Kata
Sign Up
Kata
Kumite
Forum
Wiki
Leaders
Log In
Sign Up
Library
Collections
Sort by:
Newest
Oldest
Popularity
Positive Feedback
Most Completed
Least Completed
Recently Published
Hardest
Easiest
Name
Language:
All
My Languages
BF (Beta)
C
Clojure
CoffeeScript
C++
Crystal
C#
Dart
Elixir
Elm (Beta)
Erlang (Beta)
Fortran (Beta)
F#
Go
Groovy (Beta)
Haskell
Java
JavaScript
Julia (Beta)
Kotlin (Beta)
Lua (Beta)
NASM (Beta)
Nim (Beta)
Objective-C (Beta)
OCaml (Beta)
PHP
PowerShell (Beta)
PureScript (Beta)
Python
R (Beta)
Ruby
Rust
Scala (Beta)
Shell
Solidity (Beta)
SQL
Swift
TypeScript
Status:
Approved & Beta
Approved
Beta
Progress:
All
Kata I have not trained on
Kata I have not completed
Kata I have completed
Difficulty:
8 kyu
8 kyu
7 kyu
7 kyu
6 kyu
6 kyu
5 kyu
5 kyu
4 kyu
4 kyu
3 kyu
3 kyu
2 kyu
2 kyu
1 kyu
1 kyu
Tags:
Fundamentals (3743)
Algorithms (2695)
Data Types (2264)
Logic (1965)
Numbers (1156)
Strings (1093)
Puzzles (1087)
Arrays (940)
Games (926)
Mathematics (872)
Basic Language Features (806)
Programming Paradigms (728)
Data Structures (530)
Control Flow (526)
Declarative Programming (453)
Advanced Language Features (311)
Regular Expressions (238)
Object-oriented Programming (228)
Functions (202)
Lists (195)
Functional Programming (164)
Arithmetic (159)
Loops (158)
Objects (134)
Bugs (127)
Data (124)
Algebra (111)
Theoretical Computer Science (109)
Sorting (103)
Security (102)
Parsing (96)
Computability Theory (95)
Recursion (95)
Binary (92)
Classes (92)
Performance (92)
Optimization (88)
Integers (87)
Utilities (85)
Databases (83)
Information Systems (83)
SQL (81)
Cryptography (76)
Geometry (74)
Graphs (72)
Dates/Time (67)
Design Principles (56)
Design Patterns (55)
Sequences (55)
Formatting (51)
29 Kata Found
6 kyu
Encrypt this!
17
17
1
95%
of
86
422
suic
Fundamentals
Strings
Regular Expressions
Declarative Programming
Advanced Language Features
Arrays
Ciphers
Algorithms
Cryptography
Security
6 kyu
Crack the Encrypted Email
3
3
1
88%
of
12
29
yorg
Algorithms
Ciphers
Cryptography
Security
Puzzles
Games
3 kyu
Rail Fence Cipher: Encoding and Decoding
100
100
18
95%
of
171
648
darrentburgess
1 Issue Reported
Algorithms
Ciphers
Cryptography
Security
Strings
5 kyu
Break the Caesar!
12
12
3
92%
of
46
169
kingcobra
1 Issue Reported
Fundamentals
Ciphers
Algorithms
Cryptography
Security
Encryption
Decryption
6 kyu
Ragbaby cipher
14
14
0
87%
of
27
65
dcieslak
Fundamentals
Ciphers
Algorithms
Cryptography
Security
Strings
6 kyu
Decipher this!
