Problems by Ragnar Groot Koerkamp

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Daily Division	237	69	29%	0.06	56	46	82%	4.8
Detour	897	269	30%	0.03	229	186	81%	4.4
Disastrous Doubling	1273	333	26%	0.01	301	259	86%	3.7
Harry the Hamster	61	23	38%	0.11	24	20	83%	6.6
Height Profile	320	77	24%	0.09	72	59	82%	6.4
Isomorphic Inversion	483	133	28%	0.00	105	79	75%	5.6
Janitor Troubles	1332	918	69%	0.00	904	867	96%	1.5
Journal Editing	195	38	19%	0.13	34	27	79%	6.4
Jumping Choreography	64	29	45%	0.90	18	15	83%	5.7
Jurassic Jigsaw	376	206	55%	0.01	147	141	96%	2.1
KALLAX Construction	138	32	23%	0.00	33	27	82%	6.0