list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
55 Jasiek   1 340 24.94
26
9
56 Dyzio   5 994 30.90
15
15
57 Supernumbers in a permutation   11 702 30.64
10
17
58 Crime at Piccadily Circus   3 596 13.88
34
26
59 Bytelandian Information Agency   308 17.74
60 The Gordian Dance   3 126 36.47
9
42
61 Brackets   144 4019 24.59
19
20
62 The Imp   1 247 29.42
17
26
63 Square Brackets   71 3041 56.84
15
19
64 Permutations   70 3376 54.71
12
20
65 Ball   2 139 42.28
26
17
66 Cross-country   34 3433 63.50
11
12
67 Cutting out   1 230 39.29
28
23
68 Expression   150 34.17
69 Moulds   1 83 31.29
17
17
70 Relations   207 25.96
71 Tree   2 394 28.19
12
9
73 Bacterial   1 66 21.10
50
17
75 Editor   51 46.09
76 Editor Inverse   63 18.67
77 New bricks disorder   1 224 34.73
78 Marbles   54 5916 33.33
14
13
82 Easy Problem   2 459 35.51
26
9
83 Bundling   1 20 27.16
84 Shortcut   196 28.72
85 Dice Contest   30 18.94
86 November Rain   4 239 16.51
23
23
87 Football   1 48 28.57
88 Which is Next   117 29.32
89 Hang or not to hang   1 59 19.61
17
17
90 Minimizing maximizer   1 279 23.84
17
34
91 Two squares or not two squares   64 4949 24.89
11
14
92 Cutting off Squares   217 42.35
94 Numeral System of the Maya   2 2446 40.08
12
4
95 Street Parade   219 12179 31.53
14
11
96 Shopping   35 2442 44.11
13
10
97 Party Schedule   191 6968 35.50
14
17
98 Dance Floor   2 635 39.43
12
12
99 Bus   167 21.25
100 Tower of Babylon   28 2518 50.83
18
20
101 Fishmonger   37 1961 38.91
16
19
102 GX Light Pipeline Inc   77 32.84
104 Highways   2 602 34.70
23
28
105 Alice and Bob   1 152 29.71
106 Binary Stirling Numbers   -1 2062 37.43
5
15
107 Calendar of the Maya   5 122 47.09
26
21
108 Decoding Morse Sequences   4 655 25.88
23
15
109 Exchanges   117 46.44
110 Fill the Cisterns   24 1145 32.15
20
21
112 Horizontally Visible Segments   1 143 28.61
17
34

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