64 bits Chess Engines derived of StockfishWe do not developer this Engines,We just compiled/adapted them for androidThis Chess Engines works on all GUIs having open exchange protocol, created by Gerhard Kalab.One installation works on multiple GUIs.Install engines and run your favorite GUI (Graphical User Interface), chess board.UnInstall app to remove all engines. Updating the app updates all engines.Being a library this app does not need has a view/layout, need a Chess Board App.The engines will appear in the engine list of the GUIWe recommend that you test our updated GUIs:https://play.google.com/store/apps/details?id=app.packs.ajedrezmotores&hl=eshttps://play.google.com/store/apps/details?id=app.packs.adminpgn&hl=esalso you can see the gui of Mr. Kalab Chess pgn masterand some other free guiarchitectures: arm64-v8aEngines included: (v20170221)BrainFish 20170128 Thomas Zipproth, support Cerebellum book Cfish 20170105 Ronald de Man, fast engineCorchess 20170127 I. IvecMcBrain 20170127 Michael Byrne, support Limit_Strength (ELO) and Cerebellum bookNayeem 20170115 Mohamed Nayeem, support Cerebellum bookSugarR 20170214 Marco ZerbinatiApi min 21 (5.0 Lollipop) and support 64 bits Arm instructionsfor 32 bits install Other (Stockfish) EnginesThere may be problems with chessbasethese engines are on github