The jump to version 3 brought several significant upgrades that changed the "sparring" experience for enthusiasts: Building my dream chess computer Part II - Google Groups

PicoChess v3 is the current major release of the open-source software that transforms a Raspberry Pi into a dedicated, high-end chess computer. Developed by a community of enthusiasts including Dirk Mollmann and Randy Reade, this version modernizes the project by integrating powerful new engines like Stockfish 16 and Leela Chess Zero (Lc0), while expanding its compatibility with classic retro chess engines. Core Features of PicoChess v3

Before PicoChess, playing against a computer with real pieces required either a $2,000 dedicated e-board (like the DGT board) or a clumsy two-step process: look at the screen, move the physical piece, then move the computer’s piece for it. PicoChess v3 eliminated the screen.

The software scans for connected USB serial devices and known Bluetooth Low Energy (BLE) boards (like the DGT Pegasus or the Chessnut Air) and auto-configures the input. It is genuinely plug-and-play.