Hottest Questions This Week

31

votes

1

answer

1k

views

This diagram needs a name!

answered yesterday Deusovi♦ 128k

6

votes

1

answer

1k

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How does 100 1000 become 200?

knowledge lateral-thinking computer-science

modified 2 days ago oAlt 3,484

15

votes

1

answer

828

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Supernumerariness

enigmatic-puzzle

answered Sep 21 at 20:19 Deusovi♦ 128k

10

votes

2

answers

534

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Splitting the Primes

mathematics primes

answered Sep 23 at 15:32 hexomino 116k

16

votes

1

answer

896

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The messy chemist

knowledge pattern visual chemistry

modified Sep 23 at 21:50 Jeremy Dover 21.8k

19

votes

1

answer

683

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Tapata (Tapa variation)

logical-deduction grid-deduction

modified Sep 22 at 18:41 Jeremy Dover 21.8k

6

votes

2

answers

679

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Can you prove that 3 + 1 = 5?

word acrostic

answered 7 hours ago Stiv 77k

8

votes

1

answer

486

views

Where did he go?

riddle humor

modified yesterday Stiv 77k

2

votes

2

answers

240

views

Blue eyes riddle: a counter-argument to accepted solution

logical-deduction meta-knowledge blue-eyes

answered Sep 23 at 6:32 Deusovi♦ 128k

7

votes

2

answers

335

views

Another Rook's Tour of the Chessboard

mathematics graph-theory checkerboard primes

answered Sep 24 at 18:21 Prim3numbah 8,759

3

votes

3

answers

330

views

+50

Simple rebus, don't scold me

rebus

modified Sep 24 at 9:56 Amruth A 2,964

1

vote

4

answers

434

views

Which come next in these visual logic sequences?

visual sequence

answered 12 hours ago AndrewF 11

5

votes

1

answer

199

views

Seven-Segment Telephone

visual tiling seven-segment

modified 2 days ago Bass 63.5k

4

votes

1

answer

245

views

"Bees sting." = [1, 2, 3, 7, 8, 9, 5, 6, 4]

pattern letters

modified 2 days ago bobble 8,348

4

votes

1

answer

188

views

It's the roundest today! Add a merry feast to go with it!

riddle story

modified Sep 22 at 15:11 bobble 8,348

10

votes

1

answer

177

views

Tiling three pears with three-pair hexominos

mathematics grid-deduction no-computers tiling polyomino

modified 2 days ago Parcly Taxel 1,781

3

votes

1

answer

276

views

An Elementary Magnum Opus

knowledge enigmatic-puzzle visual

modified 9 hours ago Parcly Taxel 1,781

7

votes

2

answers

245

views

Integers containing all ten digits

mathematics combinatorics number-property

answered 9 hours ago Parcly Taxel 1,781

5

votes

1

answer

125

views

White to play and mate in 3 - adapted from real game

no-computers chess

answered Sep 22 at 16:13 Bass 63.5k

2

votes

2

answers

203

views

Extension to the coin flipping puzzle

mathematics probability coin-tossing

modified yesterday loopy walt 8,451

4

votes

1

answer

252

views

Number Box Puzzle

tiling seven-segment

modified Sep 23 at 9:17 TSLF 6,384

0

votes

2

answers

70

views

Which number replaces the question mark?

calculation-puzzle puzzle-identification

modified Sep 21 at 2:41 Eli 2,101

3

votes

1

answer

121

views

It sounds all good until

lateral-thinking

modified Sep 22 at 4:41 Amoz 6,071

3

votes

1

answer

134

views

The Happy Heptet

riddle word wordplay

modified Sep 21 at 15:50 Gareth McCaughan♦ 108k

1

vote

1

answer

131

views

Divide a board into two pieces without cutting a domino

logical-deduction dominoes

modified Sep 21 at 20:56 Hemant Agarwal 1,269

1

vote

2

answers

271

views

A simple relationship test

word knowledge computer-science acrostic limerick

answered Sep 23 at 19:04 Taco タコス 8,931

5

votes

1

answer

108

views

The digits of the cube of a 3-digit number X

mathematics calculation-puzzle number-property

modified yesterday bobble 8,348

3

votes

1

answer

211

views

How to Sort the Bugs

pattern story

modified yesterday Florian F 17.2k

4

votes

0

answers

226

views

Toilet Paper Math?

knowledge

modified 1 hour ago Amoz 6,071

4

votes

1

answer

164

views

Can you destroy the kingdom without getting caught?

story strategy chess

answered Sep 23 at 4:35 AxiomaticSystem 4,193

4

votes

0

answers

210

views

+150

A Loooooong Sequence of Calculations

word enigmatic-puzzle lateral-thinking

modified yesterday Jerry Dean 1,398

0

votes

1

answer

96

views

Does every validly posed Sudoku have at least one solution and if not what is the minimum number of givens for it to be unsolvable? [duplicate]

logical-deduction grid-deduction optimization sudoku solvability

modified Sep 22 at 13:43 bobble 8,348

-2

votes

1

answer

123

views

The times they are a-changin'

riddle knowledge rhyme poetry movies

modified Sep 23 at 19:13 Pureferret 608

1

vote

3

answers

183

views

Clearing the Snakes

story strategy

answered Sep 24 at 0:34 Dr Xorile 22k

6

votes

0

answers

133

views

A poorly approximated crossword

mathematics word enigmatic-puzzle lateral-thinking crosswords

modified 13 hours ago Taco タコス 8,931

-2

votes

1

answer

129

views

Logical statements relating being sunny, wet, windy, having a raincoat, and sweating [closed]

logical-deduction

modified Sep 23 at 16:41 Rand al'Thor 111k

5

votes

0

answers

124

views

Doubling the cube with rational Meccano strips

mathematics geometry optimization mechanical-puzzles construction

modified Sep 22 at 5:21 Parcly Taxel 1,781

1

vote

1

answer

68

views

How to solve the syllogism problem [closed]

logical-deduction

modified Sep 24 at 21:52 Salmi S 27

0

votes

1

answer

80

views

What would make the correct solution more correct than this solution to this MENSA question?

pattern

modified Sep 22 at 5:13 Stevo 811

-2

votes

1

answer

111

views

Unsovable by two corner displacement - how to repair [closed]

rubiks-cube

answered yesterday Feryll 1,878

0

votes

1

answer

75

views

The Knight's Trial [duplicate]

chess

modified Sep 22 at 16:12 Benjamin Curran 163

0

votes

0

answers

90

views

Guessing the color of the plate behind your head [closed]

logical-deduction hat-guessing

modified Sep 22 at 12:27 RobPratt 5,956

4

votes

0

answers

85

views

Confectionery Crime Conundrum

enigmatic-puzzle

modified 8 hours ago Avi 8,352

4

votes

0

answers

74

views

Ernie and the Equi-area Tetrahedra

mathematics story geometry

modified 2 days ago Penguino 11.9k

2

votes

1

answer

37

views

Spin the letter-cogwheels!

pattern letters

modified 1 hour ago Dr Xorile 22k

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