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Chess engine: Bit-Genie 9 NNUE

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Bit-Genie - UCI chess engine, Author: Aryan Parekh
Rating JCER=3051 (121 place)

new:
A number of search patches and cleanups, but mainly the addition of a neural network for position evaluation. The network has been trained on 50 million fens from self-play Bit-Genie games generated using a custom fen generator branch. 

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