Author: Inuway
Focalors is an offline-first desktop chess application built around a trained NNUE engine with a hand-crafted evaluation fallback. Everything runs locally — no account, no network, no telemetry. This is the first real release: the core is working and I'm using it myself, but expect rough edges as the UX continues to evolve.
What's in this release
Local play against the engine at configurable strength, with a responsive board and clock.
Game review — step through any finished game and see per-move engine evaluation and best-move suggestions.
PGN import — paste a game from any source to run a full review.
Puzzles — tactics training from a local puzzle set.
Statistics & history — persistent SQLite-backed history of your games and stats over time.
UCI mode for use as an engine in external chess GUIs (focalors uci).
Cross-platform binaries for Linux (x86_64), macOS (aarch64), and Windows (x86_64), attached below.
Known limits & roadmap
The engine is playable and improves with the bundled NNUE, but strength tuning is ongoing.
The GUI is intentionally compact — some features (deeper analysis views, opening explorer, etc.) aren't there yet.
Performance work (parallel analysis, SIMD NNUE inference) is on the roadmap.
Contributions, bug reports, and feedback are all welcome.
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