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High level architecture

The project has the following directory layout (under src/):

• chess/ - Contains the chess logic, including the board representation and the movegen. These types are used in the search and backend APIs and therefore are shared between them.
• search/ - Contains the search algorithms.
• neural/ - Contains the neural network backend implementations.
• utils/ - Contains assorted utility code, such as logging, command line parsing, etc.
• selfplay/ and trainingdata/ - Contains code related to self-play and training data generation.
• tools/ - Contains code for other non-UCI tools, such as network converters.

Entrypoint

The entrypoint of the engine is main.cc.