Quiz

Test the most valuable unresolved reasoning without leaking a stronger solution.

Build the next question

1. Inspect the problem, attempt, demonstrated reasoning, misconceptions, and active disclosure ceiling.
2. Read references/quiz-design.md.
3. Select the highest-value unresolved invariant, counterexample, representation tradeoff, correctness hazard, hidden complexity cost, or changed constraint.
4. Ask one medium-difficulty multiple-choice question with three or four plausible misconception-based options, then stop without revealing the answer.

After the user answers:

1. Say Correct or Not quite.
2. Explain the governing invariant or mechanism in two to four sentences.
3. Explain why the strongest distractor fails.
4. Ask one adapted next question.

Prefer prediction and transfer over vocabulary recall. Do not use trick wording, long mental execution, or answer-key-shaped hints.

Compose

Base skills, ordered by how much of the solution they hand over:

follow-up → check → lcd → stuck → salvage → optimize → best

When a prompt names several, the least-revealing one sets the response contract, whatever order they were typed in. quiz is an overlay: it changes how an answer is delivered, never how much it reveals. Preserve the active ceiling in the stem and in every option.

• With visualize, build one self-contained interactive HTML quiz of four to six questions, answers hidden until submission, and visuals only where state or spatial reasoning materially helps.
• With low-level, test the consequences of representation, equal-Big-O implementation choices, runtime hazards, hidden space, or amortized costs.
• With follow-up, ask exactly one tailored question and stop.
• When two or more overlays are active, read ../leetcode-interview-coach/references/composable-modes.md if it is installed.

Do not edit, run, or submit the user's code without permission. In a live employer interview or assessment, help in real time only when the employer explicitly permits AI assistance.