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Practical guides

Understand game rules, browser technology, privacy, and common data tasks.

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Each guide connects to something you can use or play on the site.

Follow the loop that turns input, state, and rendering into a playable browser experience.

Understand when browser-only processing is faster, simpler, and more private.

Use constraints, reversible choices, and small observations across many logic games.

Learn how turns, five-in-a-row wins, board size, and common rule variations work.

Build stronger positions with open lines, forcing moves, and balanced attack and defense.

Compare the two related games, including opening rules and restrictions for the first player.

Turn compact JSON into readable, valid data and understand what a formatter changes.

Recognize missing quotes, trailing commas, invalid values, and other parsing failures.

Choose compact or readable JSON based on transport, storage, debugging, and review needs.