KataGo (AlphaZero-like AI) for every board game. Gomoku&Renju(KataGomo), Hex(KataHex), and connect6, ataxx, breakthrough, tiaoqi, capture-go, nogo, and others
High-performance Mahjong win detection, waiting-hand calculation and AI discard algorithm based on lookup tables, with behavior-identical Java / Go / C++ implementations and a live web demo.