Docs & help

From zero to your first graded submission in about two minutes.

A map of the Katabench app, where each kind of work lives, and how navigation changes between desktop and mobile.

A detailed tour of the catalog, problem brief, hints, editor, custom inputs, results, reference solutions, and mobile workspace.

How code is shaped on the platform: the Solution class, the C# version and libraries you can use, keyboard shortcuts, and autosave.

Time budgets, allocation tracking, hidden tests, and what each result status means.

What Algorithms, Database / EF, Refactoring, Architecture, Secure Coding, Design Principles, and Test Writing each train, and how each one grades you.

A practical guide to passing the time and allocation gates: pick the right complexity first, then cut the garbage your code leaves behind.

How to choose, preview, start, continue, and complete a curated puzzle curriculum while keeping open practice available.

How courses, Labs, lessons, temporary workspaces, guides, terminals, checks, progress, and session recovery fit together.

How the dashboard, activity history, daily challenge, quests, achievements, leaderboards, gems, cosmetics, and badges work.

What the Free plan includes, what Pro unlocks, what counts against your daily quota, and how billing and refunds work.

Fix common problems with Run, Submit, compilation, timeouts, results, saved code, quotas, learning paths, Labs, and billing.

Quick answers to the questions people ask most: what the platform is, how grading works, what's free, and how your code and data are handled.