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quarague
  • Member for 3 years, 11 months
  • Last seen this week
19 votes
3 answers
2k views

Playing Mastermind against an angel and the devil

14 votes
15 answers
8k views

The computer can't do anything I couldn't do with pen and paper

11 votes
1 answer
889 views

Odd solutions are in 3d

10 votes
3 answers
2k views

Did I copy that wrong?

9 votes
1 answer
696 views

Toroidal tic-tac-toe

7 votes
3 answers
1k views

Continue a hard Loopy/Slitherlink puzzle without brute-force

7 votes
6 answers
1k views

Last in the alphabet on average

6 votes
5 answers
3k views

Four equidistant points on Earth

6 votes
1 answer
465 views

Some mathematical magic

6 votes
1 answer
586 views

International youth meeting

5 votes
5 answers
467 views

cheapskate jigsaw inc

2 votes
1 answer
353 views

German number sequence

0 votes
1 answer
305 views

Google doesn't know everything