US Chess Certifies ChessNoteR Nexus 6 and Nexus 9 v2.3.0 https://new.uschess.org/news/us-chess-certifies-chessnoter-nexus-6-and-nexus-9 Certificationhttps://new.uschess.org/sites/default/files/media/documents/chessnoter_approvalletter_2022_10_17_final.pdf
