Bullet 120+2 — Derived

Current Official Event (Season 1)
This page will host the current event pack + standings + audit once the tournament finishes.
⏳ Scheduled • starts 2026-03-01
IJCCRL-BUL1202-DERIVED-OFFICIAL-S1-001-20260301
Track: BUL1202-DERIVED
TC: 120s+2s
Type: OFFICIAL
Season: S1
Event #: 001
Start date: 20260301
Quick links: Winners • Rules & Audit • Rating Lists (Hub)
Season I · Fase Regular · Resultados Oficiales (Derived Stockfish)
Auditoría PASS: se publican standings completos tras 240 partidas verificadas (Top-16 RR · 30 partidas/motor · 120+2). Elo IJCCRL (base 3700) calculado desde esta fase regular.
✔️ Finalizado • 01-Mar-2026
IJCCRL-BUL1202-DERIVED-OFFICIAL-S1-001-20260301
TC: 120+2
Evento: Bullet Top-16 RR (15 rounds)
Season: I
Motores: 16
Partidas: 240
Elo base: 3700
Método Elo: Logistic (Ordo-style fit)
# Motor Elo Puntos Victorias Empates Derrotas
1Artemis 26.1TR_PrO376718.01488
2Deepalienist-3.60-010326-sse41popcnt374517.01389
3SpecTral 12373316.51299
4DarkSeid v10.3 SE373416.511118
5Stockfishjrc-1.40-190226-sse41popcnt371215.512711
6HypnoS 120126371115.512711
7Dark SisTer 11371115.512711
8RapTora 6371115.511910
9Revolution-4.90-210226370015.012612
10Stockfish 18370015.012612
11CorChess 5 dev-20260227-3d8f4977370015.011811
12Wordfish-4.20-230226-sse41popcnt368914.511712
13Brainlearn 31369014.510911
14BrainlearnJRC-1.60-010326-sse41popcnt367914.010812
15Killfish PB 260126364512.58913
16DON dev-20260223-8cfc79bb35749.56717
Nota Elo: “Logistic (Ordo-style fit)” = ajuste iterativo del modelo Elo clásico (expectativa logística) usando las 240 partidas (victoria=1, tablas=0.5, derrota=0), centrando la media del evento en 3700. Escala interna IJCCRL (sin barras de error en esta versión).
Recursos rápidos: Standings • Rules & Audit • Chess Engines Rating List
IJCCRL Audit Report — Match 1 (M1)
Audit scope: PGN completeness • deterministic pairing integrity • duplicate detection (D1/D2) • colour balance • termination & tablebase evidence.
✅ AUDIT PASS • 2026-03-03
Match
M1 — Artemis 26.1TR_PrO vs RapTora
Result
Winner: Artemis • Score: 59.5 – 40.5
Games
100 total • 50 openings × 2 mirrored legs
Event tag (internal)
IJCCRL Derived Arena S1 — Playoffs (Top-8) — M1
Track: BUL1202-DERIVED
TC: 120s+2s
TB: Syzygy 1–6
Type: Playoffs
Dataset: games.pgn + results.json + scheduler_state.json

What “Audit PASS” means

  • Complete PGN with final results for all games (no unfinished games published).
  • Deterministic pairing integrity (cycle/pairIndex/pairGameNo uniqueness; leg mirror swap verified).
  • No duplicate games detected (D1/D2 fingerprints).
  • Colour balance per engine verified for round-robin / mirrored events.
  • Termination & tablebase evidence recorded in PGN tags.

1) PGN completeness PASS

All 100 games are present in the published PGN and every game has a final, valid result (1-0 / 0-1 / 1/2-1/2). No unfinished games (*) were found.

2) Deterministic pairing integrity PASS

The PGN contains deterministic IJCCRL tags for every game: IJCCRL_Cycle, IJCCRL_PairIndex, IJCCRL_PairGameNo, IJCCRL_OpeningIndex, IJCCRL_OpeningBlock.

