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Home » Bullet Rating List — IJCCRL Arena Series — Original UCI Track

Bullet Rating List — IJCCRL Arena Series — Original UCI Track

IJCCRL • Bullet Rating List • Original UCI Track

Bullet Rating List — Official League 1 + League 2 Cumulative Closure + Full Knockout Closure + Final Official Result

This page is the official Bullet rating surface of the IJCCRL Arena Series for the Original UCI Track after the second completed regular-season league has been added to the previous official 54-game-per-engine table. The official cumulative publication surface remains 540 / 540 completed games, 270 / 270 mirrored units, 108 games per engine, and exact 54 White / 54 Black colour balance for every engine. Elo values remain on the IJCCRL Ordo base 3700 reference scale from the cumulative balanced round-robin evidence surface. Knockout games are bracket evidence only and do not recalculate the regular-season rating list. The Bullet Original UCI Track final is now audited and closed: Stockfish 18 defeated Obsidian dev-16.15 by 127.5–72.5 in a fixed mirrored 200-game match with 100 White / 100 Black games per engine, 100 mirrored opening units, pair ratio 0, Bullet 60+2, IJCCRL-SUITE-2026 and Syzygy TB 1–6. Stockfish 18 is the official IJCCRL Bullet Original UCI Track champion.

IJCCRL Arena Series Original UCI Track Bullet 60+2 Official PASS Elo Base 3700 540 / 540 regular-season games 108 games per engine 54W / 54B each 270 / 270 mirrored units QF-M1–QF-M4 closed SF-M1/SF-M2 closed Final Official PASS Stockfish 18 Champion Final 127.5–72.5 Final 200G / 100 mirrored units TB 1–6

Method note

  • Current state: official cumulative Bullet regular-season rating list after two completed league surfaces.
  • Reference scale: IJCCRL Ordo base 3700.
  • Cumulative official surface: 540 games, 108 games per engine, 54 White and 54 Black per engine.
  • Mirror integrity: 270 closed two-game mirrored units, pair ratio 0.
  • The Top 8 knockout bracket is derived only from the updated cumulative official order.
  • Knockout results are appended only after audit and do not recalculate this regular-season rating list.

Final publication scope

  • Track: Original UCI Track.
  • Control: Bullet 60+2.
  • Openings: IJCCRL-SUITE-2026, fixed mirrored openings.
  • Tablebases: Syzygy TB 1–6 reporting active in the final records.
  • Final scheduler closure: openingIndex 200, pending null.
  • Official champion: Stockfish 18.
  • Runner-up: Obsidian dev-16.15.

Canonical navigation

This page is part of the IJCCRL rating architecture. The hub-level context remains on the Rating Lists page; event evidence, packs and audit doctrine remain on their own support surfaces.

Rating Lists hub Events Rules & Audit

Support surfaces

This is the official regular-season publication surface plus the completed knockout record. PGN downloads and archive objects should be treated as event evidence. The final is now recorded below as an audited 200-game fixed mirrored match closure: Stockfish 18 defeated Obsidian dev-16.15 by 127.5–72.5.

Downloads Archive Winners
#EngineOfficial EloScoreScore %W-D-LW/BStatus
1
Stockfish 18
Official cumulative surface • League 1 + League 2 • 108 games		387580.5 / 10874.54%53-55-054 / 54
Pts W/B: 50.5 / 30.0		QUALIFIED
2
Obsidian dev-16.15
Official cumulative surface • League 1 + League 2 • 108 games		376364.0 / 10859.26%33-62-1354 / 54
Pts W/B: 43.5 / 20.5		QUALIFIED
3
Reckless 0.10.0-dev-6abcff05
Official cumulative surface • League 1 + League 2 • 108 games		372658.0 / 10853.70%28-60-2054 / 54
Pts W/B: 39.5 / 18.5		QUALIFIED
4
Berserk 14
Official cumulative surface • League 1 + League 2 • 108 games		371356.0 / 10851.85%24-64-2054 / 54
Pts W/B: 38.0 / 18.0		QUALIFIED
5
Clover 9.1
Official cumulative surface • League 1 + League 2 • 108 games		371055.5 / 10851.39%30-51-2754 / 54
Pts W/B: 39.5 / 16.0		QUALIFIED
6
Dragon 3.3 by Komodo Chess 64-bit
Official cumulative surface • League 1 + League 2 • 108 games		370454.5 / 10850.46%22-65-2154 / 54
Pts W/B: 36.5 / 18.0		QUALIFIED
7
PlentyChess 7.0.1
Official cumulative surface • League 1 + League 2 • 108 games		368952.0 / 10848.15%25-54-2954 / 54
Pts W/B: 37.5 / 14.5		QUALIFIED
8
Caissa 1.24 POPCNT
Official cumulative surface • League 1 + League 2 • 108 games		367750.0 / 10846.30%18-64-2654 / 54
Pts W/B: 34.0 / 16.0		QUALIFIED
9
RubiChess 20240817 (popcnt)
Official cumulative surface • League 1 + League 2 • 108 games		366147.5 / 10843.98%17-61-3054 / 54
Pts W/B: 33.5 / 14.0		ELIMINATED
10
Integral v7.0.0
Official cumulative surface • League 1 + League 2 • 108 games		348222.0 / 10820.37%1-42-6554 / 54
Pts W/B: 16.0 / 6.0		ELIMINATED

