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8 kyu
easiest
7 kyu
6 kyu
5 kyu
4 kyu
3 kyu
2 kyu
1 kyu
hardest
Algorithms
23
Arrays
1
Binary
1
Ciphers
23
Cryptography
10
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2
Object-oriented Programming
7
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2
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2
Security
12
Strings
23
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
23 Kata Found
5 kyu
Caesar Cipher Helper
5,184
eugene-bulkin
4 Issues Reported
Ciphers
Object-oriented Programming
Strings
Algorithms
5 kyu
Tongues
2,061
Frzy
Strings
Ciphers
Algorithms
5 kyu
ROT13
28,617
hvaara
Strings
Ciphers
Regular Expressions
Algorithms
6 kyu
Condi cipher
354
dcieslak
Ciphers
Strings
Algorithms
4 kyu
Vigenère Cipher Helper
8,716
jacobb
6 Issues Reported
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
3 kyu
Rail Fence Cipher: Encoding and Decoding
9,049
darrentburgess
3 Issues Reported
Algorithms
Ciphers
Cryptography
Strings
Security
6 kyu
Encrypt this!
23,565
suic
Fundamentals
Strings
Regular Expressions
Arrays
Ciphers
Algorithms
Cryptography
Security
Beta
Cryptography in Characters
7
alex.qm
Status:
Testing & feedback needed
Estimated Rank:
5 kyu
Strings
Ciphers
Fundamentals
Cryptography
Algorithms
Beta
Affine cipher
25
rezabungel
Status:
Testing & feedback needed
Estimated Rank:
6 kyu
Ciphers
Strings
Algorithms
Beta
Cracking Vigenère: unknown language
7
jharris3791
3 Issues Reported
Status:
Testing & feedback needed
Estimated Rank:
3 kyu
Puzzles
Strings
Ciphers
Algorithms
Cryptography
Security
5 kyu
Iterative Rotation Cipher
842
docgunthrop
2 Issues Reported
Strings
Ciphers
Algorithms
5 kyu
Interlaced Spiral Cipher
394
docgunthrop
1 Issue Reported
Ciphers
Strings
Algorithms
5 kyu
A Scandal in Bohemia
121
rge123
Ciphers
Cryptography
Security
Strings
Algorithms
Beta
Bob's Secret Cipher
13
B1ts
Status:
Testing & feedback needed
Estimated Rank:
6 kyu
Ciphers
Algorithms
Cryptography
Security
Strings
Puzzles
7 kyu
Bitty Words
209
Austin Haws
1 Issue Reported
Strings
Binary
Algorithms
Ciphers
Cryptography
7 kyu
Cipher
601
bubmet
Algorithms
Ciphers
Cryptography
Strings
6 kyu
Simple Substitution Cipher Helper
3,685
jacobb
Ciphers
Security
Object-oriented Programming
Strings
Algorithms
6 kyu
Atbash Cipher Helper
649
jacobb
3 Issues Reported
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
Beta
Playfair cipher
7
durfi
1 Issue Reported
Status:
Testing & feedback needed
Estimated Rank:
4 kyu
Ciphers
Cryptography
Security
Strings
Algorithms
4 kyu
Cracking the Vigenère cipher, step 1: determining key length
155
NaMe613
1 Issue Reported
Strings
Cryptography
Ciphers
Algorithms
6 kyu
Kama Sutra Cipher Helper
275
jacobb
Ciphers
Security
Object-oriented Programming
Strings
Algorithms
5 kyu
Affine Cipher Helper
98
jacobb
1 Issue Reported
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
5 kyu
Vigenère Autokey Cipher Helper
1,228
jacobb
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
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