  • OpeningIndex coverage: unique and continuous 1..100 (no gaps, no repeats).
  • Mirrored legs: each opening block appears exactly twice with PairGameNo=1 and PairGameNo=2.
  • Colour swap verified: the two games of each opening pair are strict mirror legs (White/Black are swapped).
  • Scheduler consistency: final state reached openingIndex=100 and a completed paired leg (pairGameNo=2).

3) Duplicate detection (D1/D2) PASS

Duplicate scans found 0 collisions under both fingerprints:

  • D1: normalised movetext fingerprint — 0 duplicates.
  • D2: movetext + (White/Black + Result) fingerprint — 0 duplicates.

4) Colour balance PASS

Match format uses mirrored openings; therefore colour balance must be exact.

  • Artemis: 50 as White • 50 as Black.
  • RapTora: 50 as White • 50 as Black.

5) Termination & TB evidence PASS

Termination is recorded for every game via the Termination tag.

Termination Count
checkmate73
threefold repetition11
insufficient material8
50-move rule6
black flag (time)2

Tablebase evidence is present in audit-grade tags for every game: IJCCRL_TBHitsWhite, IJCCRL_TBHitsBlack, IJCCRL_TBHitsTotal, IJCCRL_TBReportedWhite, IJCCRL_TBReportedBlack.

  • Reported flags: TB reported by both sides (…ReportedWhite=1 and …ReportedBlack=1) across the dataset.
  • Arithmetic consistency: TBHitsTotal = TBHitsWhite + TBHitsBlack verified across all games.

Audit verdict PASS

This match satisfies all IJCCRL audit rules: published PGN is complete and final, deterministic pairing and mirrored legs are verified, no duplicates exist under D1/D2, colour balance is exact, and termination + TB evidence is present and consistent.

Latest audited event reference: IJCCRL Derived Arena S1 — Playoffs (Top-8) — M1 ✅PASS

Quick links: Rules & Audit • Winners • Tournament Downloads • Rating Lists (Hub)
IJCCRL Audit Report — Match 2 (M2)
Audit scope: PGN completeness • deterministic pairing integrity • duplicate detection (D1/D2) • colour balance • termination & tablebase evidence.
✅ AUDIT PASS • 2026-03-05
Match
M2 — Deepalienist 3.60 vs Dark SisTer 11
Result
Winner: Dark SisTer • Score: 50.5 – 49.5
Games
100 total • 50 openings × 2 mirrored legs
Event tag (internal)
IJCCRL Derived Arena S1 — Playoffs (Top-8) — M2
Track: BUL1202-DERIVED
TC: 120s+2s
TB: Syzygy 1–6
Type: Playoffs
Dataset: games.pgn + results.json + scheduler_state.json

What “Audit PASS” means

  • Complete PGN with final results for all games (no unfinished games published).
  • Deterministic pairing integrity (cycle/pairIndex/pairGameNo uniqueness; leg mirror swap verified).
  • No duplicate games detected (D1/D2 fingerprints).
  • Colour balance per engine verified for round-robin / mirrored events.
  • Termination & tablebase evidence recorded in PGN tags.

1) PGN completeness PASS

All 100 games are present in the published PGN and every game has a final, valid result (1-0 / 0-1 / 1/2-1/2). No unfinished games (*) were found.

2) Deterministic pairing integrity PASS

The PGN contains deterministic IJCCRL tags for every game: IJCCRL_Cycle, IJCCRL_PairIndex, IJCCRL_PairGameNo, IJCCRL_OpeningIndex, IJCCRL_OpeningBlock.

  • OpeningIndex coverage: unique and continuous 1..100 (no gaps, no repeats).
  • Mirrored legs: each opening block appears exactly twice with PairGameNo=1 and PairGameNo=2.
  • Colour swap verified: the two games of each opening pair are strict mirror legs (White/Black are swapped).
  • Scheduler consistency: final state reached openingIndex=100 and a completed paired leg (pairGameNo=2).

3) Duplicate detection (D1/D2) PASS

Duplicate scans found 0 collisions under both fingerprints:

  • D1: normalised movetext fingerprint — 0 duplicates.
  • D2: movetext + (White/Black + Result) fingerprint — 0 duplicates.

