list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
55 Jasiek   1 327 24.86
26
9
56 Dyzio   4 959 31.22
17
17
57 Supernumbers in a permutation   8 648 30.22
11
17
58 Crime at Piccadily Circus   4 589 13.86
34
26
59 Bytelandian Information Agency   301 17.52
60 The Gordian Dance   3 118 36.34
9
42
61 Brackets   110 3425 24.10
19
20
62 The Imp   241 29.34
17
17
63 Square Brackets   54 2710 56.02
15
20
64 Permutations   56 3128 54.71
11
19
65 Ball   2 134 42.51
26
17
66 Cross-country   26 3144 63.21
10
12
67 Cutting out   1 226 38.97
28
23
68 Expression   149 33.64
69 Moulds   82 31.08
70 Relations   206 26.04
71 Tree   2 391 28.46
9
1
73 Bacterial   1 65 21.43
50
17
75 Editor   51 46.83
76 Editor Inverse   63 18.67
77 New bricks disorder   1 211 34.65
78 Marbles   46 5476 33.07
14
13
82 Easy Problem   1 449 35.60
26
9
83 Bundling   1 18 24.69
84 Shortcut   191 28.97
85 Dice Contest   29 20.94
86 November Rain   1 223 16.54
34
17
87 Football   1 48 28.57
88 Which is Next   116 29.16
89 Hang or not to hang   58 18.72
90 Minimizing maximizer   273 23.87
17
34
91 Two squares or not two squares   52 4478 24.45
12
15
92 Cutting off Squares   212 42.08
94 Numeral System of the Maya   2 2408 40.01
12
4
95 Street Parade   165 9661 33.20
13
11
96 Shopping   28 2258 43.10
12
9
97 Party Schedule   139 6071 34.99
14
17
98 Dance Floor   2 619 39.12
12
12
99 Bus   164 20.99
100 Tower of Babylon   20 2316 50.18
17
19
101 Fishmonger   29 1809 38.43
15
19
102 GX Light Pipeline Inc   70 33.11
104 Highways   1 546 35.50
26
26
105 Alice and Bob   1 151 29.61
106 Binary Stirling Numbers   -1 1986 37.33
4
15
107 Calendar of the Maya   5 121 47.20
26
21
108 Decoding Morse Sequences   3 594 25.87
24
15
109 Exchanges   115 46.25
110 Fill the Cisterns   13 1004 33.29
22
23
112 Horizontally Visible Segments   138 28.75

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