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David's user avatar
David
  • Member for 3 years, 9 months
  • Last seen more than a week ago
7 votes
1 answer
401 views

What's my number riddle

7 votes
1 answer
303 views

Puzzle for New Year's Day '23

7 votes
3 answers
695 views

1000 digit sum calculation puzzle

4 votes
1 answer
441 views

Five element puzzle

4 votes
1 answer
425 views

Find the next digit in four given sequences

4 votes
1 answer
322 views

Puzzle: Seeking a book to reveal secret of numbers

4 votes
1 answer
273 views

In the spirit of simultaneous equations

3 votes
3 answers
361 views

Spiritual chemistry take two

3 votes
1 answer
492 views

Decode this signal from outer space

1 vote
1 answer
204 views

Spiritual chemistry spell

0 votes
1 answer
228 views

Introducing Punograms

-1 votes
1 answer
217 views

Poem coding scientific constants

-3 votes
2 answers
358 views

Number of elements as compound