Knockout Closure — Quarterfinals, Semifinals and Final

The Top 8 knockout bracket is now fully closed. QF and SF results are preserved as bracket evidence only. The final champion is Stockfish 18 after the audited 200-game championship match.

Final closed • Stockfish 18 Champion
MatchEngine AEngine BStatus
QF-M1
#1 Stockfish 18
64.5/100
#8 Caissa 1.24 POPCNT
35.5/100
Stockfish 18 advances
QF-M2
#2 Obsidian dev-16.15
64.0/100
#7 PlentyChess 7.0.1
36.0/100
Obsidian advances
QF-M3
#3 Reckless 0.10.0-dev-6abcff05
54.0/100
#6 Dragon 3.3 by Komodo Chess 64-bit
46.0/100
Reckless advances
QF-M4
#4 Berserk 14
56.0/100
#5 Clover 9.1
44.0/100
Berserk 14 advances
SF-M1
Stockfish 18
63.5/100
Berserk 14
36.5/100
Stockfish 18 finalist
SF-M2
Obsidian dev-16.15
56.5/100
Reckless 0.10.0-dev-6abcff05
43.5/100
Obsidian finalist
FINAL
Stockfish 18
127.5/200
Obsidian dev-16.15
72.5/200
Stockfish 18 champion
IJCCRL • Original UCI Bullet • Final Official Audit

Final Official Result — Stockfish 18 Champion

The final is closed after audit as an official IJCCRL Bullet Original UCI Track championship result. The official regular-season Elo table remains the first publication authority on this page and is not recalculated from knockout games. This section records only the audited 200-game final result.

Final Official PASS Stockfish 18 champion 200 / 200 games 100 / 100 mirrored units 100W / 100B each Pair ratio 0 Scheduler pending null TB 1–6

Official Final closure statement

Stockfish 18 defeated Obsidian dev-16.15 by 127.5–72.5 in a fixed mirrored 200-game Bullet 60+2 championship match. The match is accepted as the official final because it closes exactly at 200 games, 100 mirrored opening units, 100 White and 100 Black games for each engine, pair ratio 0 and no pending scheduler state. No proxy_fatal, illegal_move, no_bestmove, crash or forfeit incident was detected.

Final score127.5–72.5
ChampionStockfish 18
PGN games200
JSON games200
Scheduler cursorOI 200
Scheduler pendingnull
Colour balance100W / 100B each
Mirrored units100 / 100
Stockfish W-D-L77-101-22
Obsidian W-D-L22-101-77
Total TB hits104,604,858
Critical incidents0
EngineScoreGames+ = –W / BWhite scoreBlack score
Stockfish 18
Seed authority: #1 • Official Elo 3875 • 80.5/108
127.520077 = 101 – 22100 / 10088.0/10039.5/100
Obsidian dev-16.15
Seed authority: #2 • Official Elo 3763 • 64.0/108
72.520022 = 101 – 77100 / 10060.5/10012.0/100

Final audit controls

  • PGN games: 200.
  • JSON games: 200.
  • Scheduler closure: openingIndex 200, pending null.
  • Colour balance: 100 White and 100 Black games for each engine.
  • Mirrored units: 100/100 closed.
  • Pair ratio: 0.
  • PGN/JSON/scheduler parity: no discrepancy detected.
  • Critical incidents: 0 proxy_fatal, 0 illegal_move, 0 no_bestmove, 0 crash/forfeit.

