Problems by Jan Elffers

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Black Friday	0.00	82	4938	4388	89%	1.7Easy	en
Hay Bales	0.00	192	234	168	72%	5.4Medium	en
Mario	0.03	485	59	43	73%	7.4Hard	en
Racetrack	0.02	516	68	48	71%	7.6Hard	en