112 bronze badges

How do I force-quit the program?

Awarded Jul 15, 2025 at 0:41

2012rcampion

19.3k3 gold badges69 silver badges101 bronze badges

Here is the probability, but what was the question?

Awarded Jul 3, 2025 at 2:45

Pranay

25.5k1 gold badge56 silver badges160 bronze badges

Rooks on a 15x15 chessboard

Awarded Jun 26, 2025 at 2:28

Slepz

1,4561 gold badge12 silver badges24 bronze badges

Pythagorean quilts

Awarded May 28, 2025 at 10:21

Bass

86.4k10 gold badges206 silver badges404 bronze badges

7x10 floor and a 8x8 and a 6x1 carpet, only one cut allowed

Awarded May 23, 2025 at 6:26

Daniel Mathias

19.8k2 gold badges44 silver badges89 bronze badges

My Puzzling Girlfriend

Awarded Apr 29, 2025 at 23:22

fondor

8836 silver badges17 bronze badges

Two Pixel Change

Awarded Apr 1, 2025 at 13:08

Jaap Scherphuis

60k8 gold badges147 silver badges237 bronze badges

An old pirate treasure map... But who is the owner?

Awarded Mar 24, 2025 at 18:34

noneuclideanisms

13.9k47 silver badges91 bronze badges

Starting with a pile of 1,001 rocks, discarding some and splitting up the piles, can you eventually have all piles with exactly 3 rocks?

Awarded Mar 18, 2025 at 17:25

Ankoganit

21.3k3 gold badges90 silver badges154 bronze badges

Prove that the equality, 1/a+ 1/b + 1/c + 1/d + 1/e + 1/f = 1 has no solutions in odd natural numbers

Awarded Feb 18, 2025 at 15:25

franck vivien

3,51912 silver badges25 bronze badges

1 2 3 4 5 6 7 8 9 = 1

Awarded Feb 7, 2025 at 0:51

user23013

1,12810 silver badges16 bronze badges

Find average age without revealing your age

Awarded Dec 20, 2024 at 1:06

Jiminion

1,98215 silver badges19 bronze badges

Explain how π – 1 + 50 + ⅔ × 1000 is PLONK

Awarded Nov 19, 2024 at 3:27

kagami

2,25810 silver badges19 bronze badges

Can you win this territory game while going second?

Awarded Nov 11, 2024 at 8:21

Retudin

11.9k1 gold badge20 silver badges63 bronze badges

Prove that it is always possible for them to join the line so that the number of men in front of them is equal to the number of women behind them

Awarded Oct 29, 2024 at 14:15

Neil

9009 silver badges11 bronze badges

World's smallest Sudoku!

Awarded Sep 30, 2024 at 9:06

juicifer

18.8k2 gold badges76 silver badges112 bronze badges

The World Cup final conspiracy

Awarded Sep 19, 2024 at 7:01

Chengarda

3,79917 silver badges34 bronze badges

Empty sudoku puzzle

Awarded Sep 18, 2024 at 16:54

Glorfindel

28.5k9 gold badges100 silver badges145 bronze badges

A seven letter *

Awarded Sep 7, 2024 at 6:36

Tom

74.7k4 gold badges268 silver badges378 bronze badges

Sliding Bolt Puzzle

Awarded Sep 5, 2024 at 9:30

Kendall Frey

3,53326 silver badges27 bronze badges

The answer is not wrong

Awarded Aug 30, 2024 at 6:30

juicifer

18.8k2 gold badges76 silver badges112 bronze badges

Seth and Cain take turns picking numbers from 1 to 50. Who wins?

Awarded Aug 27, 2024 at 20:50

xnor

31.6k4 gold badges103 silver badges170 bronze badges

Fitting the 9th piece into the pizza box

Awarded Aug 24, 2024 at 14:49

RobPratt

18.1k1 gold badge41 silver badges74 bronze badges

Why is a single-corner twist not a valid position on a Rubik's cube?

Awarded Aug 15, 2024 at 3:48

Logan M

1,0111 gold badge9 silver badges13 bronze badges

Can you tile a 25x25 square with a mixture of 2x2 squares and 3x3 squares?

