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Tournament Info
Top15 round-robin tournament of free engines only, using Stefan Pohl's unbalanced 3-move book Chess324xxl_big+090_+119.pgn played reversed sides per pairing.

Time Control: game in 2 minutes plus 1 second increment, 2'+1"
Hardware: Intel i7 12700
CuteChess GUI: Concurrency 8 (# of P-cores)
Each engine 512MB hash, 1 thread, ponder off
Each pairing 100 openings
Adjudication: Syzygy 5-men only - no eval based adjudication.
Endgame tablebases: Syzygy 5-men.
Ratings calculated with Ordo.

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   # PLAYER               :  RATING  ERROR  POINTS  PLAYED   (%)     W     D    L  D(%)  OppAvg  CFS(%)
   1 Stockfish 18         :    3879      8  1952.0    3000  65.1  1026  1852  122  61.7    3768     100
   2 Reckless 0.9.0       :    3848      7  1823.5    3000  60.8   879  1889  232  63.0    3770     100
   3 Torch 4d             :    3832      7  1754.0    3000  58.5   810  1888  302  62.9    3771      99
   4 pawnocchio 2.0       :    3821      7  1702.0    3000  56.7   726  1952  322  65.1    3772      53
   5 PlentyChess 8.0.0    :    3820      7  1700.5    3000  56.7   769  1863  368  62.1    3772     100
   6 Viridithas 20.0.0    :    3799      7  1606.0    3000  53.5   615  1982  403  66.1    3774     100
   7 Stormphrax 8.0.0     :    3785      7  1546.0    3000  51.5   549  1994  457  66.5    3775     100
   8 Obsidian 16.0        :    3765      7  1456.5    3000  48.5   494  1925  581  64.2    3776      94
   9 Alexandria 9.0       :    3757      7  1421.0    3000  47.4   460  1922  618  64.1    3776      87
  10 Berserk 14           :    3752      7  1396.0    3000  46.5   423  1946  631  64.9    3777      97
  11 Cinder 0.5.0         :    3742      7  1352.5    3000  45.1   407  1891  702  63.0    3777      99
  12 Raphael 4.2.0        :    3730      7  1300.5    3000  43.4   379  1843  778  61.4    3778      93
  13 Caissa 1.25          :    3723      7  1266.5    3000  42.2   314  1905  781  63.5    3779      71
  14 Tarnished v6.0       :    3720      7  1253.5    3000  41.8   317  1873  810  62.4    3779      58
  15 Clover 9.1           :    3719      7  1249.0    3000  41.6   304  1890  806  63.0    3779      89
  16 Hobbes 2.1           :    3712      7  1220.5    3000  40.7   313  1815  872  60.5    3779     ---

  Total: 24,000 games played by 16 programs (games available on request)

  White wins: 8,580 (35.75%)
  Black wins: 205 (0.85%)
  Draws: 15,215 (63.40%)
  White score: 67.45%
  Updated: 2026-07-09