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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         :    3904      7  2153.5    3200  67.3  1191  1925   84  60.2    3776     100
   2 Reckless 0.9.0       :    3846      7  1896.5    3200  59.3   867  2059  274  64.3    3780     100
   3 Torch 4d             :    3831      7  1825.5    3200  57.0   806  2039  355  63.7    3781      98
   4 PlentyChess 8.0.0    :    3821      7  1776.5    3200  55.5   765  2023  412  63.2    3781      64
   5 pawnocchio 2.0       :    3819      7  1768.5    3200  55.3   712  2113  375  66.0    3781     100
   6 Viridithas 20.0.0    :    3799      6  1672.5    3200  52.3   607  2131  462  66.6    3783      79
   7 Integral v8          :    3795      7  1654.0    3200  51.7   592  2124  484  66.4    3783      97
   8 Stormphrax 8.0.0     :    3786      7  1611.0    3200  50.3   545  2132  523  66.6    3783      63
   9 Cinder 0.6.1         :    3784      7  1603.0    3200  50.1   551  2104  545  65.8    3784     100
  10 Hobbes 3.0           :    3767      6  1524.5    3200  47.6   454  2141  605  66.9    3785      88
  11 Obsidian 16.0        :    3762      7  1497.5    3200  46.8   473  2049  678  64.0    3785      94
  12 Alexandria 9.0       :    3754      7  1460.0    3200  45.6   446  2028  726  63.4    3785      53
  13 Berserk 14           :    3753      7  1458.0    3200  45.6   417  2082  701  65.1    3785     100
  14 Raphael 4.2.0        :    3731      7  1354.0    3200  42.3   374  1960  866  61.3    3787      82
  15 Caissa 1.26          :    3727      7  1333.0    3200  41.7   315  2036  849  63.6    3787      85
  16 Clover 9.1           :    3722      6  1310.0    3200  40.9   292  2036  872  63.6    3787      64
  17 Tarnished v6.0       :    3720      7  1302.0    3200  40.7   291  2022  887  63.2    3788     ---

  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: 9,498 (34.92%)
  Black wins: 200 (0.73%)
  Draws: 17,502 (64.35%)
  White score: 67.06%

  Updated: 2026-09-16