Welcome to CoderCharts.com
CoderCharts.com provides a platform for developers and engineers to train and develop coding skills, solve challenging puzzles, win prizes, hang out and socialize with other coders.
It's free to use, simply type into our online source-code editor or import your source-code to solve a puzzle. Our system automatically grades your solution and scores it based on the program's correctness, speed, and memory usage.
Enter our monthly contests to win prizes, such as an iPad.
Submitting the best solutions and solving multiple puzzles in multiple languages increase your chances of winning. Read the contest rules for more details.
Improve your skills
Our puzzles are of various difficulty levels (Easy, Novice, Medium, Hard, and Expert). The number of points gained for solving a puzzle is proportional to its difficulty, so more difficult puzzles are worth more points. Visit our forums if you need help or have questions. Train on past puzzles or compete in our current contests. We design our contests to favor ingenuity over knowledge, so everyone has a chance to win.
Invite your friends to join CoderCharts and gain points in the Social Leaderboard.
Let people know what you're capable of. Solve puzzles, share your score, contribute to forums. It lets you get noticed by other programmers and even recruiters and companies looking to hire.