Hottest Questions This Week

39

votes

3

answers

3k

views

Controlling a robot blindfolded on a 9x9 grid

mathematics combinatorics

modified Dec 4 at 8:06 npkllr 1,069

12

votes

8

answers

4k

views

Three people wearing hats

modified yesterday Luis Masuelli 119

9

votes

5

answers

2k

views

Aces, twos, threes, and fours in a row

number-sequence

answered 2 days ago Matzurai 11

20

votes

2

answers

2k

views

Mostly One Way Travel : Says Grandpa

riddle knowledge

modified 16 hours ago alamar 119

13

votes

3

answers

1k

views

A twisted enigma

enigmatic-puzzle visual

modified Dec 2 at 23:11 Yeetusfetus 1

9

votes

4

answers

1k

views

Finding the hardest 5x5 grid for a blindfolded robot to solve

mathematics combinatorics

modified yesterday Peter LeFanu Lumsdaine 1,431

7

votes

2

answers

1k

views

Two congruent triangles

mathematics geometry

modified Dec 2 at 12:08 JMP 29.6k

7

votes

4

answers

1k

views

What comes next in this sequence, and why?

number-sequence number-property

modified 4 hours ago Ms Designer 21

12

votes

1

answer

2k

views

What is a Sexy Phrase™?

pattern word-property

answered Nov 30 at 18:38 Tom 47.1k

6

votes

2

answers

606

views

Emblem gestures

enigmatic-puzzle visual

answered yesterday Johnson 710

11

votes

2

answers

430

views

Professor Pun's Personal Project

knowledge visual nonogram humor

modified 18 hours ago F1Krazy 6,377

11

votes

2

answers

763

views

Perambulating ants

logical-deduction

modified 2 days ago JMP 29.6k

14

votes

1

answer

329

views

No Burglars Allowed

word knowledge enigmatic-puzzle

modified 2 days ago JS1 13.2k

8

votes

1

answer

353

views

Number puzzle. Can you replace the question mark?

cipher

answered 2 days ago Stiv 15.5k

9

votes

1

answer

314

views

Twelve Labours - #12 Pluto Pups

knowledge rhyme no-computers anagram

modified 2 days ago Belhenix 572

13

votes

1

answer

281

views

Crack the $4$-letter word from the following figure

cipher

modified Dec 3 at 10:17 JMP 29.6k

6

votes

1

answer

372

views

Dying for Caesar

cryptic-crosswords

modified yesterday Gareth McCaughan♦ 83.7k

5

votes

1

answer

175

views

Two cards which product is not a square

mathematics calculation-puzzle

modified yesterday Quintec 6,396

0

votes

2

answers

174

views

Controlling a robot blindfolded on ANY 2x2 grid

mathematics combinatorics

modified Dec 3 at 9:15 npkllr 1,069

7

votes

1

answer

165

views

A Riddle of Opportunity

riddle word

modified Dec 3 at 18:06 Thomas Markov 1,310

4

votes

2

answers

235

views

Number sequence. What's next?

pattern number-sequence

answered Dec 1 at 12:10 Stiv 15.5k

7

votes

1

answer

180

views

A Butcher's Brawl

wordplay cryptic-crosswords

modified 2 days ago Avi 2,101

9

votes

2

answers

269

views

Unusual series of events

word lateral-thinking

modified 2 days ago Michal B. 284

0

votes

1

answer

198

views

“When the Romans counted the entirety of their whole army, their sum was greater than the value of this.” [closed]

enigmatic-puzzle calculation-puzzle

modified Dec 3 at 12:04 Glorfindel 18.3k

3

votes

1

answer

134

views

a box full of unfair coins

logical-deduction probability

modified 14 hours ago Gareth McCaughan♦ 83.7k

3

votes

1

answer

220

views

Weren't we supposed to know more of the story by now…?

knowledge lateral-thinking

modified Dec 2 at 20:48 Stiv 15.5k

-1

votes

1

answer

123

views

8-puzzle in 12 steps

mathematics logical-deduction sliding-blocks

modified 2 days ago Skylar 209

3

votes

5

answers

248

views

The Angry Astrologist [closed]

lateral-thinking situation

modified Dec 4 at 8:10 Rubio♦ 37.6k

3

votes

1

answer

140

views

Rotary phone with numbers and letters

no-computers puzzle-creation

modified Dec 1 at 11:29 JMP 29.6k

5

votes

1

answer

168

views

A Bored Jailer and His Number Game

strategy

modified yesterday Jens 2,800

-1

votes

1

answer

118

views

The Hardest Logic Puzzle Ever! I guess [closed]

logical-deduction

answered 19 hours ago Archipelago 550

4

votes

1

answer

91

views

Mathmatical equation answer [closed]

mathematics logical-deduction

answered 19 hours ago Quintec 6,396

4

votes

1

answer

88

views

Highest scoring words based on distance travelled along the alphabet v2

word arithmetic

answered 2 days ago hexomino 70.5k

3

votes

1

answer

107

views

Replace “?” in a squence of numbers

knowledge number-sequence

answered yesterday npkllr 1,069

2

votes

0

answers

223

views

Decode this message to stop the destruction of Science!

cipher

modified yesterday Thomas Markov 1,310

2

votes

1

answer

103

views

Placing three sets of cards Ace to 9 in a row

mathematics number-sequence

answered 2 days ago sus 46

3

votes

1

answer

92

views

Perambulating ants 2

logical-deduction

modified yesterday JMP 29.6k

8

votes

0

answers

88

views

Witness intimidation

visual crosswords

modified 1 hour ago Avi 2,101

-3

votes

0

answers

107

views

What will you do for this country? [closed]

logical-deduction enigmatic-puzzle lateral-thinking

asked 2 days ago Rik 1

1

vote

1

answer

77

views

Date from 2 wooden cube puzzle [duplicate]

calculation-puzzle time

answered 2 days ago JMP 29.6k

0

votes

0

answers

93

views

Factory Owner Brain Teaser [closed]

mathematics word-problem money

modified Nov 30 at 10:08 JMP 29.6k

1

vote

0

answers

79

views

Where can I buy a 4x4 Ghost Cube?

rubiks-cube twisty-puzzles

asked Dec 3 at 0:00 Trevin Avery 111

3

votes

1

answer

70

views

A game of cross-dominos

cryptic-crosswords dominoes

modified 1 hour ago postmortes 1,449

-1

votes

0

answers

64

views

Mystery Sudoku = new variant [closed]

logical-deduction puzzle-creation sudoku

modified Dec 1 at 9:56 JMP 29.6k

3

votes

0

answers

44

views

Maximizing Product of Selected Cards

mathematics calculation-puzzle strategy probability

asked 13 hours ago Nahmid 430

Top Questions

Looking for more? Browse the complete list of questions, or popular tags. Help us answer unanswered questions.