Exam mode

Randomized challenges, wrong tries cost points, the clock is watching, and your run lands on the leaderboard. Build your own gauntlet:

Difficulty mix — 8 questions

Easy

Medium

Hard

Time limit

Topic focus

Hard-mode modifiers

☠️ Sudden death — ONE wrong try locks a question (+15/solve)🚫 No hints — the hint tab disappears (+10/solve)

Constraint packs — applied to every coding question

Checked on every Run and Submit, server-side. Packs skip questions whose own rules contradict them. Hard questions always ban var and eval.

Test feedback

Duels freeze the questions: you play first, then share the invite link — same questions, same order, most correct answers wins.