> Transcriptions from dead composers like Busoni are allowed in competitions. So if you're dead and gone, your transcription is a "work". If you're alive and playing in a competition it's not allowed, unless the student is making emendations to an already transcribed piece.

Huh, interesting... Do you happen to have a pointer to any more info/context on this or a link to a competition’s rules where they say this? I played piano for a long time (although never at anywhere near an international competition level) and I’ve never heard of this; it seems like a really bizarre rule to allow competitors to make arbitrary changes to an already-altered piece, but not allow any changes at all for a fully original one. I feel like I’m missing something.