Swiss tournaments                                                                                                                 

A web about chess engines

Edition V



460 engines

  • Swiss system tournament. New rules: The engines will be divided into groups of 80 engines + 16 best engines of the lower group. There will be five groups (A, B, C, D, E) and a last group (F), where new engines will be added. The fifteen best engines of group F will automatically promote to group E and will play a Swiss system against the 80 motors (12 rounds) that are in that group. Of those 96 engines, they will promote the first 16 to group D, and so on. All this in a single edition, so a new engine has the possibility to reach group A in that same edition. The 16 worst engines in each group will automatically demote.
  • GUI : Arena (3.51)
  • Time control: 40/4 (adapted to the CCRL benchmark).
  • Ponder: off
  • Threads : 1
  • Default hash=256Mb
  • Endgame tablebases: Syzygy - Nalimov - Scorpio Bitbases - Gaviota. Hash set to 64Mb.
  • Resign is set to -5 for 3 consecutive moves where able.
  • Updates will not be allowed during each tournament (each group).
  • Open to all Winboard and UCI engines (free, private and commercial).
  • The similarity tool will be used to determine whether or not an engine can participate (Engines allowed until 70% of moves match).
  • Results will be rated only for engines already in the CCRL lists.
  • All engines will use the same opening book limited to an 8 move depth.
  • Engine authors can either post their wish for their engine to participate or contact through email ( or private message. I will choose engines by myself too.