Learn SQL SQL Playground Interview Practice Puzzles^hot Articles^pdf Case Studies

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Learn SQL SQL Playground Interview Practice Puzzles^hot Articles^pdf Case Studies

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Learn SQL SQL Playground Interview Practice Puzzles^hot Articles^pdf Case Studies

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Learn SQL SQL Playground Interview Practice Puzzles^hot Articles^pdf Case Studies

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CHESS SCANDAL - Advanced

♟️Metro Chess Club: The Sandbagger

A club champion's rating mysteriously craters right before a bracket cutoff. Follow the losing streak to find out why.

SQL skills:Window functionsRunning totalsSelf joins

5 chapters in this story - requires login to play

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// keep the streak going

Next puzzles to try

New crime scenes, heists, and mysteries — pick your next case file.

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Meridian Products: Past the Limit

PRODUCT SAFETY COVER-UP — A product keeps shipping well past the point it should have been pulled from shelves. Find out who kept signing off.

Customs Hold: The Smuggling Ring

SMUGGLING INVESTIGATION — Cargo keeps arriving mislabeled, and what's inside is illegal. Trace the shipments back to the exporter running the operation.