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list of challenge problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
53 Kamil   26 6364 49.35
7
5
72 Food Shortage in Byteland   260 54.94
126 Solovay-Strassen Inverted   101 57.63
127 Johnny Goes Shopping   9 1499 65.89
20
24
155 Solving the Puzzle   2 12 5.07
34
17
218 Points on a Sphere   1 188 67.53
17
26
219 Pawns Gone Wild   23 60.70
222 The Burning City   43 58.65
225 Nightmare in the Towers of Hanoi   19 47.79
232 Bytelandian Telecom   42 68.25
240 Santa Claus and the Presents   121 73.44
276 Herdkeeper   50 68.27
285 Atomic Shelters   1 121 63.05
17
17
289 The Turing Music Box   73 68.95
294 Johnny and the Optimisation of Homework   16 45.43
295 Bytelandian Origami   1 27 61.84
17
34
298 Closing down Railway Lines   3 131 83.37
26
17
313 The Game of Crosses & Crosses   26 75.52
315 The Secret Fellowship of Byteland   45 67.98
316 Japan Crossword   159 68.28
321 X-Words   1 19 64.46
34
17
326 Enjoying a Multiplayer Game   18 71.32
353 Displace   1 43 47.08
34
17
525 Fractions Calculator   53 41.53
528 Shortest Superstring   4 174 48.18
28
34
919 Prime checker   10 1619 65.43
15
28
1711 Greatest Common Divisor   108 31.68
1742 Brainf_ck   70 36.24
2624 JawBreaker Game   1 86 61.16
26
26
4246 Place the Numbers II   1 540 66.32
1
1
5842 Polybius square   2 1025 59.25
34
12
6125 Dos Date   2 788 55.81
17
6
6173 Burned Pancakes Tower   1 23 64.61
17
17
6295 Area Difference   2 388 44.61
6
5
6646 Fully Parenthesized Expression   26 43.75
7063 Cycles, More Cycles   16 83.43
7105 Reverse the Input   3 544 34.53
28
12
7225 Word To Number   2 156 61.22
17
9
7480 Nth Prime   4 618 45.56
26
12
7958 Prisoner of Benda (Challenge)   10 50.00
8102 Christmas Tree   4 825 66.23
5
5
8638 Sum of Fibonacci numbers   1 135 72.81
50
34
8672 Distributing the balls   26 32.73
8675 Equation Check   1 262 57.52
1
9
8676 Digits of Phi (Golden Ratio)   2 293 53.66
17
17
8733 Summing up Last digits   31 72.83
8950 Grid points   44 57.73
9380 Connecting three towns   2 122 81.08
1
17
10295 HQNP Incomputable Hard   3 61 76.49
21
38
11397 Find all independent nodes   23 89.23

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