79
79
24
93%
of
243
1,262
yvonne-liu
Fundamentals
Strings
Arrays
Ciphers
Algorithms
Cryptography
Security
6 kyu
decipher student messages
3
3
1
92%
of
26
75
Shahmeer
Puzzles
Strings
Ciphers
Algorithms
Cryptography
Security
5 kyu
Interlaced Spiral Cipher
10
10
2
94%
of
8
16
docgunthrop
Algorithms
Ciphers
Cryptography
Security
Strings
5 kyu
Iterative Rotation Cipher
9
9
2
100%
of
12
20
docgunthrop
Algorithms
Strings
Ciphers
Cryptography
Security
Encryption
5 kyu
First Variation on Caesar Cipher
357
357
36
84%
of
306
1,742
g964
Fundamentals
Ciphers
Algorithms
Cryptography
Security
Strings
Utilities
6 kyu
Isogram Cipher
5
5
2
73%
of
24
48
anter69
Algorithms
Ciphers
Cryptography
Security
Encryption
7 kyu
Cipher
1
1
0
90%
of
45
181
bubmet
Algorithms
Ciphers
Cryptography
Security
Encryption
Decryption
Strings
6 kyu
Condi cipher
7
7
1
98%
of
20
50
dcieslak
Algorithms
Ciphers
Cryptography
Security
Strings
Encryption
5 kyu
Basic Nico variation
34
34
10
97%
of
66
282
dcieslak
Fundamentals
Ciphers
Algorithms
Cryptography
Security
Strings
6 kyu
Hex cipher
4
4
1
95%
of
22
57
kingcobra
Algorithms
Cryptography
Security
Object-oriented Programming
Classes
Basic Language Features
Fundamentals
Ciphers
5 kyu
ROT13
84
84
16
86%
of
386
3,351
hvaara
3 Issues Reported
Algorithms
Strings
Ciphers
Cryptography
Security
Regular Expressions
Declarative Programming
Advanced Language Features
Fundamentals
5 kyu
Rot13
318
318
53
86%
of
1,152
10,307
Rubikan
3 Issues Reported
Fundamentals
Ciphers
Algorithms
Cryptography
Security
6 kyu
ASCII Cipher
7
7
0
95%
of
31
84
user3359372
1 Issue Reported
Puzzles
ASCII
Character Encodings
Formats
Encryption
Algorithms
Cryptography
Security
Ciphers
5 kyu
Affine Cipher Helper
14
14
2
83%
of
26
51
jacobb
Algorithms
Ciphers
Cryptography
Security
Objects
Classes
Basic Language Features
Object-oriented Programming
Fundamentals
Strings
6 kyu
Simple Substitution Cipher Helper
61
61
9
94%
of
135
1,854
jacobb
Algorithms
Ciphers
Cryptography
Security
Objects
Classes
Basic Language Features
Object-oriented Programming
Fundamentals
Strings
4 kyu
Vigenère Cipher Helper
233
233
21
83%
of
236
1,534
jacobb
2 Issues Reported
Algorithms
Ciphers
Cryptography
Security
Objects
Classes
Basic Language Features
Object-oriented Programming
Fundamentals
Strings
5 kyu
Caesar Cipher Helper
126
126
14
90%
of
224
1,818
eugene-bulkin
Algorithms
Ciphers
Cryptography
Security
Objects
Classes
Basic Language Features
Object-oriented Programming
Fundamentals
Strings
6 kyu
Atbash Cipher Helper
24
24
6
94%
of
41
427
jacobb
1 Issue Reported
Algorithms
Ciphers
Cryptography
Security
Objects
Classes
Basic Language Features
Object-oriented Programming
Fundamentals
Strings
6 kyu
Kama Sutra Cipher Helper
14
14
2
98%
of
24
161
jacobb
Algorithms
Ciphers
Cryptography
Security
Objects
Classes
Basic Language Features
Object-oriented Programming
Fundamentals
Strings
6 kyu
Rotation Cipher Cracker
34
34
3
92%
of
50
555
NicholasSeward
1 Issue Reported
Puzzles
Ciphers
Algorithms
Cryptography
Security
5 kyu
Vigenère Autokey Cipher Helper
236
236
20
73%
of
168
1,006
jacobb
1 Issue Reported
Algorithms
Ciphers
Cryptography
Security
Objects
Classes
Basic Language Features
Object-oriented Programming
Fundamentals
Strings
6 kyu
Keyword Cipher Helper
23
23
3
94%
of
41
260
jacobb
1 Issue Reported
Refactoring
Ciphers
Algorithms
Cryptography
Security
Objects
Classes
Basic Language Features
Object-oriented Programming
Fundamentals
Strings
6 kyu
Polybius square cipher - encode
17
17
0
97%
of
36
491
tiriana
Algorithms
Cryptography
Security
Ciphers
Encoding
5 kyu
Tongues
44
44
6
97%
of
99
968
Frzy
Algorithms
Strings
Encryption
Cryptography
Security
Decryption
Ciphers
Confirm