| Cryptography Challenges |
| # |
Description |
Winners |
Points |
| 6294 |
Awarded |
Prize |
| 51 |
Ra's Happy Curse |
1,220 |
61,000 |
50 |
| 8 |
Prime Factor Hangman |
615 |
30,750 |
50 |
| 56 |
Felicia's Scrabble Hash |
592 |
110,150 |
150 |
| 4 |
Dmitri's Substitution Cipher |
556 |
55,600 |
100 |
| 41 |
Tammet's Particle Accelerator |
374 |
74,800 |
200 |
| 21 |
Fielding's Noisy Surprise |
228 |
11,400 |
50 |
| 61 |
Billions and Billions of Buckets |
186 |
55,800 |
300 |
| 6 |
Counting with Yazelbons |
185 |
55,500 |
300 |
| 29 |
Multivac's Quantum Correlation |
154 |
30,800 |
200 |
| 43 |
Echo's In Perlin Space |
151 |
7,550 |
50 |
| 23 |
Concentric Circle Cipher |
117 |
23,400 |
200 |
| 25 |
Zip File Security |
98 |
39,200 |
400 |
| 39 |
Stephenson's Substitution Cipher |
97 |
29,100 |
300 |
| 57 |
The Infrequent Mr. Watson |
94 |
28,200 |
300 |
| 60 |
Alexander's Letter Scramble |
91 |
9,100 |
100 |
| 12 |
Japanese Treasure Hunt |
89 |
8,900 |
100 |
| 37 |
Busey's Stream Cipher |
83 |
16,600 |
200 |
| 63 |
Richard's Geometric Glyphs |
66 |
13,200 |
200 |
| 26 |
Baltar's Wet Dream |
65 |
13,000 |
200 |
| 58 |
Mayan Knotted Sphere |
64 |
19,200 |
300 |
| 22 |
Hip, Skip, and Jump |
64 |
19,200 |
300 |
| 53 |
Cooper's Crazy Glyphs |
57 |
5,700 |
100 |
| 38 |
Kricfalusi's Kerfuffle |
51 |
6,000 |
0 |
| 27 |
Movie Madness |
47 |
4,700 |
100 |
| 48 |
Smith's Christmas Card |
46 |
13,800 |
300 |
| 1 |
Matryoshka Challenge |
46 |
41,400 |
900 |
| 46 |
Johnny's Chair Can Spin |
44 |
2,200 |
50 |
| 10 |
Hunt And Pectorals |
44 |
8,800 |
200 |
| 5 |
Beethoven's Cipher |
42 |
33,600 |
800 |
| 14 |
Euclid's Coconut Head |
41 |
28,700 |
700 |
| 13 |
The Morse Witch Project |
39 |
3,900 |
100 |
| 64 |
Fermat's Square Fractal |
39 |
15,600 |
400 |
| 9 |
Einstein's Theory of Streamability |
37 |
18,500 |
500 |
| 33 |
Mansel's Black Box |
36 |
10,800 |
300 |
| 40 |
Hannigan's Space Adventure |
34 |
1,700 |
50 |
| 45 |
Rubik's Cube Of Joy |
33 |
1,650 |
50 |
| 20 |
Bouncing Balls |
33 |
19,800 |
600 |
| 11 |
Handel's Hexadecimal Handle |
33 |
1,650 |
50 |
| 62 |
Isabella's Amazing Maze |
33 |
13,200 |
400 |
| 32 |
Penny For Your Scrubs |
28 |
5,600 |
200 |
| 28 |
GendouBot Strikes Again |
27 |
13,500 |
500 |
| 35 |
Heinlein's Trinity Cipher |
26 |
5,200 |
200 |
| 7 |
Poppin' Polka Cipher |
25 |
17,200 |
700 |
| 16 |
Feynman's Steganographic Cipher |
24 |
14,400 |
600 |
| 47 |
Every Bit As Savage |
23 |
6,900 |
300 |
| 2 |
Gibson Steganography |
22 |
14,000 |
700 |
| 50 |
Debra's Electrophoresis Pieces |
19 |
7,600 |
400 |
| 52 |
The Mersenne-Foster Cipher |
18 |
9,000 |
500 |
| 30 |
Daneel's Celestial Cipher |
18 |
10,800 |
600 |
| 65 |
Yuri's Cellular Automata |
18 |
8,100 |
450 |
| 18 |
Busy As A Bee |
16 |
4,800 |
300 |
| 49 |
Sheep's Pictographic Melody |
15 |
6,000 |
400 |
| 31 |
Tickle Thicke's Thick Pink Pickle |
14 |
5,600 |
400 |
| 66 |
Felix's Mathematical Language |
10 |
6,500 |
650 |
| 59 |
Polybius Comes Knocking |
9 |
3,600 |
400 |
| 44 |
Judge, Jury, and Executioner |
9 |
4,500 |
500 |
| 15 |
The Blinking Legend |
9 |
4,500 |
500 |
| 42 |
Sagan's Son's Security Signal |
8 |
4,800 |
600 |
| 34 |
Tiny Piano Panoply |
8 |
400 |
50 |
| 17 |
First Contact |
8 |
4,800 |
600 |
| 54 |
Sterling's Robot Speech |
6 |
4,200 |
700 |
| 19 |
Cryptography Challenge #19 |
6 |
2,400 |
400 |
| 55 |
Chinese Space Time |
3 |
1,500 |
500 |