This page is the official download hub for IJCCRL Arena Series event packs. Final tournament archives and audited provisional PGN or rating-surface packs are kept clearly separated so users can download current material without confusing it with closed final output.
Packs from this IJCCRL Arena Series branch are listed here when they are final publication objects or clearly labelled audited provisional PGN / rating-surface packages.
Final audited Round of 16 Match 2 package from the Derived Stockfish Track M16 bracket. SF TACTICAL 270426 defeated RapTora 6 by 25.5–24.5 over 50 closed Blitz 5+2 games. The match was audited under IJCCRL fixed mirrored match rules: pair ratio 0, exact 25 White / 25 Black games per engine, 25 mirrored opening units closed, openingIndex 50 at closure, Syzygy TB 1–6, no pending scheduler state and no infrastructure loss recorded.
Final audited Round of 16 Match 1 package from the Derived Stockfish Track M16 bracket. Dark SisTer 15.3 defeated Deepalienist-4.70-190526-sse41popcnt by 25.5–24.5 over 50 closed Blitz 5+2 games. The match was audited under IJCCRL fixed mirrored match rules: pair ratio 0, exact 25 White / 25 Black games per engine, 25 mirrored opening units closed, openingIndex 50 at closure, Syzygy TB 1–6, no pending scheduler state and no infrastructure loss recorded.
Published download package from the Bullet Derived Stockfish Track. This entry lists the public archive using the exact supplied path only. No additional result, score, qualifier or audit statistic has been inferred for this pack inside the downloads index.
Audited provisional rating-surface package from the live Blitz 5+2 Derived Stockfish Track league. This publication pack is based on the provisional clean cut of 202 games / 101 complete mirrored units from the 1026-game regular-season contract, with 19 participating engines and Elo base 3700. The audit state preserves the adjudicated Deepalienist win over Dark SisTer at openingIndex 72, removes the later duplicate replay from the public rating cut, and excludes the currently incomplete mirrored unit until its second leg is closed.
Final audited championship package from the Bullet Derived Stockfish Track. Killfish PB 010426 defeated DarkSeid v10.7 SE by 107.0–93.0 over 200 closed Bullet 60+2 games. The final was audited under IJCCRL fixed mirrored match rules: pair ratio 0, exact 100 White / 100 Black games per engine, 100 mirrored opening units closed, openingIndex 200 at closure, Syzygy TB 1–6, and no pending scheduler state after closure. The audit result is PASS.
Published audited semifinal package from the Bullet Derived Stockfish Track. Killfish PB 010426 defeated Brainlearnjrc-2.10-170426-sse41popcnt by 50.5–49.5 over 100 closed Bullet 60+2 games. The match was audited under IJCCRL fixed mirrored match rules: pair ratio 0, 50 White / 50 Black games per engine, 50 mirrored units closed, openingIndex 100 at closure, Syzygy TB 1–6, and no pending scheduler state after closure. Killfish PB 010426 qualifies for the final.
Published download package from the Bullet Derived Stockfish Track semifinal stage. This entry lists the public archive using the exact supplied path only.
Published download package from the Bullet Derived Stockfish Track quarterfinal stage. This entry lists the public archive using the exact supplied path only.
Final audited semifinal-qualification package. Brainlearnjrc-2.10-170426-sse41popcnt defeated SpecTral 12 by 54.0–46.0 over 100 closed Bullet 60+2 games. Audit PASS.
Final audited semifinal-qualification package. Killfish PB 010426 defeated StockfishJRC-1.80-190426-sse41popcnt by 50.5–49.5 over 100 closed Bullet 60+2 games. Audit PASS.
Final audited semifinal-qualification package. Revolution-5.40-190426-sse41popcnt defeated CorChess 5 dev-20260227-3d8f4977 by 52.0–48.0 over 100 closed Bullet 60+2 games. Audit PASS.
Final audited knockout package. Brainlearnjrc-2.10-170426-sse41popcnt defeated Hlamnick 070426 by 52.0–48.0 over 100 closed Bullet 60+2 games. Audit PASS.
Final audited knockout package. DarkSeid v10.7 SE defeated Brainlearn 31 by 52.5–47.5 over 100 closed Bullet 60+2 games. Audit PASS.
Final audited knockout package. Artemis 28.2TR_PrO defeated HypnoS 120126 by 52.5–47.5 over 100 closed Bullet 60+2 games. Audit PASS.
Final audited knockout package. StockfishJRC-1.80-190426-sse41popcnt defeated Stockfish 18 by 53.0–47.0 over 100 closed Bullet 60+2 games. Audit PASS.
Final audited knockout package. SpecTral 12 defeated RapTora 6 by 57.5–42.5 over 100 closed Bullet 60+2 games. Audit PASS.
Packs from this IJCCRL Arena Series branch are listed here when they are final publication objects or clearly labelled audited provisional PGN / rating-surface packages.
Published league download package from the Bullet 60+2 Original UCI Track. This entry uses the exact supplied 24-may archive path and records the current league publication object without renaming the file. The pack belongs to the Original UCI Track league surface and is listed separately from knockout match packs.
