list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
55 Jasiek   1 348 24.74
26
9
56 Dyzio   5 1012 29.95
15
15
57 Supernumbers in a permutation   15 755 30.53
17
20
58 Crime at Piccadily Circus   3 603 13.82
31
24
59 Bytelandian Information Agency   1 324 18.37
17
17
60 The Gordian Dance   3 126 36.42
9
42
61 Brackets   162 4426 24.73
18
20
62 The Imp   1 250 29.40
17
26
63 Square Brackets   86 3289 57.12
14
18
64 Permutations   82 3644 53.70
12
20
65 Ball   2 141 42.06
26
17
66 Cross-country   36 3602 64.05
11
12
67 Cutting out   2 232 39.14
34
30
68 Expression   150 34.05
69 Moulds   2 85 32.02
17
17
70 Relations   210 26.16
71 Tree   2 402 28.44
12
9
73 Bacterial   1 66 21.01
50
17
75 Editor   51 46.09
76 Editor Inverse   63 18.63
77 New bricks disorder   1 233 35.45
78 Marbles   60 6408 33.93
15
13
82 Easy Problem   2 463 35.64
26
9
83 Bundling   1 20 27.16
84 Shortcut   1 205 28.07
17
17
85 Dice Contest   30 18.73
86 November Rain   4 249 16.05
23
23
87 Football   1 48 27.84
88 Which is Next   117 28.48
89 Hang or not to hang   1 59 19.61
17
17
90 Minimizing maximizer   2 291 24.45
17
28
91 Two squares or not two squares   69 5257 25.15
10
14
92 Cutting off Squares   218 42.25
94 Numeral System of the Maya   3 2477 40.30
11
5
95 Street Parade   285 14301 30.63
14
11
96 Shopping   39 2598 44.48
14
10
97 Party Schedule   229 7589 35.75
14
16
98 Dance Floor   2 639 39.47
12
12
99 Bus   170 21.50
100 Tower of Babylon   38 2687 50.69
17
20
101 Fishmonger   44 2044 39.08
18
21
102 GX Light Pipeline Inc   78 32.01
104 Highways   2 620 34.39
23
28
105 Alice and Bob   1 155 29.84
106 Binary Stirling Numbers   3 2127 37.78
5
17
107 Calendar of the Maya   5 124 47.42
26
21
108 Decoding Morse Sequences   5 688 26.02
23
16
109 Exchanges   118 46.60
110 Fill the Cisterns   25 1224 31.31
20
21
112 Horizontally Visible Segments   1 147 28.00
17
34

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