codr Information

Codr is an online platform for training abstract thinking, problem solving, math and programming fundamentals through interactive puzzles and challenges. The user does not need any programming background, since one can learn to understand the code through basic logic, hints and trial & error. The challenges vary in complexity, ranging from easy to very hard. It's highly recommended for beginners to complete and fully understand the easy ones (in practice mode); since these teach the basics needed for solving the more challenging problems (ranked mode).