Breaking News - 12.05.2026:The competition is over..congrats and many thanks to all book/engine authors..Especially both beasts (DON and Kara) performed significantly better than all!But in overall performances; the rest well-built books are on Top 10 - 15 ranks.And the ones which are in last ranks...it means they have serious holes, right?Anyhow, no problem at all...even if you are last...the most to focus on fun, andFrankly no pressure to anyone... sometimes simply "go with the flow" attitude.. Meanwhile, for my previous postings about current book championship: News 
     LXXIII Private Book Champion: DON - Congratulations to Vasid Chouhan!      Where the Public Book Champion: Kara - Congratulations to Cevdet Sarı! 
Rank Name                 Elo   +    -  games score oppo. draws   1 DON 281225          2992   15   15  1006   57%  2941   59%    2 Kara 110526         2991   15   15  1006   57%  2941   58%    3 Ban                 2977   15   15  1006   55%  2942   60%    4 Queen's Gambit      2974   15   15  1006   54%  2942   55%    5 Sultan 020526       2970   15   15  1006   54%  2942   62%    6 OPTIMUS 2502        2970   15   15  1006   54%  2942   58%    7 Biyuya v2.5         2966   15   15  1006   53%  2943   54%    8 AdrianOliva upd     2965   15   15  1006   53%  2943   55%    9 Kill Bookson 2      2958   15   15  1006   52%  2943   55%   10 Test 2.0            2957   20   20   610   55%  2924   53%   11 Tunafish 3.2        2955   20   20   610   54%  2924   47%   12 LesChats 090326     2954   15   15  1006   51%  2943   57%   13 SolistaENG 2026E    2950   20   20   580   53%  2926   50%   14 Skynet 180724       2949   20   20   610   53%  2924   45%   15 MentalRing 322      2946   20   20   580   53%  2926   50%   16 Sjeng ct 2010       2945   21   21   610   53%  2924   39%   17 Dara 080824         2942   20   20   580   52%  2926   57%   18 Spark 1.0 own       2942   21   20   610   53%  2924   39%   19 Tucano 8            2940   21   21   580   52%  2926   38%   20 Lizard 050326       2937   20   20   580   51%  2927   53%   21 Karjakin            2932   20   20   610   51%  2924   46%   22 Potential 2.0       2932   21   21   610   51%  2924   36%   23 Hiarcs 13.2         2930   20   20   610   51%  2924   46%   24 Rybka 2.2           2927   21   21   610   50%  2924   37%   25 Nnue 1.0            2925   20   20   610   50%  2924   45%   26 Hiarcs 13.2 own     2925   20   20   610   50%  2924   46%   27 Spike 1.4.1 own     2922   21   21   610   50%  2924   39%   28 OliThink 5.11.9     2920   21   21   610   50%  2924   34%   29 Critter 0.7.0 own   2918   21   21   610   49%  2924   36%   30 Amoeba 2.8          2918   20   20   610   49%  2924   40%   31 Wasp 1.25 own       2916   20   20   610   49%  2924   40%   32 Seawall 220325      2915   21   21   610   49%  2924   34%   33 Deuterium 2018      2914   21   21   610   49%  2924   38%   34 Asymptote 0.8       2913   21   21   610   49%  2924   33%   35 Chiron 1.1a own     2913   20   21   610   48%  2924   39%   36 Anand               2913   20   20   610   48%  2924   50%   37 Boso                2913   20   20   610   48%  2924   51%   38 Shredder 12         2912   21   21   610   48%  2924   39%   39 Cheese 3.3.0        2912   21   21   610   48%  2924   38%   40 Arasan 19.1 own     2911   21   21   610   48%  2924   37%   41 SmarThink 1.8 own   2911   21   21   610   48%  2924   31%   42 Texel 1.03 own      2911   21   21   610   48%  2924   36%   43 Naum 4 own          2911   20   20   610   48%  2924   44%   44 Vajolet2 2.2        2908   21   21   610   48%  2924   36%   45 Igel 2.2.0          2908   21   21   610   48%  2924   39%   46 Karpov              2908   20   20   610   47%  2924   52%   47 Stockfish 1.51 own  2907   21   21   610   48%  2924   38%   48 Andscacs 0.72       2906   21   21   610   47%  2924   37%   49 Gull 1.1            2906   21   21   610   47%  2924   34%   50 Counter 3.5         2903   21   21   610   47%  2924   38%   51 Komodo 1.3 own      2903   21   21   610   47%  2924   36%   52 Nalwald 1.5         2902   21   21   610   47%  2924   35%   53 Weiss 1.1           2902   21   21   610   47%  2924   34%   54 Toga II 4.0         2898   21   21   610   46%  2925   40%   55 PandA               2891   21   21   580   44%  2927   44%   56 Black Marlin 2      2889   21   21   610   45%  2925   35%   57 Murka 3             2888   21   21   600   45%  2926   38%   58 Renegade 0120       2885   21   21   610   45%  2925   37%   59 Myrddin 0.91 own    2879   21   21   610   44%  2925   35%   60 Toga II 4.0 own     2878   22   22   550   44%  2924   37%   61 Dirty Cucumber own  2873   22   22   540   43%  2925   39%   62 Deuterium 2018 own  2867   22   22   550   42%  2924   37% 
    • Calculated by Bayeselo / Hiarcs 13.2 is fixed to 2930 /  Blue Name = Last Update
More Details (15.05.2026):• All book entries (mainly trend) are participated by same chess engine Hiarcs 13.2  E.g AdrianOliva, Ban, Biyuya, Boso, DON, Kara, Kill Bookson, Leschats, Nnue etc.   Where the rest constants (including own books) played by many various engines   Note: All the engines that come as 'without own books' used to play via a GM book  Bear in mind also that all of the used engines are so close to each other in strength• Main Settings (for all book participants); Book Depth: 40 / Best Move as Disabled   Exception, many of trend opening books are played by Authors suggested settings• The current tour overall draw perc. (based on 20700 games) is like GMs, just: 45%• Any Public and Private Book Leader (after 1000+ games) will be titled as Champion • And as usually, all the played tournament games are available (in PGN): LXXIII59  58  57  56  55  54  53  52  LXXII  LXXI  51  50  49  48  47  46  45  44  43  42  LXX  41