Are there any chess engines with customizable evaluation functions?

This page summarizes the projects mentioned and recommended in the original post on /r/chess

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  • Stockfish

    A free and strong UCI chess engine

    • Stockfish is super complex and its eval function is 1k lines of code (see here: https://github.com/official-stockfish/Stockfish/blob/master/src/evaluate.cpp).

  • StockNemo

    A C# Chess Engine Finding Good Moves.

    • https://github.com/TheBlackPlague/StockNemo, eval function is 76 lines of code. and simpleeval https://github.com/vondele/Stockfish/tree/simpleEval a modified version of stockfish which just uses piece value as an eval function (1, 3, 3, 5, 9)

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  • Stockfish

    UCI chess engine (by vondele)

    • https://github.com/TheBlackPlague/StockNemo, eval function is 76 lines of code. and simpleeval https://github.com/vondele/Stockfish/tree/simpleEval a modified version of stockfish which just uses piece value as an eval function (1, 3, 3, 5, 9)

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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