list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
55 Jasiek   1 345 24.89
26
9
56 Dyzio   5 1005 30.51
15
15
57 Supernumbers in a permutation   12 734 30.52
12
17
58 Crime at Piccadily Circus   3 600 13.81
34
26
59 Bytelandian Information Agency   316 18.42
60 The Gordian Dance   3 126 36.47
9
42
61 Brackets   153 4255 24.61
19
20
62 The Imp   1 250 29.44
17
26
63 Square Brackets   81 3185 56.90
14
19
64 Permutations   77 3522 54.02
12
20
65 Ball   2 141 42.06
26
17
66 Cross-country   35 3527 63.75
11
12
67 Cutting out   1 231 39.22
28
23
68 Expression   150 34.05
69 Moulds   2 85 32.02
17
17
70 Relations   210 26.16
71 Tree   2 400 28.42
12
9
73 Bacterial   1 66 21.05
50
17
75 Editor   51 46.09
76 Editor Inverse   63 18.63
77 New bricks disorder   1 231 35.27
78 Marbles   57 6167 33.63
15
13
82 Easy Problem   2 462 35.60
26
9
83 Bundling   1 20 27.16
84 Shortcut   1 205 28.07
17
17
85 Dice Contest   30 18.94
86 November Rain   4 247 16.27
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   1 289 24.43
17
34
91 Two squares or not two squares   69 5148 25.09
11
14
92 Cutting off Squares   218 42.31
94 Numeral System of the Maya   3 2470 40.27
11
5
95 Street Parade   257 13516 30.85
13
11
96 Shopping   39 2540 44.31
14
11
97 Party Schedule   211 7341 35.70
15
17
98 Dance Floor   2 638 39.44
12
12
99 Bus   170 21.50
100 Tower of Babylon   36 2611 51.12
17
21
101 Fishmonger   43 2023 39.09
18
21
102 GX Light Pipeline Inc   78 32.19
104 Highways   2 611 34.62
23
28
105 Alice and Bob   1 155 29.84
106 Binary Stirling Numbers   2 2105 37.62
4
17
107 Calendar of the Maya   5 123 47.26
26
21
108 Decoding Morse Sequences   5 677 25.98
23
16
109 Exchanges   118 46.60
110 Fill the Cisterns   25 1180 31.90
20
21
112 Horizontally Visible Segments   1 145 28.78
17
34

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