list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
55 Jasiek   1 337 24.94
26
9
56 Dyzio   4 978 31.25
17
17
57 Supernumbers in a permutation   10 691 30.57
11
17
58 Crime at Piccadily Circus   4 595 13.88
34
26
59 Bytelandian Information Agency   308 17.79
60 The Gordian Dance   3 126 36.47
9
42
61 Brackets   133 3826 24.45
18
20
62 The Imp   1 246 29.70
17
26
63 Square Brackets   61 2901 56.82
16
20
64 Permutations   66 3311 54.58
12
20
65 Ball   2 138 42.65
26
17
66 Cross-country   31 3367 63.42
11
12
67 Cutting out   1 229 39.21
28
23
68 Expression   149 33.70
69 Moulds   1 83 31.29
17
17
70 Relations   207 25.96
71 Tree   2 394 28.24
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   1 221 34.68
78 Marbles   50 5765 33.17
14
12
82 Easy Problem   2 458 35.49
26
9
83 Bundling   1 20 27.16
84 Shortcut   194 28.77
85 Dice Contest   29 18.85
86 November Rain   2 232 16.46
26
17
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   277 23.74
17
34
91 Two squares or not two squares   60 4807 24.64
11
15
92 Cutting off Squares   216 42.26
94 Numeral System of the Maya   2 2435 40.06
12
4
95 Street Parade   203 11319 32.12
14
11
96 Shopping   32 2379 43.76
13
10
97 Party Schedule   176 6705 35.35
14
17
98 Dance Floor   2 633 39.38
12
12
99 Bus   166 21.17
100 Tower of Babylon   26 2461 50.60
17
20
101 Fishmonger   35 1924 38.76
16
20
102 GX Light Pipeline Inc   71 32.69
104 Highways   2 590 34.41
23
28
105 Alice and Bob   1 152 29.71
106 Binary Stirling Numbers   -1 2042 37.45
4
15
107 Calendar of the Maya   5 122 47.38
26
21
108 Decoding Morse Sequences   3 639 25.58
24
15
109 Exchanges   117 46.44
110 Fill the Cisterns   20 1113 32.26
20
21
112 Horizontally Visible Segments   1 141 28.46
17
34

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