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What's the difference?

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All stages · Demo 260

ABN mill

Choice company / charity / other. An Australian ABN is eleven digits; subtract one from the first, then weight 10…19. Jev never mods 89. Ten digits need 11.

ChoiceABN mod-89 in JS

A digit tape. 51824753556 books a company. A last-digit flip rejects. Ten digits never pass.

replaykind —abn —

STANDBY

All 4056 stages

Educational stage on jev.page — not the official TypeSafe console. Live calls go to POST https://api.typesafe.ai/v1/systemone from your browser when you paste a key. Without a key, the stage plays a recorded decision shaped like jev-1.13.0. Jev does not write the UI copy.