list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
55 Jasiek   1 340 24.94
26
9
56 Dyzio   5 991 30.97
15
15
57 Supernumbers in a permutation   11 698 30.67
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   143 3990 24.58
19
20
62 The Imp   1 247 29.71
17
26
63 Square Brackets   68 3026 56.84
15
19
64 Permutations   70 3365 54.72
12
20
65 Ball   2 139 42.28
26
17
66 Cross-country   33 3421 63.48
11
12
67 Cutting out   1 230 39.29
28
23
68 Expression   149 33.58
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   53 5894 33.35
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   4 238 16.49
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   63 4937 24.87
11
14
92 Cutting off Squares   217 42.35
94 Numeral System of the Maya   2 2446 40.08
12
4
95 Street Parade   217 12026 31.64
14
11
96 Shopping   34 2435 44.08
14
10
97 Party Schedule   188 6914 35.48
14
17
98 Dance Floor   2 635 39.43
12
12
99 Bus   167 21.23
100 Tower of Babylon   28 2505 50.74
18
20
101 Fishmonger   37 1952 38.87
16
19
102 GX Light Pipeline Inc   72 32.91
104 Highways   2 602 34.64
23
28
105 Alice and Bob   1 152 29.71
106 Binary Stirling Numbers   -1 2059 37.40
5
15
107 Calendar of the Maya   5 122 47.09
26
21
108 Decoding Morse Sequences   4 652 25.86
23
15
109 Exchanges   117 46.44
110 Fill the Cisterns   23 1140 32.10
20
21
112 Horizontally Visible Segments   1 143 28.61
17
34

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