list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
55 Jasiek   1 324 24.76
26
9
56 Dyzio   3 947 31.09
21
17
57 Supernumbers in a permutation   6 634 30.22
9
17
58 Crime at Piccadily Circus   4 584 13.98
34
26
59 Bytelandian Information Agency   297 17.37
60 The Gordian Dance   2 91 25.10
17
34
61 Brackets   94 3281 23.87
19
19
62 The Imp   240 29.29
17
17
63 Square Brackets   51 2619 55.83
15
19
64 Permutations   52 3074 54.51
11
20
65 Ball   2 133 42.68
26
17
66 Cross-country   26 3060 63.17
9
11
67 Cutting out   1 223 38.78
28
23
68 Expression   149 34.58
69 Moulds   82 31.27
70 Relations   206 26.07
71 Tree   2 388 28.21
9
1
73 Bacterial   1 65 21.43
50
17
75 Editor   51 47.20
76 Editor Inverse   63 18.67
77 New bricks disorder   1 208 34.29
78 Marbles   43 5331 33.03
14
13
82 Easy Problem   445 35.62
17
1
83 Bundling   1 18 24.69
84 Shortcut   188 28.92
85 Dice Contest   29 21.97
86 November Rain   219 16.53
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   272 24.00
17
34
91 Two squares or not two squares   47 4345 24.28
12
16
92 Cutting off Squares   210 41.91
94 Numeral System of the Maya   2 2389 40.02
12
4
95 Street Parade   147 9133 33.48
14
11
96 Shopping   27 2208 43.01
12
9
97 Party Schedule   129 5770 34.65
14
17
98 Dance Floor   2 609 39.02
12
12
99 Bus   162 20.87
100 Tower of Babylon   20 2260 50.20
17
19
101 Fishmonger   29 1760 38.74
16
19
102 GX Light Pipeline Inc   69 33.33
104 Highways   1 540 34.99
26
26
105 Alice and Bob   1 150 29.64
106 Binary Stirling Numbers   -1 1965 37.27
4
15
107 Calendar of the Maya   4 119 46.71
23
17
108 Decoding Morse Sequences   3 574 25.28
24
15
109 Exchanges   115 46.39
110 Fill the Cisterns   13 971 33.66
22
23
112 Horizontally Visible Segments   134 28.98

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