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Chess engine: 12.3 Cfish NNUE (Jurjevic)

Cfish - this is a C port of Stockfish.

Compiling Cfish
Compiling Cfish requires a working gcc or clang environment. The [MSYS2](https://www.msys2.org/) environment is recommended for compiling Cfish on Windows (see below on how to set up MSYS2).

Vafra Cfish
Robert Jurjevic maintains this Cfish clone (starting from Cfish 12). Robert has a long experience in maintaining Crafty (Prof Robert Hyatt) clone called Vafra (Robert's Crafty clone). Robert switched to Vafra Cfish clone which uses (as well as some later Vafra Crafty clones) the same NNUE architecture as Cfish 12, i.e., flipped (not rotated) HalfKP 256x2-32-32-1.

Author: Robert Jurjević   Rating JCER=3621

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