Breaking News (09.04.2026):     1st of all, many thanks... and congratulations to all chess eng programmers!     Well, another new SIZE CS organized...as far as possible 3700+ Elo played.     And as usual, it seems all stable, no any game recorded to be lost on time!     What's New? In these contests, there are new rules.. 1st tour. Up to 35 MB        (Uncompressed), in the 2nd tour, average: 35 MB - 70 MB are participated,     Where in 3rd tour, average: 70 MB - 110 MB are participated..in same time      That means; I have done my best for more fair toır conditions ;), Actually a      Bit complicated.. such as checking, separately organizing etc. anyhow, after      All..I think it's worth..ok dear chess friends..that's all for now..see you later )     Meanwhile, for anyone missed/interested, here is previous SIZE CS: Results     Sedat 2026 engine is released (with kind permission by Anton CES): Download
    Small (Up to 35 MB) Size Champion Sedat 2026 -Congratulations to Anton CES!
Rank Name               Elo    +    - games score oppo. draws   1 Sedat 2026        3786    7    7   540   58%  3745   82%    2 PlentyChess 7     3778    7    7   540   56%  3746   86%    3 Obsidian 16       3777    7    7   540   56%  3746   87%    4 Integral 7.0      3772    7    7   540   55%  3746   89%    5 Viridithas 19.01  3767    7    8   540   54%  3747   88%    6 Berserk 13        3753    8    8   540   51%  3747   87%    7 SF-Mini 130325    3752    8    8   540   51%  3747   86%    8 Clover 9.1        3752    8    8   540   51%  3747   87%    9 NeonTetra 2.1     3750    8    8   540   50%  3747   89%   10 Caissa 1.24       3749    8    8   540   50%  3747   87%   11 Halogen 16        3747    8    8   540   50%  3748   89%   12 Stormphrax 7      3744    8    8   540   49%  3748   87%   13 Redfish 240122    3735    8    8   540   48%  3748   85%   14 Horsie 1.1        3735    8    8   540   48%  3748   88%   15 Motor 0.9.0       3725    8    7   540   46%  3749   84%   16 Hobbes 1.0        3724    8    7   540   46%  3749   84%   17 RubiChess 0824    3721    7    7   540   45%  3749   84%   18 Starzix 6.1       3720    7    7   540   45%  3749   84%   19 Astra 6.1.1       3717    7    7   540   44%  3749   84% 
 • Overall Draw Ratio is 87%,a bit high..likely due to close in strength engines
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     Medium (35 - 70 MB) Size's Champion Reckless - Congrats to Reckless Team!
Rank Name               Elo    +    - games score oppo. draws    1 Reckless 0.9.0    3791    7    7   572   62%  3729   75%    2 Stockfish 16.1    3781    7    8   572   60%  3730   78%    3 Alexandria 9.0    3765    8    8   572   56%  3731   82%    4 Theoria 0.1       3763    8    8   572   56%  3731   84%    5 K. Dragon 3.3     3753    8    8   572   53%  3732   81%    6 Quanticade 3      3738    8    8   572   51%  3733   83%    7 Pawnocchio 1.9.2  3736    8    9   572   50%  3733   80%    8 Tarnished 5.0     3734    8    8   572   50%  3733   84%    9 Uralochka 3.42a   3712    8    8   572   46%  3735   81%   10 Lizard 11.2       3705    8    8   572   44%  3735   81%   11 Cinder 0.4.1      3701    8    8   572   44%  3736   78%   12 Fat Fritz 2       3700    8    8   572   43%  3736   79%   13 Fritz 20          3699    8    8   572   43%  3736   78%   14 Revenge 4         3687    8    8   572   41%  3737   75% 
 • Overall Draw Ratio: 80%, normal..likely due not so close in strength engines
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Large (70 MB - 110 MB) Size's Champ: Killfish - Congrats to Anton CES, SF Team!Note: Only in this tour, sure for less draws; Bullet TC (15s+0.5s), 32 MB hash used..
Rank Name               Elo    +    - games score oppo. draws    1 Killfish 010426   3833    4    4  1950   51%  3826   92%    2 Corchess 180326   3832    4    4  1950   51%  3826   94%    3 Stockfish 020426  3832    4    4  1950   51%  3826   92%    4 Wordfish 310326   3832    4    4  1950   51%  3826   92%    5 Stockfish+ 1      3831    4    4  1950   51%  3826   93%    6 Sky Mini v2.0     3829    4    4  1950   51%  3826   92%    7 SF-Wald 180226    3828    4    4  1950   50%  3826   93%    8 Hlamnick 200326   3828    4    4  1950   50%  3826   93%    9 ShashChess 41.2   3827    4    4  1950   50%  3826   92%   10 Solidor 211125    3824    4    4  1950   50%  3826   93%   11 HypnoS 120126     3822    4    4  1950   49%  3826   92%   12 Kookaburra 3.11   3821    4    4  1950   49%  3826   92%   13 SF-PRO2 290125    3815    4    4  1950   48%  3827   91%   14 DON 020326        3811    4    3  1950   47%  3827   90% 
• Overall Draw Ratio: 92%, high, due SF-based 3800+ plus so close in strength..  Besides as other reason about why high draws; all played via Large Evalfiles.  Anyhow, for lower draw stats; it's required much 'weaker' engines / openings.
 • Calculated by Bayeselo program / Blue Name = Last Updated Engine Entries
More Details:     • Only Public Engines / Mostly Avx2 / Engine Learning OFF / Default EvalFiles      • For max. stability and performance: HT (SMT) plus Large Page are Disabled       • All of the tournament matches are played with Physical Core/s (not thread/s)      • GUI Options - Concurrent Games 68, that means played at 53% CPU usage     • In the 3rd Bullet tour, all 3800+ Elo engines played with move overhead: 300        Where in the 1st and 2nd Blitz tourneys (sure where possible) are played: 100     • All engines played with a newer Unique suite ver (based on 1400+ openings)   For more fair conditions... each of the used opening line is repeated as twice• All of the tournament games are available (in PGN): Size CS II  / 09.04.2026