Problems by Jan Elffers

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Black Friday	0.00	82	4849	4302	89%	1.8Easy	en
Hay Bales	0.00	192	233	168	72%	5.4Medium	en
Mario	0.03	485	57	42	74%	6.9Hard	en
Racetrack	0.02	516	65	47	72%	7.6Hard	en