3 free reviews. 3 deep dives. No card.

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• ✓3 free code reviews + 3 free Bug Hunt exercises — no card required
• ✓3 system design deep dives — free to read
• ✓AI-graded against a hand-authored senior-engineer rubric
• ✓Exercises show their available languages; most support Go, Kotlin, Python, Java, and C#