Rating Lists
This page is the rating hub of the IJCCRL chess engines ratings lists ecosystem. It preserves the split between the Derived Stockfish Track and the Original UCI Track, separates rating surfaces by time control, and exposes the rating publication status without pretending scientific closure where the underlying match base is still provisional, event-bound or under rebuild.
Reading rule
- Rating lists are technical publication surfaces, not promotional pages.
- They must state track, time control, status, sample maturity and methodological scope clearly.
- Where the underlying match base is still incomplete or methodologically unstable, the rating surface must read as provisional, event-stage or under rebuild.
- Scientific closure should only be claimed when the competition base is sufficiently homogeneous, auditable and separated by track.
Operational doctrine
- Derived branch: Derived Stockfish Track.
- Original branch: Original UCI Track.
- Controls: Classical, Blitz and Bullet.
- Closed outputs: route to Downloads, Archive and Winners when appropriate.
Rating Publication Structure
Track / ControlDerived Stockfish Track
These surfaces are intended for rating publication within the derived branch of the IJCCRL Arena Series. Their tables must stay separate from the Original UCI Track and must not be treated as a universal computer-chess strength scale.
Use separate rating pages by time control, but do not claim final scientific authority until the regular-phase and cross-play base is sufficiently consistent and auditable. Knockout audits may be published as support records without rewriting the official league Elo surface.
Original UCI Track
These surfaces are intended for rating publication within the original branch of the IJCCRL Arena Series. This branch remains the primary international lane for original UCI engine competition and must stay separated from derived-engine history.
Current Rating Surfaces — May 2026
Publication stateCurrent live rating authority
The rating hub now distinguishes mature official surfaces from provisional event-stage surfaces. Final event packs and match audit records support the rating ecosystem, but they do not automatically convert an event result into a universal rating-list claim.
Original UCI Track — current surfaces
The Original UCI Track now contains active and/or publication-valid rating surfaces that must be exposed from this hub while keeping provisional status visible where the competition is still running.
Official Classical surface currently closed at 180/180 in the published cycle. This is the strongest current Original UCI rating reference and should remain separated from derived-engine data.
Provisional Blitz surface currently published as an in-progress audit surface at 310/660. It is useful for following the event, but it must remain labelled as provisional while the regular phase continues.
Derived Stockfish Track — current surfaces
The Derived Stockfish Track continues to preserve its own league Elo and knockout audit records. The derived branch must remain visible but secondary, and its results must never be merged into the Original UCI historical rating line.
The closed league-stage Bullet surface is based on 918 games, 18 engines, 102 games per engine and an official base of 3700. Knockout results are audit records and must not overwrite the league Elo archive.
The April closed final and its downloadable event pack support the historical record, but the final itself is not a standalone universal rating authority. It belongs to Archive, Winners and Downloads, while rating interpretation stays in the rating surface.
Methodological Safeguards
Reliability rulesWhat the hub must prevent
- Mixing Original UCI and Derived Stockfish data in the same historical line.
- Presenting provisional event-stage Elo as final scientific authority.
- Using final match winners as a substitute for rating-list methodology.
- Collapsing Bullet, Blitz and Classical results into a single context-free claim.
What the hub must expose
- Track identity.
- Time control.
- Publication status.
- Game count or progress marker where applicable.
- Links to events, downloads, archive and rules when the rating surface depends on support material.