4) Colour balance PASS

Match format uses mirrored openings; therefore colour balance must be exact.

  • Deepalienist: 50 as White • 50 as Black.
  • Dark SisTer: 50 as White • 50 as Black.

5) Termination & TB evidence PASS

Termination is recorded for every game via the Termination tag.

Termination Count
checkmate82
threefold repetition8
insufficient material6
stalemate2
50-move rule1
flag (time)1

Tablebase evidence is present in audit-grade tags for every game: IJCCRL_TBHitsWhite, IJCCRL_TBHitsBlack, IJCCRL_TBHitsTotal, IJCCRL_TBReportedWhite, IJCCRL_TBReportedBlack.

  • Reported flags: TB reported by both sides (…ReportedWhite=1 and …ReportedBlack=1) across the dataset.
  • Arithmetic consistency: TBHitsTotal = TBHitsWhite + TBHitsBlack verified across all games.

Audit verdict PASS

This match satisfies all IJCCRL audit rules: published PGN is complete and final, deterministic pairing and mirrored legs are verified, no duplicates exist under D1/D2, colour balance is exact, and termination + TB evidence is present and consistent.

Latest audited event reference: IJCCRL Derived Arena S1 — Playoffs (Top-8) — M2 ✅PASS

Quick links: Rules & Audit • Winners • Tournament Downloads • Rating Lists (Hub)
IJCCRL Audit Report — Match 3 (M3)
Audit scope: PGN completeness • deterministic pairing integrity • duplicate detection (D1/D2) • colour balance • termination & tablebase evidence.
✅ AUDIT PASS • 2026-03-05
Match
M3 — SpecTral 12 vs HypnoS 120126
Result
Winner: SpecTral • Score: 54.0 – 46.0
Games
100 total • 50 openings × 2 mirrored legs
Event tag (internal)
IJCCRL Derived Arena S1 — Playoffs (Top-8) — M3
Track: BUL1202-DERIVED
TC: 120s+2s
TB: Syzygy 1–6
Type: Playoffs
Dataset: games.pgn + results.json + scheduler_state.json

What “Audit PASS” means

  • Complete PGN with final results for all games (no unfinished games published).
  • Deterministic pairing integrity (cycle/pairIndex/pairGameNo uniqueness; leg mirror swap verified).
  • No duplicate games detected (D1/D2 fingerprints).
  • Colour balance per engine verified for round-robin / mirrored events.
  • Termination & tablebase evidence recorded in PGN tags.

1) PGN completeness PASS

All 100 games are present in the published PGN and every game has a final, valid result (1-0 / 0-1 / 1/2-1/2). No unfinished games (*) were found.

2) Deterministic pairing integrity PASS

The PGN contains deterministic IJCCRL tags for every game: IJCCRL_Cycle, IJCCRL_PairIndex, IJCCRL_PairGameNo, IJCCRL_OpeningIndex, IJCCRL_OpeningBlock.

  • OpeningIndex coverage: unique and continuous 1..100 (no gaps, no repeats).
  • Mirrored legs: each opening block appears exactly twice with PairGameNo=1 and PairGameNo=2.
  • Colour swap verified: the two games of each opening pair are strict mirror legs (White/Black are swapped).
  • Scheduler consistency: final state reached openingIndex=100 and a completed paired leg (pairGameNo=2).

3) Duplicate detection (D1/D2) PASS

Duplicate scans found 0 collisions under both fingerprints:

  • D1: normalised movetext fingerprint — 0 duplicates.
  • D2: movetext + (White/Black + Result) fingerprint — 0 duplicates.

4) Colour balance PASS

Match format uses mirrored openings; therefore colour balance must be exact.

  • SpecTral: 50 as White • 50 as Black.
  • HypnoS: 50 as White • 50 as Black.

5) Termination & TB evidence PASS

Termination is recorded for every game via the Termination tag.

