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What's the difference?

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All stages · Demo 396

Cyprus TIN

Choice cy / vat / other. Eight digits plus check letter. Powers of two, sum%26. Jev never maps A–Z. Eight digits need the letter.

ChoiceCY 1-2-4 in JS

A digit tape. 12345678Z books a Tax Department plate. A in the check slot rejects. Eight digits never pass.

replaykind —cy —

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.