Breaking News (02.02.2025):     Series of exciting CS are ON, as players as far as possible 3650+ played!     And I've good news: it seems all stable... no any game to be lost on time!     On other hand, separate tours organized..e.g up to 31 MB (uncompressed),     Which includes Top engines min. 3650+ Elo... and the other tour includes     Stronger players, sure via bigger NN Evalfiles with over than 3800+ Elo, in     Same time that means we've 2 Champs, the Winner of 3650+ (Small size):     Obsidian 15, where the Winner of 3800+: SF-PRO2 290125 and how nice      That both engines are as 1st time Winners in SCCT tours! Btw, CorChess     Proved again to all that belongs to the strongest ones but unfortunately lost     In long-run tie-break of 1276 games where SF-PRO2 is managed to win...!     Meanwhile,for more detailed info about latest new competition OpenChess
     NN Small Size Champ: Obsidian - Congratulations to Gabriele Lombardo!
Rank Name                Elo    +    - games score oppo. draws   1 Obsidian 15        3782    8    8  1058   62%  3711   72%    2 Berserk 271124     3768    8    8  1058   59%  3712   75%    3 Neon Tetra 2.1     3762    8    8  1058   58%  3712   74%    4 PlentyChess 4.01   3752    8    8  1058   56%  3712   77%    5 K.Dragon 3.2       3749    8    8  1058   56%  3712   76%    6 Alexandria 7.1.0   3740    8    8  1058   54%  3713   78%    7 Caissa 1.21        3740    8    8  1058   54%  3713   78%    8 Redfish 240122     3736    8    8  1058   53%  3713   78%    9 Integral 6.0       3726    8    8  1058   52%  3713   80%   10 Horsie 1.0         3720    9    9  1058   51%  3714   79%   11 Viridithas 16      3709    9    8  1058   49%  3714   77%   12 Rubichess 0824     3708    9    9  1058   49%  3714   77%   13 Starzix 6.0        3707    9    9  1058   49%  3714   74%   14 Clover 8.1         3704    9    8  1058   48%  3714   79%   15 Stockfish 170521   3701    9    8  1058   48%  3715   78%   16 Motor 0.8          3697    9    8  1058   47%  3715   77%   17 CFishGN 140123     3695    9    8  1058   47%  3715   76%   18 Lizard 11.1        3693    8    8  1058   47%  3715   79%   19 Bluefish 13        3690    9    8  1058   46%  3715   75%   20 Stormphrax 6.0     3687    8    8  1058   46%  3715   76%   21 CF-EXT 161120      3683    8    8  1058   45%  3715   74%   22 Uralochka 3.42 d7  3675    8    8  1058   43%  3716   73%   23 Titan 1.1          3661    8    8  1058   41%  3716   72%   24 Koivisto 9.2       3650    8    8  1058   39%  3717   68% 
      • Calculated by Bayeselo / Koivisto fixed to 3650 Elo / Blue Name = Last Update
More Details:• Similarity Rule is not used due to mostly are close each other NN L /  IV• For better and stable performance: HT (SMT) + Large Pages: Disabled• GUI option: Played via Concurrent games: 72, means 56% CPU usage  • Almost all the engines are AVX2.. and tested via theirs default Evalfiles  Exc. just out of curiosity, CfishGN is played via nn-a27a526755f0.nnue• Sure where possible, any Engine's move overhead is increased to: 100• All engines are played with newer Unique ver (based on 700+ openings)  For more fair conditions, each of used opening line is repeated as twice• Plus for fair..Engine Learning is disabled (Exp etc. files are not allowed)• The overall Draw percentage (based on 12690 games) not so high: 76%• As usually, all of the tour games are available (in PGN): Small Size CS------------------------------------------------------------------------------------------------------  UPDATE 2
  Well, finely here are all the standings of latest organized tournaments,  And to be honest, really it takes a lot of time for all these news but no   Any regret and I feel BIG fun..and I assume you too?!) Note: as 3800+  Players are picked the highest rated Top chess engines of recent: LVI  Exception. SF-PRO2 290125 engine is a newer, an updated version...
  The Champion of 3800+: SF-PRO2 290125  - Congrats to Apocalypse!
  Bullet (1m+0.5s) tournament: Corchess 190125 is performed as best!
Rank Name              Elo    +    - games score oppo. draws    1 Corchess 190125  3820    4    4   700   51%  3816   97%    2 Killfish 021224  3818    4    4   700   50%  3816   96%    3 Contact 10 SE    3818    4    4   700   50%  3816   96%    4 SF-PRO2 290125   3817    4    4   700   50%  3816   96%    5 SF-PB 221124     3816    4    4   700   50%  3816   97%    6 Kookaburra 3     3815    4    4   700   50%  3816   95%    7 Brainlearn 30    3815    4    4   700   50%  3816   97%    8 Stockfish 17     3811    4    4   700   49%  3817   96% 
      • Draw-ratio is very high: 96%, due to mainly Balsa opening suite is used--------------------------------------------------------------------------------------------------------  Fast Bullet (15s+0.3s) tournament SF-PRO2 is with best performance!  Yes, both are 3825 but SF PRO performed 0.5 point better than CorChess..
Rank Name              Elo    +    - games score oppo. draws    1 SF-PRO2 290125   3825    6    6   700   51%  3821   93%    2 Corchess 190125  3825    6    6   700   51%  3821   92%    3 Stockfish 17     3823    6    6   700   50%  3821   92%    4 Contact 10 SE    3822    6    6   700   50%  3821   93%    5 Killfish 021224  3822    6    6   700   50%  3821   91%    6 Brainlearn 30    3821    6    6   700   50%  3821   92%    7 SF-PB 221124     3819    6    6   700   50%  3822   92%    8 Kookaburra 3     3815    6    6   700   49%  3822   94% 
   • Draw-ratio is normal: 92%, due to Balsa + Unique suites are used..------------------------------------------------------------------------------------------------------------   Tie-Break (15s+0.5s): +2 Elo in favor for SF-PRO2 
  1   SF-PRO2 290125   +84/-77/=1115 50.27%  641.5/1276  2   Corchess 190125  +77/-84/=1115 49.73%  634.5/1276
    • Draw-ratio is not so high: 86%, due to only Unique suite is used    • Fast Bullet (15s+0.3s etc.) are played via 64 MB hash-table size    • Plus in fast Bullet: all engines are played via move overhead 200
    GAMES