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Coding Challenges
5,893 curated questions across every arena — browse by topic, then jump into a live 3-minute battle to put them to the test.
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7 challenges matching your filters
Clear topic filter- Multiple ChoiceIntermediate
Repository vs DAO
architecturedesign-patternsrepository - Multiple ChoiceIntermediate
Repository vs Unit of Work roles
repositoryunit-of-work - Multiple ChoiceBeginner
Abstraction leakage
abstraction-leakagerepositoryorm - Code AnalysisIntermediate
Repository leaking persistence
architecturedesign-patternsrepository - Code AnalysisHard
Repository per aggregate only
architecturedddrepository - Code AnalysisIntermediate
Analyze: DIP ownership direction
diprepositoryhexagonal - Code AnalysisBeginner
Abstraction leakage in repository
abstraction-leakagerepositorycode-analysis
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Every challenge here is drawn from the live Code Royale pool. Review a question, then head to the arena to answer under pressure against a real opponent — 3-minute matches, Elo ranking, and badge tiers on the line.