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For more information and download visit Github

Chess System Tal 2.0

Chess-System-Tal-NNUE-2 is a UCI chess engine written in C++ by Chris Whittington and Ed Schröder.

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Features

  • UCI-compatible chess engine

  • Specifically designed to play in style of the legendary Tal

  • Public executable, private source code

  • Elo 2914 Blitz rating on Nightmare.nl server

  • June Blitz 2023 authors tourney, 1st=

  • Previous Blitz tourney 2nd=

  • Previous Blitz tourney outright 1st

  • Top five ranking (probably) among freely available chess engines

Requirements

  1. Download and install a User Interface (UI) software compatible with UCI chess engines.

  2. Load Chess-System-Tal-NNUE-2 as a chess engine in the chosen UI software.

Playing Style

Chess System Tal is designed to play aggressively and its style is measured by 2 tools we have in use, the EAS tool (Engine Aggressiveness Score) from Stefan Pohl and the private ES (Engine Sacrifice) tool from Ed Schröder that has its focus on sacrifices only. For demonstration purpose we use 17.600 training games from Chess System Tal versus other engines which are about in the same expected top-10 elo pool.

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Engine Aggressiveness Score

Rank  EAS-Score  sacs   shorts  draws  moves  Engine/player
-------------------------------------------------------------------
  1    121541  14.26%  24.55%  15.88%   79   Chess-System-Tal-2.00  
  2    108835  10.00%  26.97%  18.92%   76   CST-1.35-V20-E520  
  3    104943  10.89%  27.72%  21.11%   81   Stockfish_12  
  4     88023  11.06%  22.55%  19.40%   80   SlowChess_2.9  
  5     62882  07.69%  17.08%  23.92%   84   Koivisto_9.0  
  6     59175  08.63%  15.92%  25.65%   85   Berserk_10  
  7     58259  05.68%  23.95%  32.05%   78   Seer-2.6  
  8     45961  07.58%  14.18%  30.13%   86   Koivisto_8.0  
  9     42823  09.39%  14.36%  26.01%   88   Berserk_9 

Engine Sacrifice tool

Engine Sacrifice Tool

PGN database     :  pgn\sacs.pgn
Read PGN game :  1.111

Engine                           Won Loss     Perc    Points
Chess-System-Tal-2.00     773  338   69.6% 105670
Stockfish 12                      66    67   49.6%   50616
Berserk 10                        58    70   45.3%   40328
Koivisto 9.0                       50  102   32.9%   25657
Berserk 9                          51  110   31.7%   19639
CST-1.35-V20-E520            33    73    31.1%  15566
Koivisto 8.0                       31  133    18.9%    9262
Seer-2.6                             23  130    15.0%    4359
SlowChess 2.9                    26    88    22.8%      940

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Contributing

 

Contributions to Chess-System-Tal-NNUE-2 are welcome! If you would like to contribute, please contact us at https://prodeo.actieforum.com/

Queen sacrifices are rare between top engines, enjoy the 3 examples.

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