Basilisk 1.2.2 - new version chess engine

Basilisk, a UCI chess engine written in C++23.

Estimated strength: ~2400 ELO (single-thread calibration against Stockfish; FIDE Master / International Master level).

Author: Miloslav Macůrek

Basilisk 1.2.2 what's new?

Basilisk 1.2.2 is a release-packaging update that simplifies CPU-specific binaries while keeping fast local builds available for users who compile manually.

Changed

Simplified x86_64 release assets to three practical choices:

generic

AVX2

PEXT

Added/kept local CMake presets for optimized manual builds:

release

release-avx2

release-pext

Local CMake release builds remain native by default using -march=native.

GitHub Actions release assets are built portable with PORTABLE_BUILD=ON.

x86 feature builds now check CPU support at startup and print a clear error if the CPU cannot run that binary.

Available Assets

For x86_64 users:

Use the generic build if unsure.

Use AVX2 for most modern Intel/AMD CPUs.

Use PEXT on CPUs with fast BMI2/PEXT support, typically Intel Haswell+ or AMD Zen 3+.

For ARM users:

Use the matching aarch64 asset for Linux, Windows, or macOS.

Basilisk 1.2.2 download