Cryptography
Carl Löndahl's user avatar
Carl Löndahl's user avatar
Carl Löndahl's user avatar
Carl Löndahl
  • Member for 10 years, 4 months
  • Last seen more than 3 years ago
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Free-speech activist, cryptoanarchist, marine enthusiast and occasional CTF player with HackingForSoju.

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51
Coffee-break Puzzle: Where does the Driver Sit?
19
A game with 52 cards
18
Mensa IQ test question - shapes in a 4x3 grid
17
The end of the life!
15
Expected Number of Tosses Until H,T,T,H