Termination Count
checkmate75
threefold repetition15
insufficient material5
50-move rule3
flag (time)1
stalemate1

Tablebase evidence is present in audit-grade tags for every game: IJCCRL_TBHitsWhite, IJCCRL_TBHitsBlack, IJCCRL_TBHitsTotal, IJCCRL_TBReportedWhite, IJCCRL_TBReportedBlack.

  • Reported flags: TB reported by both sides (…ReportedWhite=1 and …ReportedBlack=1) across the dataset.
  • Arithmetic consistency: TBHitsTotal = TBHitsWhite + TBHitsBlack verified across all games.

Audit verdict PASS

This match satisfies all IJCCRL audit rules: published PGN is complete and final, deterministic pairing and mirrored legs are verified, no duplicates exist under D1/D2, colour balance is exact, and termination + TB evidence is present and consistent.

Latest audited event reference: IJCCRL Derived Arena S1 — Playoffs (Top-8) — M3 ✅PASS

Quick links: Rules & Audit • Winners • Tournament Downloads • Rating Lists (Hub)
IJCCRL Playoffs — Final Complete + Audit PASS + Champion Confirmed
The BUL1202-DERIVED final between Stockfishjrc-1.40-190226-sse41popcnt and SpecTral 12 has finished. The published PGN pack passed audit under the mirrored-opening rules, and the tournament winner is now confirmed.
✅ FINAL AUDITED
Track: BUL1202-DERIVED
TC: 120s+2s
TB: Syzygy 1–6
Final format: mirrored opening pairs
Author: Jorge Ruiz, Spain

Completed quarter-finals (audited)

Match Pairing Winner Score Status
M1 Artemis 26.1TR_PrO vs RapTora ✅ Artemis 59.5 – 40.5 AUDIT PASS
M2 Deepalienist 3.60 vs Dark SisTer 11 ✅ Dark SisTer 50.5 – 49.5 AUDIT PASS
M3 SpecTral 12 vs HypnoS 120126 ✅ SpecTral 54.0 – 46.0 AUDIT PASS
M4 DarkSeid v10.3 SE vs Stockfishjrc-1.40-190226 ✅ StockfishJRC 52.5 – 47.5 AUDIT PASS

“Audit PASS” means: complete PGN with final results for all games, deterministic pairing integrity by mirrored opening swap, no duplicate games detected (D1/D2), exact colour balance where applicable, and termination plus tablebase evidence recorded in PGN tags.

Semi-finals — completed

Match Pairing Winner Score Status
SF1 Artemis vs Stockfishjrc-1.40-190226 ✅ StockfishJRC 52.0 – 48.0 AUDIT PASS
SF2 SpecTral 12 vs Dark SisTer 11 ✅ SpecTral 12 50.0 – 50.0 + AG 26.0 – 24.0 AUDIT PASS

SF2 required an armageddon after the main semi-final ended level at 50.0 – 50.0. The armageddon was won by SpecTral 12 over Dark SisTer 11 by 26.0 – 24.0, and the published pack passed audit.

Final — audited result

Stage Pairing Winner Score Status
Final Stockfishjrc-1.40-190226-sse41popcnt vs SpecTral 12 🏆 StockfishJRC 101.5 – 98.5 AUDIT PASS

The final closed with 200/200 games published and audited. Stockfishjrc-1.40-190226-sse41popcnt won the title by 101.5 – 98.5 over SpecTral 12.

Audit notes — final

  • Complete PGN published with 200 finished games and no unfinished results.
  • Mirrored-opening integrity verified: 100 valid opening pairs, with each opening played twice and colours swapped.
  • No duplicate games detected under D1/D2 fingerprints.
  • Exact colour balance confirmed for the match: 100 white / 100 black per engine.
  • Termination and tablebase evidence were recorded in PGN tags throughout the final pack.

Champion

🏆 I Season Final Winner

Stockfishjrc-1.40-190226-sse41popcnt
Author: Jorge Ruiz, Spain

Downloads

Audited packs (PGN + artifacts) are published here: https://jccrl.eu/downloads/

Quick links: Rules & Audit • Winners • Tournament Downloads • Rating Lists (Hub)