Sphere Online Judge (SPOJ)

list of riddle problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
425	Kill evil instantly		164	10.04
6291	Problem	5	723	29.04	1 30
6466	Guess the task II	2	172	12.93	11 26
6467	Guess the task III	2	86	6.71	1 34
6469	Guess the task V		38	25.49
10657	LOGIC	9	1459	63.38	5 19
11781	SEQUENCE		54	28.01
11784	The Easiest Sequence Of the World!!		142	29.36
12962	External Sequence	2	76	62.45	9 17
13877	LOGIC	3	131	24.31	34 34
14304	Jaddouic Sequence	2	95	30.25	9 26
15019	Strange Pattern (Easy)	7	501	29.50	10 13
15033	Strange Pattern (Medium)		70	13.47	9 9
15034	Strange Pattern (Hard)		40	13.41	13 21
15042	Strange Pattern (Impossible)	2	47	18.28	1 30
15400	Just Guess The Output !	1	7	0.47	1 1
15426	Just Guess The Output ! (Very Easy)	1	141	4.20	1 1
15765	N-th Term		12	12.77
15784	Coder Express 4!!	1	19	22.60	17 17
15910	Sum The Amazing Series	3	30	33.98	28 39
17659	Time to get a job	3	449	42.75	12 17
17719	Guess The Setters	1	41	48.84	1 1
17949	Fight with Abhishek	2	114	49.38	34 50
19828	Sasha is a noob	3	140	18.05	26 46
19829	Sasha is a noob v2	2	114	19.26	50 50
19945	Learn to Read	3	107	7.41	12 23
20549	Progressions	1	80	51.50	1 9
22767	CAT and XAT	9	154	50.90	5 6
25741	AMUSING SEQUENCE		46	35.92	1 50
28289	Strange Pattern (Impossible) (Hard)	1	5	7.46	42 26
31644	No Description 1	1	10	25.58	1 17
31935	memes FeelsGoodMan	3	15	7.85	50 50
32000	Under the Spreading Chestnut Tree		1	5.26
34160	Strange Pattern (bugged)		4	4.08	34 34
36808	Find my favourite	1	0	0.00	1 1