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klm123
  • Member for 10 years
  • Last seen more than a week ago
11 votes
2 answers
484 views

From knights to kings

1 vote
1 answer
319 views

T Knights, L Knaves and R Jokers with one question type only

2 votes
2 answers
556 views

T Knights, L Knaves and R Jokers

0 votes
2 answers
566 views

Is there probability based Knight-Knave puzzles?

5 votes
1 answer
900 views

Beautiful HH-pattern. Find it

7 votes
1 answer
3k views

Generalization of Sum and Product puzzle

19 votes
11 answers
15k views

Knight, Knave and Joker puzzle

5 votes
1 answer
560 views

How to control the whole board with 8 standard pieces?

10 votes
3 answers
6k views

Mirrored numbers

7 votes
1 answer
1k views

What is the "linguistically hardest" number less than $10^9$?

11 votes
2 answers
738 views

First number, which can not be defined

5 votes
1 answer
378 views

Is there a second solution to points and perpendicular bisectors problem?

9 votes
2 answers
796 views

Middle weight puzzle

8 votes
1 answer
627 views

Find the smallest N to complete the task: "Write a true self-reflective statement about the digits from 0 to N"

7 votes
3 answers
1k views

Most moveable chess position

4 votes
3 answers
15k views

Task 39 from iqtest.dk

6 votes
4 answers
9k views

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

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?

3 votes
1 answer
1k views

Paying the unfair Troll toll

3 votes
1 answer
590 views

$N_{max}$ balls in 3 weightings

60 votes
3 answers
289k views

What is the number of the parking spot?

1 vote
1 answer
2k views

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

0 votes
2 answers
723 views

Number of ways to fold a 2x4 map

6 votes
2 answers
2k views

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

6 votes
1 answer
145 views

When can one construct expression dividable by M from any N numbers?

13 votes
7 answers
3k views

The smallest crossword

7 votes
3 answers
1k views

How many digits can be removed from a division puzzle?

8 votes
1 answer
934 views

Number of tries to guess M-1 letters from M-letters-code

8 votes
4 answers
1k views

How to lock a shared artefact

5 votes
1 answer
579 views

Optimal strategy against a random opponent