Final audited semifinal package from the Bullet 60+2 Original UCI Track knockout stage. Obsidian dev-16.15 defeated Reckless 0.10.0-dev-6abcff05 by 53.0–47.0 over 100 closed Bullet 60+2 games. The match was audited under IJCCRL fixed mirrored match rules: pair ratio 0, exact 50 White / 50 Black games per engine, 50 mirrored opening units closed, openingIndex 100 at closure, Syzygy TB 1–6, and no pending scheduler state after closure. The audit result is PASS; no unfinished game, no half mirrored unit and no scheduler mismatch were identified. Obsidian dev-16.15 qualifies for the Bullet Original UCI Track final, where it will play Stockfish 18.
Final audited semifinal package from the Bullet 60+2 Original UCI Track knockout stage. Stockfish 18 defeated Clover 9.1 by 67.0–33.0 over 100 closed Bullet 60+2 games. The match was audited under IJCCRL fixed mirrored match rules: pair ratio 0, exact 50 White / 50 Black games per engine, 50 mirrored opening units closed, openingIndex 100 at closure, Syzygy TB 1–6, and no pending scheduler state after closure. The audit result is PASS; Stockfish 18 qualifies for the Bullet Original UCI Track final.
Final audited quarterfinal package from the Bullet 60+2 Original UCI Track knockout stage. Clover 9.1 defeated PlentyChess 7.0.1 by 56.0–44.0 over 100 closed Bullet 60+2 games. The match was audited under IJCCRL fixed mirrored match rules and Clover 9.1 qualified for the semifinals.
Final audited quarterfinal package from the Bullet 60+2 Original UCI Track knockout stage. Reckless 0.10.0-dev-6abcff05 defeated Berserk 13 by 56.5–43.5 over 100 closed Bullet 60+2 games. Audit PASS. Reckless qualified for the semifinals.
Final audited quarterfinal package from the Bullet 60+2 Original UCI Track knockout stage. Obsidian dev-16.15 defeated Caissa 1.24 POPCNT by 62.0–38.0 over 100 closed Bullet 60+2 games. Audit PASS. Obsidian qualified for the semifinals.
Final audited regular-season package from the Bullet 60+2 Original UCI Track. The event contains 270 games, 10 engines, 54 games per engine, exact 27 White / 27 Black colour balance per engine, and fixed mirrored opening structure with pair ratio 0. The scheduler closed at openingIndex 270 with pending null, 135 / 135 mirrored units closed, and the Top 8 knockout bracket derived from the official regular-season order.
Final audited quarterfinal package from the Blitz 5+2 Original UCI Track knockout stage. PlentyChess 7.0.66 defeated Integral v7.0.0-dev by 56.0–44.0 over 100 closed Blitz 5+2 games. Audit PASS.
Final audited championship package from the Classical Original UCI Track. Stockfish 18 / Stockfish dev-20260218-a6d055d7 defeated Obsidian dev-16.15 by 13.0–11.0 over 24 closed Classical 40m+2s games. Audit PASS.
Final audited package from the completed Blitz 5+2 Original UCI VPS regular season. The event contains 660 games, 12 engines, 110 games per engine, exact 55 White / 55 Black colour balance per engine, and fixed mirrored opening round-robin structure with pair ratio 0. Ratings are published on the Elo base 3700 Ordo reference scale.
Final audited knockout package from the fourth Original UCI Track qualifier match. Caissa 1.24 POPCNT defeated PlentyChess 7.0.1 by 13.5–10.5 over 24 closed Classical 40m+2s games. Audit PASS.
Final audited knockout package. Reckless 0.10.0-dev-6abcff05 defeated Dragon 3.3 by 15.5–8.5 over 24 closed Classical 40m+2s games. Audit PASS.
Final audited knockout package. Obsidian 16.0 defeated Berserk 13 by 13.5–10.5 over 24 closed Classical 40m+2s games. Audit PASS with identity normalization.
Final audited knockout package. Stockfish dev-20260218-a6d055d7 defeated Clover 9.1 by 14.5–9.5 over 24 closed Classical 40m+2s games. Audit PASS.
Packs from this IJCCRL Arena Series branch are listed here when they are final publication objects or clearly labelled audited provisional PGN / rating-surface packages.
Final audited package from the closed Bullet Derived Stockfish Track league stage. The event contains 918 games, 18 engines, exact 51 White / 51 Black colour balance per engine and fixed mirrored opening round robin pairing with pair ratio 0.
Audited knockout update. Revolution-5.40-190426-sse41popcnt defeated Wordfish-4.70-130426-sse41popcnt by 59.5–40.5 over 100 closed Bullet 60+2 games.
Audited knockout update. CorChess 5 dev-20260227-3d8f4977 defeated Dark SisTer 11 by 51.0–49.0 over 100 closed Bullet 60+2 games. Audit PASS with symmetric readyok timeout note.
Audited knockout update. Killfish PB 010426_sse41_popcnt defeated Cortex ZKT 11.11 SSE41 by 54.5–45.5 over 100 closed Bullet 60+2 games. Audit PASS.
Killfish PB 260126 defeated Brainlearnjrc-1.90-110326-sse41popcnt by 30.5–29.5 in a 60-game final under 40m+2.
Packs from this IJCCRL Arena Series branch are listed here when they are final publication objects or clearly labelled audited provisional PGN / rating-surface packages.
Final audited package from the completed Classical Original UCI Track league stage. The event contains 180 games, 10 engines, 36 games per engine and exact 18 White / 18 Black colour balance per engine.
Audited provisional rating-surface package from the Classical Original UCI league stage. This update covers 140 completed games from the 180-game round robin and uses Elo base 3500.
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