Problems by Jan Elffers

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Black Friday0.00824823427689%1.8Easyen
Hay Bales0.0019223216872%5.4Mediumen
Mario0.03485574274%6.9Harden
Racetrack0.02516654772%7.6Harden