Kata Library

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26 Kata Found

6 kyu

Rotation Cipher Cracker

805NicholasSeward2 Issues Reported

6 kyu

SHA-256 Cracker

Beta

The Messenger's Oracle

6Greatlemer2 Issues Reported

Status:Waiting for issues to be resolved

Estimated Rank:
2 kyu

7 kyu

Decoding a message

4 kyu

Sneaky student #2

3 kyu

Defuse the bombs!

2,634Zyklus4 Issues Reported

4 kyu

Tap Into Mr. Mxyzinjin's Toy Safe

Beta

Cracking Vigenère: unknown language

7jharris37913 Issues Reported

Status:Testing & feedback needed

Estimated Rank:
3 kyu

Beta

Bob's Secret Cipher

Status:Testing & feedback needed

Estimated Rank:
6 kyu

Beta

A foot in the door - disable the SecurityManager

9DasBrain2 Issues Reported

Status:Testing & feedback needed

Estimated Rank:
4 kyu

Beta

Java Hacking: Hijack a JVM

Status:Awaiting approval

Estimated Rank:
1 kyu

3 kyu

Tap Into Mr. Mxyzinjin's Safe

5 kyu

Expected value #1

57MiguelRiazaValverde

Beta

Tap into Reivhax's robot

Status:Testing & feedback needed

Estimated Rank:
2 kyu

2 kyu

Tap into Mr. Mxyzinjin's Stream

Beta

Keys, their drawings and ancient symbols

Status:Testing & feedback needed

Estimated Rank:
3 kyu

5 kyu

Find the code and open the safe

2 kyu

Tap Into Mr. Mxyzinjin's Brain

3 kyu

Tap Into Mr. Mxyzinjin's Matrix

4 kyu

Variable Number of Arguments in C, without "va"

191Bubbler2 Issues Reported

6 kyu

Becoming a Real spy

6 kyu

NSA's Little Puzzle

44TeraCode3 Issues Reported

Beta

Kerckhoffs's principle

Status:Testing & feedback needed

Estimated Rank:
4 kyu

1 kyu

Mystery function #2

174tianshuo2 Issues Reported

2 kyu

Ruby’s Eleven

349duchess_of_objects

Object-oriented Programming

6 kyu

None shall pass

1,336adriaanbaelus