Al Hopfer
Border-balance theory (NS-1)
A regular since 2008 and the community's border theorist. In 2022 he stated the exact condition this wiki calls the NS-1 border balance, backed by a fully documented 222-piece partial with a completed border.
IndependentNS-1 border balance (msg 10754)
This is a profile page. This researcher's contributions are documented across the wiki, from the records to the history, rather than gathered under their own byline.
See their entry in the Who's-who