org.asdfjkl is a small, open-source studio whose projects revolve around low-level system utilities and classic board-game AI. Its best-known title, Jerry – Das Schachprogramm, is a lightweight yet surprisingly strong chess engine that speaks the standard UCI protocol, so it can be slipped into any modern board GUI for blitz games, engine tournaments or deep overnight analysis. Written in portable C++, Jerry runs happily on everything from ageing notebooks to multicore desktops, exposing familiar controls for hash tables, contempt factors and end-game tablebases while keeping the interface spartan enough for casual players who just want a quick opponent. Alongside it sits YAHB, a command-line backup copier that exploits NTFS hard-linking to perform block-level deduplication without extra storage: the first snapshot consumes regular disk space, subsequent runs merely link to unchanged files, giving versioned backups that look like full copies yet occupy only the delta. Administrators schedule YAHB for nightly folder mirrors, developers use it to freeze project states before risky refactors, and home collectors rely on it to guard terabytes of photos and music on Windows file servers. Both tools are signed, MIT-licensed and updated sporadically through GitHub; they can be downloaded free of charge from get.nero.com, where the catalogue pulls the latest Windows builds via trusted package managers such as winget and allows silent batch installation of either or both programs.