list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
3381 Highways   77 4364 37.99
10
9
6 Simple Arithmetics   11 3028 12.20
30
9
24 Small factorials   154 50091 29.64
15
9
18155 abs(a-b) I   61 4514 48.16
5
9
71 Tree   3 450 28.46
12
9
82 Easy Problem   4 494 34.77
17
9
84 Shortcut   1 233 31.59
17
9
147 Tautology   2 729 38.47
9
9
179 Word equations   182 21.79
9
9
228 Shamans   139 20.66
9
9
344 Poker   3 891 37.48
17
9
395 Anti-prime Sequences   2 341 49.55
9
9
399 Team Rankings   1 385 53.26
17
9
406 Logic   107 22.51
17
9
408 Jill Rides Again   2 939 34.11
9
9
695 Unite Fast   1 129 27.29
9
9
699 Huge Knap Sack   1 139 24.94
9
9
872 Mark-up   121 29.73
34
9
996 Continuous Fractions   1 275 37.40
9
9
1162 Tic-Tac-Toe ( II )   7 2351 30.36
17
9
1704 Countdown   298 25.14
26
9
1706 Queens, Knights and Pawns   4 842 33.13
17
9
1801 Drink, on Ice   1 519 43.04
9
9
1865 Making Waves   185 43.07
26
9
1873 Accumulate Cargo   2 86 26.26
34
9
2528 Monkey Vines   4 775 43.31
17
9
2832 Find The Determinant III   1 289 19.89
17
9
3184 Game of Lines   8 1304 27.71
14
9
3387 Changing Maze   13 619 29.57
19
9
3394 Lagrange’s Four-Square Theorem   4 529 45.92
1
9
3464 Clock   3 49 35.35
34
9
3639 Lucky Numbers   7 729 34.10
13
9
3940 Sum of Primes   3 228 62.94
9
9
4555 Einbahnstrasse   2 486 26.60
22
9
5240 Area of a Garden   5 1689 47.03
4
9
5317 Tetravex Puzzle   1 279 46.06
17
9
5530 Math with Bases (Easy)   2 65 23.92
26
9
6731 Coeficientes   2 1253 50.05
10
9
6828 Lineup   7 693 32.26
11
9
6830 Soccer Bets   6 1596 51.13
8
9
7191 Hexagonal Board   6 541 62.11
12
9
7239 Cells   3 76 45.45
17
9
7761 Jollo   3 394 39.98
17
9
7805 Kitchen Robot   3 88 31.90
9
9
7875 Miles and kilometers   6 602 46.79
9
9
7946 Check Ramsey   2 8 39.13
9
9
8177 Beautiful numbers EXTREME   -2 242 27.19
26
9
9042 HQNP Incomputable   4 45 33.55
1
9
9161 Legendre symbol   184 45.30
9
9
9587 The Prime conjecture   5 570 34.37
9
9

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