• kyu4
• kyu5
• kyu6
• kyu7

source: Codewars Wiki Honor & Ranks and Codewars Wiki Kata Ranking

Ranks are used to indicate progression and difficulty. Code Warriors complete Kata which are assigned a rank, which in turn earns them a higher rank once they complete enough of them. There are two classes of ranks, Kyu and Dan. You begin with Kyu at level 8 and work your way down to level 1. Then you progress to Dan, where you work your way up from level 1 to level 8.

6 kyu kata represent a novice programming level. At this level the kata will start to include more advanced algorithmic challenges and more complex language features. It includes:

• Complex language features (closures, scopes, monads, etc)
• Complex OOP/Functional concepts
• Basic Design Patterns
• Complex Regular Expressions

5 kyu kata represent a novice programming level. At this level the kata are similar to 6 kyu but more challenging. It includes:

• Complex language features that require mature OOP/Functional concepts
• Advanced OOP/Functional concepts
• Complex Design Patterns
• Advanced regular expression usage

4 kyu kata represent a competent programming level. At this level the kata begin to take some serious thought to complete. They include tasks that may handle:

• Computer science concepts utilizing complex algorithms
• Advanced design patterns
• Understanding intricate business requirements
• Advanced concepts such as concurrency, parallelism, meta programming and cryptography

3 kyu kata represent a competent programming level. At this level the kata are similar to 4 kyu but are more challenging. They include tasks that may handle:

• Computer science concepts utilizing advanced algorithms
• Ability to implement advanced requirements in a scalable fashion
• Basic AI/machine learning algorithms
• Detailed usage of advanced concepts such as concurrency, parallelism and cryptography

2 kyu kata represent a proficient programming level. At this level kata require a mature understanding of complex programming concepts - concepts such as:

• Complex AI/machine learning algorithms
• Reverse engineering techniques
• Basic interpreters and compilers
• Basic mini-programs with multiple feature requirements (such as a basic markdown parser)

1 kyu kata represent a proficient programming level. At this level kata are similar to 2 kyu but more challenging. They may include concepts such as:

• Advanced AI/machine learning algorithms
• Complex interpreters and compilers
• Complex Mini-programs with multiple feature requirements (such as a complete markdown parser)