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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  2003.5    3000  66.8  1114  1779  107  59.3    3755     100
   2 Reckless 0.9.0       :    3855      8  1905.0    3000  63.5  1001  1808  191  60.3    3757     100
   3 Torch 4d             :    3837      7  1829.5    3000  61.0   917  1825  258  60.8    3758     100
   4 PlentyChess 7.0.0    :    3795      7  1644.5    3000  54.8   684  1921  395  64.0    3761     100
   5 Obsidian 16.0        :    3777      7  1567.0    3000  52.2   613  1908  479  63.6    3762      99
   6 Viridithas 19.0.1    :    3764      7  1508.5    3000  50.3   557  1903  540  63.4    3763      55
   7 Berserk 14           :    3764      7  1505.5    3000  50.2   541  1929  530  64.3    3763      65
   8 Alexandria 9.0       :    3762      8  1496.5    3000  49.9   545  1903  552  63.4    3763     100
   9 Tarnished v6.0       :    3734      7  1372.5    3000  45.8   413  1919  668  64.0    3765      72
  10 Caissa 1.25          :    3730      7  1358.0    3000  45.3   419  1878  703  62.6    3765      91
  11 Clover 9.1           :    3724      7  1327.5    3000  44.3   380  1895  725  63.2    3765      66
  12 Hobbes 2.1           :    3722      7  1318.5    3000  44.0   392  1853  755  61.8    3765      52
  13 Stormphrax 7.0.0     :    3721      7  1317.5    3000  43.9   383  1869  748  62.3    3765      62
  14 pawnocchio 1.9       :    3720      7  1310.5    3000  43.7   378  1865  757  62.2    3766      68
  15 Halogen 16           :    3717      7  1299.0    3000  43.3   369  1860  771  62.0    3766     100
  16 Integral V7          :    3703      7  1236.5    3000  41.2   300  1873  827  62.4    3767     ---

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

  White wins: 8,741 (36.42%)
  Black wins: 265 (1.10%)
  Draws: 14,994 (62.48%)
  White score: 67.66%
  Updated: 2026-06-15