CeylonDemon 2.0 - new version chess engine

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CeylonDemon is a free UCI chess engine with Resonance, a dual-frame NNUE evaluator that reads every position through two feature transformers — one anchored on the side to move's own king, one on the opposing king — and reports the residual between them as an uncertainty signal the search consumes directly.
Author: Madushan Bhashana Dissanayake

CeylonDemon hasn’t been tested by us yet, but in the upcoming September 2026 season, it will compete in the qualifiers for the CEDR Chess Engine League.



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