list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
69 Moulds   2 129 35.51
12
12
68 Expression   159 30.58
1
34
67 Cutting out   2 286 42.26
30
27
66 Cross-country   38 4059 64.54
11
12
65 Ball   2 149 35.21
17
23
64 Permutations   98 4271 51.95
12
20
63 Square Brackets   92 3838 56.87
14
18
62 The Imp   1 289 30.45
17
23
61 Brackets   175 5392 24.43
19
20
60 The Gordian Dance   3 207 39.13
12
45
59 Bytelandian Information Agency   2 406 19.44
17
23
58 Crime at Piccadily Circus   3 636 13.91
31
21
57 Supernumbers in a permutation   21 1035 32.47
17
19
56 Dyzio   8 1207 31.46
11
14
55 Jasiek   3 461 28.23
21
13
54 Julka   163 22911 27.44
19
6
51 Fake tournament   42 1787 27.31
18
19
50 Invitation Cards   29 1716 43.00
16
18
49 Hares and Foxes   1 107 8.02
17
26
48 Glass Beads   28 3358 37.80
15
18
47 Skyscraper Floors   6 282 12.67
24
17
45 Commedia dell Arte   2 235 34.39
5
26
44 Substitution Cipher   2 320 13.50
17
17
43 Copying Books   45 2724 25.53
19
19
42 Adding Reversed Numbers   103 76121 48.39
6
4
41 Play on Words   42 3206 19.39
21
24
40 Lifting the Stone   6 1595 23.51
13
16
39 Piggy-Bank   139 8080 35.45
14
16
38 Labyrinth   97 5286 25.76
17
16
37 The Proper Key   1 135 15.56
17
17
36 Secret Code   6 538 36.68
17
17
35 Equipment Box   6 1296 14.61
7
20
34 Run Away   2 472 21.97
26
34
33 Trip   18 1943 25.93
25
16
32 A Needle in the Haystack   193 10855 38.18
15
13
31 Fast Multiplication   48 8643 20.65
15
12
30 Bytelandian Blingors Network   54 3718 39.05
14
10
29 Hash it!   14 3575 24.20
14
8
28 Help the Military Recruitment Office!   6 774 16.11
12
9
27 Sorting Bank Accounts   53 8726 40.44
11
6
26 Build the Fence   37 2205 28.18
22
17
25 Pouring water   100 5348 24.15
19
22
24 Small factorials   153 49418 29.68
15
9
23 Pyramids   -20 5597 36.94
9
15
22 Triangle From Centroid   9 2633 46.65
9
22
20 The Bytelandian Cryptographer (Act IV)   2 55 26.87
21
34
19 The Bytelandian Cryptographer (Act III)   1 128 37.90
17
26
18 The Bytelandian Cryptographer (Act II)   4 664 29.93
25
1
17 The Bytelandian Cryptographer (Act I)   8 1344 41.90
15
26
16 Sphere in a tetrahedron   12 3479 56.49
11
16

Most popular tags