Sharpen your coding skills

Challenge yourself on small coding exercises called "kata". Each kata is crafted by the community to help you strengthen different coding techniques. Master your current language of choice, or quickly pick up any of the 55+ programming languages supported.
 

An engaged software development community

Codewars is a collective effort by its users. They are creators—authoring kata to teach various techniques, solving kata with solutions that enlighten others, and commenting with constructive feedback.