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CCCC

The Chess.com Computer Chess Championship (CCCC) is continuously running computer chess events and is maintained by Chess.com at https://www.chess.com/computer-chess-championship.

CCC Rapid 2021: Finals

Executable Network Placement Result
v0.27.0-rc1 J94-100 2/2 219.5/500

Finals Ordo evaluation:

   # ENGINE       :  RATING  ERROR  CFS(%)    W    D    L   GAMES  DRAWS(%)
   1 Stockfish    :    49.3   17.3   100.0  122  317   61     500      63.4
   2 Lc0          :     0.0   ----     ---   61  317  122     500      63.4

White advantage = 132.2 +/- 8.9
Draw rate (equal opponents) = 88.6 % +/- 3.7

LC0 hardware and settings:

  • Hardware: 2x A100, 2x AMD EPYC 7H12, 256 cores (128 physical)
  • Non-default parameters:
    • MoveOverheadMs=1000
    • StrictTiming=true
    • Backend=demux
    • BackendOptions=backend=cuda-fp16,res_block_fusing=true,(gpu=0),(gpu=1)
    • NNCacheSize=20000000
    • MinibatchSize=192
    • MaxPrefetch=48
    • MultiGather=true
    • MaxCollisionEvents=917
    • MaxCollisionVisits=1000
    • MaxOutOfOrderEvalsFactor=2.4
    • SmartPruningMinimumBatches=100
    • TimeManager=legacy(steepness=4.0)
Last Updated: 2021-03-17