October 11, 2026Practice
One topic map and plainer lessons
Learn, Practice, and Arena 90 now share one topic map. A cleared lesson points to practice problems and Arena 90, and every solve plays a full-screen finish.
What changed
- Learn, Practice, and Arena 90 now share one topic map. A cleared lesson points to practice problems and Arena 90, and every solve plays a full-screen finish.
- Lessons use shorter text and resume on the step you were on after a reload. A failed run explains the error in plain words and shows what you printed next to what was expected.
- A refresh no longer erases your code in queue battles, live classroom questions, mock interviews, or Full program practice.