Draw a loop that travels horizontally and vertically from cell center to cell center and that visits each clue, such that the length of every straight segment that meets a clue is equal to that clue.
(Rules and example from 24hPC 2015 IB)
History of the puzzle
Invented by Robert Vollmert (Germany) in 2013. First puzzle by him can be seen on LMD portal.
The name "Geradeweg" means "straight path" in German.
Appearances in the past WPCs
- WPC 2019/World Cup Playoffs by Erhard Notz