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klm123
  • Member for 10 years, 1 month
  • Last seen more than a week ago
60 votes
3 answers
289k views

What is the number of the parking spot?

16 votes
4 answers
38k views

How to solve this IQ test puzzle with arrows and pied squares?

26 votes
6 answers
30k views

The 10,958 Problem

25 votes
3 answers
19k views

Write twenty-four from four numbers

4 votes
3 answers
15k views

Task 39 from iqtest.dk

19 votes
11 answers
15k views

Knight, Knave and Joker puzzle

6 votes
1 answer
12k views

Maximal number of steps needed to solve 2x2x2 Rubik's Cube

21 votes
5 answers
10k views

Help me to find a small but hard and clever maze

6 votes
4 answers
9k views

What is the pattern in this IQ test puzzle with spotted triangles and arrowed circles?

14 votes
7 answers
8k views

IQ-test-type question - sequence of large triangles with black and white small triangles in them

31 votes
5 answers
6k views

Two spies throwing stones into a river

10 votes
3 answers
6k views

Mirrored numbers

59 votes
8 answers
6k views

Find a straight tunnel

25 votes
8 answers
4k views

How to choose at least half of everything

11 votes
1 answer
4k views

How to solve this crazy Chinese puzzle for children?

18 votes
3 answers
4k views

Knights and jokers

13 votes
7 answers
3k views

Fastest way to collect an arbitrary army

7 votes
1 answer
3k views

Generalization of Sum and Product puzzle

13 votes
7 answers
3k views

The smallest crossword

14 votes
5 answers
3k views

What is the smallest positive integer, which can not be written without repetitions of digits and using arithmetics only?

1 vote
1 answer
2k views

Minimum number of weights you need to define any integer weight from 1 to N

7 votes
3 answers
2k views

Create a changeable maze

18 votes
2 answers
2k views

How to create a pure mathematical-logical based puzzle equivalent to resistance based physical puzzle?

7 votes
2 answers
2k views

Irreversible body swap

6 votes
2 answers
2k views

What is the smallest tic-tac-toe board to have a winning strategy?

8 votes
4 answers
1k views

How to lock a shared artefact

7 votes
3 answers
1k views

How many digits can be removed from a division puzzle?

5 votes
3 answers
1k views

Is there a brute-force solution of this puzzle?

13 votes
2 answers
1k views

Let's deal with "Names in Boxes" Safely

17 votes
5 answers
1k views

Universal dissection