Dynamic promotion - Lielow

[AlekErickson]

The feature to support would be dynamic promotion (a crown, denoting royalty, changing to another piece after a trigger, in this case the trigger would be owning a uniquely highest-value piece).

The rules can be found here:
https://boardgamegeek.com/boardgame/349408/lielow

An online AI opponent can be found here:
https://quuxplusone.github.io/Lielow/

The game has 2 communities of players - at the Abstract Play website and at Board Game Arena.