Sykora is a chess engine written in Zig that implements the Universal Chess Interface (UCI) protocol. It provides a robust and efficient implementation of chess game logic and UCI communication.
Gihub:https://github.com/sb2bg/sykora Author: Sullivan Bognar
Sykora is a new engine, and we'll be testing it for the first time, so its performance potential isn't known yet. Keep an eye on our website.
Sykora 0.2.2 what's new?
Added
Added Bullet bootstrap and runner utilities to make NNUE training setup more repeatable.
Changed
Moved the engine to a stronger embedded NNUE setup with SYKNNUE3 support, retained SYKNNUE2 compatibility, and shipped a much larger network.
Reworked search internals with a static evaluation stack, pruning cleanups, SIMD-oriented NNUE updates, and harder SMP synchronization.
Refreshed the README and release/testing documentation around NNUE workflows and regression checks.
Fixed
Fixed a pruning regression after an Internal Iterative Reduction experiment was reverted.
Fixed king-bucket perspective handling in NNUE evaluation.
Fixed CI tag resolution and release-test workflow behavior.

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