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Johannes's user avatar
Johannes's user avatar
Johannes
  • Member for 9 years, 3 months
  • Last seen this week
36 votes
6 answers
7k views

Chasing pirates

30 votes
10 answers
3k views

One prize, infinitely many choices

25 votes
4 answers
3k views

Digging a tunnel between random locations

48 votes
4 answers
3k views

Pythagorean Chess: Knishops

9 votes
7 answers
2k views

Mr. Gardner's dessert

17 votes
2 answers
2k views

Game of Drones - Zap it!

16 votes
2 answers
2k views

Escaping a hungry lion you can't outrun

14 votes
3 answers
2k views

Touching Matchsticks

20 votes
4 answers
1k views

Pythagorean walk

6 votes
5 answers
1k views

A mouse, Two mousetraps, Eight houses

12 votes
3 answers
1k views

Dissecting a square

8 votes
2 answers
1k views

Ant on a rectangular box

4 votes
2 answers
863 views

Puzzle pieces, each in contact with 5 others

19 votes
4 answers
844 views

Stitching together two identical planar shapes

11 votes
4 answers
730 views

Ant on a hyperbox

5 votes
1 answer
694 views

Pythagorean coins

11 votes
2 answers
672 views

A crawling spider and a cautious fly

9 votes
2 answers
548 views

Squaring the new year

11 votes
2 answers
343 views

Holo-puzzle (2)

5 votes
1 answer
327 views

Holo-puzzle (1)

8 votes
2 answers
288 views

Autonumerograms