Releases

Releases

Versions are MAJOR.MINOR.PATCH: MAJOR for incompatible changes (protocol, move/board format, interface), MINOR for new features or measurable changes in strength or behaviour, PATCH for fixes. The version lives in src/version.h and is reported over UCI on the id name line.

version	change	measured
1.0.0	first release — the engine	—
1.1.0	king safety (pawn shield)	+50 Elo
1.2.0	pawn structure (passed, doubled, isolated)	+35 Elo
1.2.1	fix elapsed_ms 32-bit overflow	bugfix

Each release is tagged vX.Y.Z with a source tarball on the releases page.

Release checklist

1. Bump src/version.h and add a CHANGELOG.md entry.
2. Commit; tag vX.Y.Z; push the branch and the tag.
3. Build the tarball with git archive and attach it to a GitHub release.
4. Rebuild on the target machine (XL C) and run make check.
5. Update the project site — version, download link, and any figures the change affects. (Learned the hard way: a stale page outlives the release.)