Sphere Online Judge (SPOJ)

list of riddle problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
425	Kill evil instantly		163	10.30
6291	Problem	5	635	29.15	1 30
6466	Guess the task II	1	145	12.85	1 17
6467	Guess the task III	2	83	6.83	1 26
6469	Guess the task V		38	27.08
10657	LOGIC	6	1323	63.81	5 22
11781	SEQUENCE		54	27.93
11784	The Easiest Sequence Of the World!!		142	30.91
12962	External Sequence		69	64.51
13877	LOGIC	3	123	24.73	34 34
14304	Jaddouic Sequence		89	29.74
15019	Strange Pattern (Easy)	4	454	30.18	11 15
15033	Strange Pattern (Medium)		60	13.38	1 17
15034	Strange Pattern (Hard)		39	14.24	12 23
15042	Strange Pattern (Impossible)	2	43	18.18	1 30
15400	Just Guess The Output !		8	0.56
15426	Just Guess The Output ! (Very Easy)		134	4.27	1 1
15765	N-th Term		11	14.05
15784	Coder Express 4!!	1	19	23.08	17 17
15910	Sum The Amazing Series	2	17	25.00	26 50
17659	Time to get a job	3	440	42.93	12 17
17719	Guess The Setters		40	48.24	1 1
17949	Fight with Abhishek	2	109	50.44	34 50
19828	Sasha is a noob	2	123	18.42	50 50
19829	Sasha is a noob v2	1	73	14.58	50 50
19945	Learn to Read	3	102	7.54	12 23
20549	Progressions	1	69	49.34	1 6
22767	CAT and XAT	5	131	54.89	1 4
25741	AMUSING SEQUENCE	1	41	35.94	1 50
28289	Strange Pattern (Impossible) (Hard)	1	3	5.17	42 26
31644	No Description 1		8	31.03
31935	memes FeelsGoodMan	2	13	8.90	50 50
32000	Under the Spreading Chestnut Tree		1	16.67
34160	Strange Pattern (bugged)		1	2.04	34 34