# Awesome Challenges A curated list of algorithmic challenges websites. - [Advent of Code](https://adventofcode.com) - [CareerCup](https://www.careercup.com/page) - [CheckiO](http://www.checkio.org/) - [CodeCombat](https://codecombat.com/) - [CodeFights](https://codefights.com/) - [Codeforces](https://codeforces.com/) - [CodeHunt](https://www.codehunt.com/) - [Codewars](http://www.codewars.com/) - [Codility](https://codility.com/programmers/challenges/) - [Coding Mystery](https://codingmystery.com/) - [CodinGame](https://www.codingame.com/start) - [CSSBattle](https://cssbattle.dev/) - [exercism.io](http://exercism.io/) - [Free Code Camp](https://www.freecodecamp.com/) - [HackerRank](https://www.hackerrank.com/) - [Interview Cake](https://interviewcake.com/) - [InterviewBit](https://www.interviewbit.com/) - [Kattis](https://open.kattis.com/) - [LeetCode](https://leetcode.com/) - [Project Euler](https://projecteuler.net/) - [ROSALIND](http://rosalind.info/) - [Screeps](https://screeps.com/) - [smarterer](http://smarterer.com/tests/categories/Programming) - [SoloLearn](https://sololearn.com) - [TheHuxley](https://www.thehuxley.com/) - [topcoder](https://www.topcoder.com/challenges/) - [URI Online Judge](https://www.urionlinejudge.com.br/judge/en/login) ## License Based on [bayadin/awesome-awesomeness](https://github.com/bayandin/awesome-awesomeness) repository. [![Creative Commons License](http://i.creativecommons.org/l/by/4.0/88x31.png)](http://creativecommons.org/licenses/by/4.0/) This work is licensed under a [Creative Commons Attribution 4.0 International License](http://creativecommons.org/licenses/by/4.0/).