Problems by Lech Duraj

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Captain Obvious and the Rabbit-Man	48	18	38%	0.53	20	16	80%	7.0
Chemist's vows	692	192	28%	0.00	142	120	85%	4.0
Crane	146	84	58%	0.02	53	51	96%	3.8
Draughts	198	98	49%	0.01	83	75	90%	4.0
Escape	345	50	14%	0.72	48	17	35%	8.0
Jewel Heist	103	32	31%	0.84	34	27	79%	6.7
Rubik's Rectangle	43	10	23%	0.33	12	8	67%	7.8
The Imp	184	41	22%	0.09	54	30	56%	8.6
Wheels	519	173	33%	0.01	161	137	85%	3.9
Word Equations	131	28	21%	0.05	39	25	64%	7.6