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What's the difference?

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All stages · Demo 333

JMBG mill

Choice jmbg / tmp / other. Thirteen digits; remainder 10 or 11 becomes 0. Jev never mods 11. Twelve digits need 13.

ChoiceJMBG mod-11 in JS

A digit tape. 0101985710008 books an MUP plate. A last-digit flip rejects. Twelve digits never pass.

replaykind —jmbg —

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.