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**Gauntlet:** LC0 vs. SF/SF-NNUE
**LC0 version:** v0.26.1
**LC0 options:** Backend=cudnn-fp16, MovesLeftThreshold=0.9, MinibatchSize=88, MaxPrefetch=44, MaxCollisionEvents=44, MaxOutOfOrderEvalsFactor=2.0, SmartPruningMinimumBatches=6, NNCacheSize=2000000, MoveOverheadMs=0, ScoreType=centipawn_2019
**SF options:** Aug 8th dev version (23ecf3d) + PR2391 (BMI2 profile-build for SF/SF-NNUE), 32 threads HT (16 cores), Hash=512, Contempt=0, "Move Overhead"=0, SyzygyProbeDepth=10
**Hardware:** Ryzen 9 3950X (3.5GHz) + RTX 2080TI
**Time control:** 36s/game+0.15s/move (LC0/SF), time forfeits disabled
**Speed:** LC0: ≈11279 nodes/move (median), SF: ≈20770 Knodes/move (median), SF-NNUE: ≈14179 Knodes/move (median)
**Book:** unbalanced 3-move book
**Tablebases:** 6-man
**Adjudication:** 6-man TBs + -resign movecount=3 score=500, -draw movenumber=20 movecount=5 score=5
**Software:** Cutechess-CLI
```
   # ENGINE                           :  RATING  ERROR  CFS(%)   GAMES    W    D    L  OppN
   1 stockfish-dev_NNUE          :    81.5   19.1   100.0     500  161  284   55     1
   2 lc0.net.384x30-t60-4585    :     0.0   ----    59.4    1000  160  577  263     2
   3 stockfish-dev                     :    -2.3   18.7     ---     500  102  293  105     1
White advantage = 99.2 +/- 7.3
Draw rate (equal opponents) = 66.1 % +/- 1.7```
**Book:** balanced 3-move book
```
   # ENGINE                     :  RATING  ERROR  CFS(%)   GAMES    W    D    L  OppN
   1 stockfish-dev_NNUE         :    47.2   13.4   100.0     500   85  397   18     1
   2 stockfish-dev                   :    12.6   13.6    96.6     500   67  384   49     1
   3 lc0.net.384x30-t60-4585   :     0.0   ----     ---    1000   67  781  152     2
White advantage = 1.1 +/- 5.3
Draw rate (equal opponents) = 79.9 % +/- 1.3```
**Comment:** 7 commits have been merged in Stockfish repository since the tested version was released with a total of +19.6 Elo in selfplay (Fishtest LTC).