CHESS AI

Betafish is a free AI chess engine that is written in JavaScript and uses the Negamax algorithm. It is estimated to be around 1800-2000 Elo, depending on the thinking time afforded. Betafish has a number of features that make it a powerful chess engine, including move ordering using the MVV-LVA heuristic, principal variation search, quiescence search, iterative deepening, piece-square tables, and tapered evaluation.