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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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14 challenges matching your filters
Clear topic filter- Multiple ChoiceIntermediate
OCP with real trade-offs
architecturesolidocp - Multiple ChoiceIntermediate
LSP: the invariant about preconditions
architecturesolidlsp - Multiple ChoiceIntermediate
ISP: fat interface vs client-specific ports
architecturesolidisp - Multiple ChoiceIntermediate
DIP: direction of dependency arrows
architecturesoliddiphexagonal - Multiple ChoiceIntermediate
OCP via data, not classes
architecturesolidocp - Multiple ChoiceIntermediate
DIP and the composition root
architecturesoliddip - Multiple ChoiceIntermediate
Tell, Don't Ask vs getters
architecturesolidencapsulation - Code AnalysisIntermediate
Violated LSP with strengthened precondition
architecturesolidlsp - Code AnalysisIntermediate
Coupling leak: vendor type in domain
architecturesoliddiphexagonal - Code AnalysisIntermediate
Strategy gone wrong: enum switch
architecturesolidocp - Code AnalysisIntermediate
LSP: widening (not narrowing) can also break
architecturesolidlsp - Code AnalysisIntermediate
Analyze: LSP behavioral subtyping break
lspsolidsubtyping - Code AnalysisIntermediate
Analyze: SRP multiple reasons to change
srpsolidcohesion - Code AnalysisIntermediate
Fat interface / ISP violation
ispsolidcode-analysis
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