How it works
Pick a set - Sprint, Classic 7, Circuit, Heavy Day, or Marathon - and solve every problem back-to-back as fast as you can. Each set is a fixed sequence so two runs are directly comparable. Share your time as a URL; the recipient runs the same problems and races your ghost.
Sets
- Sprint - short and punchy, easy warmup
- Classic 7 - seven canonical interview shapes
- Circuit - mixed difficulty, balanced topics
- Heavy Day - harder problems, longer runs
- Marathon - the full grind