Awarded Aug 5, 2024 at 0:22

Bubbler

17.8k1 gold badge34 silver badges114 bronze badges

lolcatz can haz ur infinit cheeseboard

Awarded Jul 23, 2024 at 0:41

Bass

86.4k10 gold badges206 silver badges404 bronze badges

Footprints in the Snow

Awarded Jun 6, 2024 at 14:05

Stiv

170k14 gold badges615 silver badges928 bronze badges

Can I Date This Woman?

Awarded May 24, 2024 at 9:25

Beastly Gerbil

72.1k11 gold badges234 silver badges387 bronze badges

Which duplo digit is 6 or 9?

Awarded May 23, 2024 at 20:10

PDT

I'm [suffix] to [prefix] it, [infix] it's [whole]

Awarded May 12, 2024 at 22:27

Stiv

170k14 gold badges615 silver badges928 bronze badges

Winning chance in coins game with fixing

Awarded Apr 18, 2024 at 21:16

GoblinGuide

1,3141 gold badge11 silver badges15 bronze badges

The Oracle's IQ Test

Awarded Apr 11, 2024 at 19:33

Qami

5885 silver badges7 bronze badges

Three missing digits in 42 factorial

Awarded Mar 12, 2024 at 15:47

Rand al'Thor♦

121k30 gold badges339 silver badges665 bronze badges

"I claim this corner of the world for Britain!" - What game are Alex and Brooke playing?

Awarded Mar 12, 2024 at 5:58

Jeremy Dover

31.2k3 gold badges81 silver badges187 bronze badges

Pirates and gold coins

Awarded Mar 7, 2024 at 16:33

SQB

5,27634 silver badges59 bronze badges

The tags on this puzzle are correct

Awarded Feb 29, 2024 at 19:55

Deusovi♦

157k16 gold badges570 silver badges662 bronze badges

How do I solve this cube?

Awarded Feb 23, 2024 at 13:51

fljx

17.6k2 gold badges68 silver badges104 bronze badges

What is MOehm trying to tell us?

Awarded Feb 18, 2024 at 2:30

RottersSlave

8819 silver badges13 bronze badges

What should I call this poker hand with a straight?

Awarded Feb 7, 2024 at 21:55

Stiv

170k14 gold badges615 silver badges928 bronze badges

A strange operator on my new calculator

Awarded Feb 5, 2024 at 20:36

hexomino

140k10 gold badges403 silver badges583 bronze badges

`print("Hello, World!")`

Awarded Jan 31, 2024 at 20:42

loopy walt

21.8k1 gold badge38 silver badges97 bronze badges

A very unique chess puzzle

Awarded Jan 25, 2024 at 5:18

boboquack

22.2k1 gold badge72 silver badges144 bronze badges

This is not a Wordle

Awarded Dec 23, 2023 at 5:05

ChimiSeanGa

7366 silver badges5 bronze badges

What is the largest n-way tie possible for Mario Kart?

Awarded Dec 22, 2023 at 17:05

Toffee

1,1976 silver badges13 bronze badges

A five card trick - How does it work?

Awarded Dec 5, 2023 at 16:16

Kate Gregory

6,3181 gold badge30 silver badges38 bronze badges

Hungry lions and a goat

Awarded Dec 2, 2023 at 5:19

Ben Aaronson

2,46921 silver badges23 bronze badges

A Surprising Circle Packing

Awarded Nov 28, 2023 at 3:50

Brian

8716 silver badges10 bronze badges

Out of these 20 Doors, Which One Leads You to the Jackpot?

Awarded Oct 30, 2023 at 23:42

Bass

86.4k10 gold badges206 silver badges404 bronze badges

Three mathematicians are forever in Prison

Awarded Oct 29, 2023 at 20:37

Julian Rosen

14.4k1 gold badge54 silver badges99 bronze badges

Cryptictionary!

Awarded Sep 21, 2023 at 20:41

kayzeroshort

13.1k52 silver badges62 bronze badges

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