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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 19         :    3905      7  2143.5    3200  67.0  1169  1949   82  60.9    3780     100
   2 Reckless 0.9.0       :    3850      7  1894.5    3200  59.2   860  2069  271  64.7    3784     100
   3 Torch 4d             :    3831      7  1807.5    3200  56.5   778  2059  363  64.3    3785      98
   4 PlentyChess 8.0.0    :    3821      7  1761.0    3200  55.0   752  2018  430  63.1    3785      70
   5 pawnocchio 2.0       :    3819      7  1749.0    3200  54.7   687  2124  389  66.4    3786     100
   6 Viridithas 20.0.0    :    3798      7  1649.0    3200  51.5   598  2102  500  65.7    3787      68
   7 Integral v8          :    3795      7  1638.0    3200  51.2   570  2136  494  66.8    3787      91
   8 Stormphrax 8.0.0     :    3789      7  1607.0    3200  50.2   541  2132  527  66.6    3787      89
   9 Cinder 0.6.1         :    3783      6  1579.5    3200  49.4   524  2111  565  66.0    3788      91
  10 Alexandria 9.1       :    3776      7  1547.5    3200  48.4   534  2027  639  63.3    3788      97
  11 Hobbes 3.0           :    3767      7  1502.5    3200  47.0   431  2143  626  67.0    3789      84
  12 Caissa 2.0           :    3762      7  1479.5    3200  46.2   423  2113  664  66.0    3789      60
  13 Obsidian 16.0        :    3761      7  1473.5    3200  46.0   442  2063  695  64.5    3789      85
  14 Berserk 14           :    3756      7  1449.5    3200  45.3   415  2069  716  64.7    3789     100
  15 Raphael 4.2.0        :    3731      7  1333.5    3200  41.7   355  1957  888  61.2    3791      95
  16 Tarnished v6.0       :    3722      7  1294.0    3200  40.4   285  2018  897  63.1    3792      55
  17 Clover 9.1           :    3722      6  1291.0    3200  40.3   270  2042  888  63.8    3792     ---

  Total: 27,200 games played by 17 programs (games available on request)
  Engine participation is at my discretion. Viewers should not infer anything from those decisions.
  If an engine author does not want their engine included, let me know and I'll remove it.

  White wins: 9,439 (34.70%)
  Black wins: 195 (0.72%)
  Draws: 17,566 (64.58%)
  White score: 66.99%

  Updated: 2026-10-08