Blitz Rating List (Original UCI)

IJCCRL • Bullet 60s+2s • 2026

II SE BULLET IJCCRL CUP 240326 — Regular Phase

Audited 10-engine fixed mirrored opening round robin regular phase. The event passed audit under IJCCRL material criteria: complete published results, deterministic pairing integrity verified under the mirrored round-robin format actually used, no duplicate games detected, exact colour balance for every engine, and termination plus tablebase evidence recorded in the published event material.

AUDIT PASS Time control: 60s + 2s 360 games 10 engines 72 games per engine

Audit summary

Format10-engine RR
Pair structure8 games per pair
Colour balance36W / 36B each
Publication packPGN + results + scheduler

Verified controls

  • PASSComplete published event pack with final results for the full 360-game regular phase.
  • PASSDeterministic pairing integrity verified under the fixed mirrored opening round-robin format actually used.
  • PASSNo duplicate games detected under D1/D2 fingerprint control.
  • PASSExact round-robin colour balance verified for every engine: 36 White and 36 Black games each.
  • PASSTermination and tablebase evidence recorded in the published event material.
Rank Engine Score Games W-D-L Last 10 Notes
1 Obsidian dev-16.15 45.5/72 72 31-29-12 LWDWWDDLWD Regular-phase leader by half a point.
2 Stockfish 18 45.0/72 72 33-24-15 WDWLDWDWDW Second place, half a point behind the leader.
3 Stormphrax 7.0.0 sse41popcnt 42.5/72 72 23-39-10 WLLWDWDWLD Highest draw volume among the top three.
4 Caissa 1.24 POPCNT 38.0/72 72 23-30-19 LWDWDDDWLD Tied on points for fourth place.
5 Clover 9.1 38.0/72 72 25-26-21 LDLWLDLWWD Level on points with Caissa.
6 Reckless 0.9.0 36.0/72 72 23-26-23 WLWLDLWLDW Even win/loss balance around the middle of the table.
7 Berserk 13 34.5/72 72 19-31-22 WDDLWLWLWD Solid draw count across the audited field.
8 PlentyChess 7.0.1 33.0/72 72 16-34-22 LDWDDDDLDL High-draw profile in the full mirrored schedule.
9 RubiChess 20240817 (popcnt) 24.0/72 72 11-26-35 WLDLDLLWLD Complete audited sample with exact colour balance.
10 Integral v7.0.0 23.5/72 72 9-29-34 LWLDLWDLDL Regular phase completed under the same mirrored RR conditions.
Download the published event pack and games from the official IJCCRL downloads section: jccrl.eu/downloads/.

This block is ready to publish as the regular-phase audit summary + final standings for II SE BULLET IJCCRL CUP 240326. The audited round robin closed at 360/360 games, with 36 White and 36 Black games per engine and the final table led by Obsidian dev-16.15 on 45.5/72.
IJCCRL • II SE Bullet • 60s+2s • 2026

II SE Bullet IJCCRL Cup 240326 — Top 8 Qualified Engines

The first eight engines from the audited regular phase advance to the knockout stage. Pairings are seeded in standard order: #1 vs #8, #2 vs #7, #3 vs #6 and #4 vs #5. For clarity and consistency, these matches will be executed in AVX2.

Top 8 Qualified Regular phase audited 72 games per engine Bullet 60s + 2s Knockout: AVX2

Pairing 1

#1
Obsidian dev-16.15
45.5 / 72 points
31-29-12
vs
#8
PlentyChess 7.0.1
33.0 / 72 points
16-34-22

Pairing 2

#2
Stockfish 18
45.0 / 72 points
33-24-15
vs
#7
Berserk 13
34.5 / 72 points
19-31-22

Pairing 3

#3
Stormphrax 7.0.0 sse41popcnt
42.5 / 72 points
23-39-10
vs
#6
Reckless 0.9.0
36.0 / 72 points
23-26-23

Pairing 4

#4
Caissa 1.24 POPCNT
38.0 / 72 points
23-30-19
vs
#5
Clover 9.1
38.0 / 72 points
25-26-21
#1 Qualified

Obsidian dev-16.15

45.5 / 72 points in the regular phase

Record31-29-12
Games72
Seed1
#2 Qualified

Stockfish 18

45.0 / 72 points in the regular phase

Record33-24-15
Games72
Seed2
#3 Qualified

Stormphrax 7.0.0 sse41popcnt

42.5 / 72 points in the regular phase

Record23-39-10
Games72
Seed3
#4 Qualified

Caissa 1.24 POPCNT

38.0 / 72 points in the regular phase

Record23-30-19
Games72
Seed4
#5 Qualified

Clover 9.1

38.0 / 72 points in the regular phase

Record25-26-21
Games72
Seed5
#6 Qualified

Reckless 0.9.0

36.0 / 72 points in the regular phase

Record23-26-23
Games72
Seed6
#7 Qualified

Berserk 13

34.5 / 72 points in the regular phase

Record19-31-22
Games72
Seed7
#8 Qualified

PlentyChess 7.0.1

33.0 / 72 points in the regular phase

Record16-34-22
Games72
Seed8
Qualified from the final audited regular-phase standings of II SE Bullet IJCCRL Cup 240326. The Top 8 order is: Obsidian dev-16.15, Stockfish 18, Stormphrax 7.0.0 sse41popcnt, Caissa 1.24 POPCNT, Clover 9.1, Reckless 0.9.0, Berserk 13 and PlentyChess 7.0.1.

Knockout pairings are fixed as #1 vs #8, #2 vs #7, #3 vs #6 and #4 vs #5. The elimination stage will be run in AVX2 configuration for all participants.