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20 Bookmarks

Votes Activity Newest Views Added
34
votes
7
answers
7k
views

Why is it impossible to connect 3 black dots to 3 red dots?

mathematics visual graph-theory
Nov 17 at 16:38 bobble 6,991
11
votes
1
answer
988
views

Deusovi - trapped!

word wordplay enigmatic-puzzle visual
May 12 '19 at 19:59 Arnaud Mortier 7,380
17
votes
1
answer
965
views

What is an Infatuated Word™?

word-property
Jan 25 at 9:47 Lukas Rotter 4,928
11
votes
3
answers
1k
views

Missed A Connection

riddle enigmatic-puzzle
Nov 16 '16 at 16:06 MMAdams 3,602
11
votes
2
answers
993
views

Arrange coins on 3x3 table from vertical to horizontal

mechanical-puzzles
Nov 17 '16 at 16:00 kaine 8,894
11
votes
12
answers
30k
views

I am seen in darkness and in light, What am I? [closed]

riddle
Nov 12 '16 at 15:28 Beastly Gerbil 45.2k
20
votes
2
answers
1k
views

Prepared for Yet Another Simple Rebus?

rebus
Nov 4 '16 at 13:40 IAmInPLS 11.4k
9
votes
9
answers
4k
views

Half the pentagon!

mathematics geometry
Jan 6 '17 at 19:11 Community♦ 1
9
votes
1
answer
2k
views

A very strange email

story steganography
Oct 20 '16 at 6:12 Community♦ 1
86
votes
2
answers
3k
views

REJBÄS - an unfinished flat-pack puzzle

visual rebus
Oct 9 '16 at 12:03 Community♦ 1
31
votes
4
answers
3k
views

Breaking the record

riddle lateral-thinking no-computers
Sep 2 '16 at 12:06 Peteris 258
11
votes
2
answers
565
views

Ernie and the Disco Unicorn

mathematics geometry story
Sep 1 '16 at 14:05 Sconibulus 18.3k
16
votes
3
answers
10k
views

What are the three numbers in this puzzle?

logical-deduction meta-knowledge
Feb 7 '20 at 20:45 user3294068 7,295
106
votes
3
answers
7k
views

The brain-curdling eldritch horrors and the third dimension

riddle three-dimensional
Sep 18 '17 at 20:31 Avigrail 2,988
1
vote
5
answers
1k
views

Obi-Wan vs Grievous

mathematics word-problem paradox
Apr 19 '15 at 20:11 Community♦ 1
5
votes
11
answers
6k
views

In what field does π²=2?

mathematics lateral-thinking
Jul 25 at 4:30 Scratch---Cat 1,331
37
votes
11
answers
4k
views

Sudoku net that is always solvable

optimization sudoku
Apr 28 '17 at 9:28 ghosts_in_the_code 6,579
10
votes
6
answers
2k
views

A tricky batch of four number sequences

number-sequence
Jul 28 at 2:19 Culver Kwan 5,378
-2
votes
2
answers
518
views

Binary manipulation game

mathematics logical-deduction strategy combinatorics
Feb 14 '15 at 22:28 Abr001am 946
13
votes
2
answers
2k
views

How to solve Oskar van Deventer's gear maze 2x2

mechanical-puzzles mazes geared-puzzles
Feb 6 '15 at 7:54 Community♦ 1
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