list of challenge problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
12655 Strongly Connected Chemicals   4 100.00
11689 Real Roots   1 34 94.29
50
50
11975 PIEK   182 92.21
34
42
11397 Find all independent nodes   23 89.23
18073 Colour Brick Game   52 88.66
7063 Cycles, More Cycles   16 83.43
298 Closing down Railway Lines   3 131 83.37
26
17
356 Tethering the Mammoths   12 81.48
9380 Connecting three towns   2 122 81.08
1
17
2629 Robo Eye   1 39 78.03
34
34
18901 The Secret Recipe   45 77.84
758 Tetris AI   73 77.83
10295 HQNP Incomputable Hard   3 61 76.49
21
38
313 The Game of Crosses & Crosses   26 75.52
27840 Seedlings   34 74.92
3947 Brainf F##k Writing   9 1496 74.54
23
3
1422 Digital Image Processing   2 121 74.53
34
34
240 Santa Claus and the Presents   121 73.44
1558 Math II   36 73.24
8733 Summing up Last digits   31 72.83
8638 Sum of Fibonacci numbers   1 135 72.81
50
34
17820 Guess The Number With Lies v5   1 72 72.66
50
50
317 Simple Image Recognition   3 317 72.56
17
26
19920 Strchr in BF   2 9 72.55
26
17
12845 Minimum knight moves Challenge   3 342 72.07
34
17
326 Enjoying a Multiplayer Game   18 71.32
270 Digits of Pi   13 5867 71.29
9
19
13172 Good   -1 24 71.23
34316 Chess Variants Showdown   1 1 70.25
34
34
31758 Artisticity   3 68.97
289 The Turing Music Box   73 68.95
756 Literature List   65 68.30
316 Japan Crossword   159 68.28
276 Herdkeeper   50 68.27
232 Bytelandian Telecom   42 68.25
315 The Secret Fellowship of Byteland   45 67.98
759 Hard Image Recognition   17 67.97
19205 Modular Bernoulli   6 67.58
218 Points on a Sphere   1 188 67.53
17
26
12919 Man of Steel   1 25 67.46
17
34
1423 Digits of SQRT(2)   6 2735 67.40
11
11
15673 Alice and Bob plays again   14 67.01
1481 Yet another computer network problem   23 66.75
34
22217 Help Santa Claus to Pack the Toys   1 5 66.74
34
34
20651 Reliability of Logic Circuits   49 66.56
50
50
17867 Tone Transposition   5 66.36
4246 Place the Numbers II   1 540 66.30
1
1
4760 Primes in Brainf##k   2 139 66.30
17
6
8102 Christmas Tree   4 825 66.23
5
5
26800 Lawnmower   1 49 66.11
17
1

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