Problems by Jan Elffers

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Black Friday0.00824773422789%1.8Easyen
Hay Bales0.0019223316973%5.3Mediumen
Mario0.03485584272%6.9Harden
Racetrack0.02516654772%7.5Harden