list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
55 Jasiek   1 325 24.80
26
9
56 Dyzio   4 951 31.14
17
17
57 Supernumbers in a permutation   6 640 30.09
9
17
58 Crime at Piccadily Circus   4 588 13.86
34
26
59 Bytelandian Information Agency   298 17.46
60 The Gordian Dance   3 118 36.34
9
42
61 Brackets   101 3340 23.95
19
20
62 The Imp   240 29.29
17
17
63 Square Brackets   51 2656 55.96
15
19
64 Permutations   53 3095 54.58
11
19
65 Ball   2 133 42.57
26
17
66 Cross-country   25 3105 63.18
10
12
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 5410 33.09
14
13
82 Easy Problem   1 447 35.55
26
9
83 Bundling   1 18 24.69
84 Shortcut   188 28.92
85 Dice Contest   29 21.78
86 November Rain   1 222 16.56
34
17
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 23.94
17
34
91 Two squares or not two squares   49 4401 24.35
12
16
92 Cutting off Squares   210 41.91
94 Numeral System of the Maya   2 2390 40.02
12
4
95 Street Parade   156 9433 33.25
13
11
96 Shopping   28 2224 43.06
12
9
97 Party Schedule   134 5899 34.75
14
17
98 Dance Floor   2 615 39.04
12
12
99 Bus   163 20.93
100 Tower of Babylon   20 2279 50.26
17
19
101 Fishmonger   29 1784 38.45
16
19
102 GX Light Pipeline Inc   70 33.44
104 Highways   1 543 35.40
26
26
105 Alice and Bob   1 150 29.64
106 Binary Stirling Numbers   -1 1976 37.34
4
15
107 Calendar of the Maya   4 119 46.71
23
17
108 Decoding Morse Sequences   3 579 25.35
24
15
109 Exchanges   115 46.39
110 Fill the Cisterns   13 989 33.33
22
23
112 Horizontally Visible Segments   135 29.05

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