TalkChess.com

[Ted Wong]

The Engine folder has the sources for the actual chess engine. Inside it has iphone.mm, which is where you need to look at. In the iOS version, the interface doesn't send the UCI command via process piping, the commands are saved in internal queues defined in EngineController.mm as "commandQueue". The commands are passed to command_to_engine in iphone.mm which directs the inputs to the engine.

The Chess folder has the bitboard implementation. This is necessary for checking invalid moves attempted by the user without sending an illegal move to the engine.

In order for the latest SF to work, actually for any kind of UCI engine to work. You just need to copy the latest SF sources into the Engine folder. Make sure that the handleCommand() function in the new sources are still there. Also make sure when the engine outputs UCI command, you replace the code with making a call to iphone.mm.