Final technical profile

  • Result profile: 98 White wins, 1 Black win and 101 draws.
  • Terminations: 99 checkmates, 58 threefold repetitions, 22 insufficient-material draws, 15 fifty-move-rule draws and 6 stalemates.
  • Mirrored-unit profile: Stockfish 18 won 56 units, Obsidian won 2 units and 42 units were drawn or split.
  • TB reporting: both engines reported TB data in 200/200 games.
  • Games with zero TB hits: 1 short threefold-repetition draw, not an operational incident.
  • TBHitsTotal aggregate: 104,604,858.
Final doctrine: the 200-game championship result is appended as bracket evidence only. It does not change the official cumulative 540-game regular-season Elo table. Stockfish 18 is the official Bullet Original UCI Track champion; Obsidian dev-16.15 is the official runner-up.
IJCCRL • Original UCI Bullet • Official Cumulative Audit

League 1 + League 2 Official Closure — 540 / 540 Games

The cumulative table above is based on 108 games per engine and exact 54 White / 54 Black colour balance for every engine. The knockout and final records are not included in the regular-season Elo recalculation.

Official audit PASS 540 / 540 games 270 / 270 mirrored units Pair ratio 0 preserved 108 games per engine 54W / 54B each Top 8 closed Final champion recorded
Regular-season games540 / 540
League 1 games270
League 2 games270
Games per engine108
Colour balance54W / 54B each
Mirrored units270 / 270
Official base3700
ChampionStockfish 18

Integrity checks

  • The cumulative pair ratio remains 0 because both league surfaces are mirrored and colour-balanced.
  • Each of the 45 engine pairings has 12 regular-season games across the cumulative surface.
  • Knockout matches are explicitly outside the rating recalculation scope.
  • The final match separately closes at 200/200 games with 100/100 mirrored units.

Publication state

  • Official cumulative leader: Stockfish 18.
  • Official knockout champion: Stockfish 18.
  • Official runner-up: Obsidian dev-16.15.
  • Final tiebreak: not required.
Publication doctrine: this is the official updated IJCCRL Bullet rating surface for the Original UCI Track. Ratings use the IJCCRL base 3700 scale and the cumulative two-league 540-game regular-season surface. QF-M1, QF-M2, QF-M3 and QF-M4 are closed as official audited knockout results. Both semifinals are closed. The final is closed: Stockfish 18 defeated Obsidian dev-16.15 by 127.5–72.5 in a fixed mirrored 200-game match, 100 mirrored opening units, 100W/100B per engine, pair ratio 0, Bullet 60+2, IJCCRL-SUITE-2026 and Syzygy TB 1–6. Stockfish 18 is the official champion.
Structural state: Bullet Original UCI Track regular-season rating list updated after the second completed league. Official cumulative clean surface: 540/540 games, 270/270 mirrored units, Elo base 3700, 108 games per engine. Official cumulative leader: Stockfish 18. Official final result: Stockfish 18 127.5–72.5 Obsidian dev-16.15. Final contract: 200 games total, 100 mirrored opening units, 100W/100B per engine and pair ratio 0. Eliminated after the cumulative regular-season update: RubiChess 20240817 (popcnt) and Integral v7.0.0.
Build note: build 2026-06-03ORIG-BULLET-FINAL-OFFICIAL-PASS-STOCKFISH18-CHAMPION • scope: preserve official cumulative 540-game regular-season Elo table as the first classification block; preserve QF-M1, QF-M2, QF-M3 and QF-M4 knockout results; preserve SF-M1 and SF-M2 semifinal results; replace final live state with official final closure; add Stockfish 18 127.5–72.5 Obsidian dev-16.15 result, champion status, audit controls, technical profile and final doctrine; preserve 200-game final contract with 100 mirrored opening units, 100W/100B per engine, pair ratio 0 and scheduler pending null; no regular-season Elo recalculation from knockout evidence • total HTML lines: 609.