Just subtract the lost games where the engine makes a mistake in middlegame-ending and leave in the ones in which the book lines ends +{0.30~255.00} or -{0.30~255.00} (below the score 0.30 on book lines end the threshold can be considered insufficient to win because the advantage is too little).
Unfortunately the NNUE nets didn't just raise in a monstrous way the engines strength, they also brought the infamous draw death, for which many computer chess players are leaving their hobby because the games became very boring. A medium-strong processor plus the NNUE net will make the game ending as draw even if the ending books lines positions have the score
±{0.30~0.90}, which is an error in the competition chess opening books world.
Eduard wrote: ↑14/09/2021, 11:38 Thanks, and Congratulations to GOI book.
But I have a problem: I don't play with such slow hardware (slow 1 core). I don't know how to tune a book when moves are played in depth 20 (Stockfish)? I could do that, but it doesn't make much sense for live games on servers. So that you can really improve a book in a meaningful way, it should be played with at least 4 cores.
If I see such positions that are a draw (I play with 6-pieces), how should I improve something? Black didn't do anything wrong. I can't improve that.
Cfish 130721 G - Cfish 130721 P 1-0, My Tournament 2021
1. = (0.00): 80...Kg7
2. = (0.00): 80...Nh7
3. +- (6): 80...Ke7
4. +- (6): 80...Nd7
5. +- (3): 80...Ne6
6. +- (2): 80...Ng6
7. +- (1): 80...Ke8
8. +- (1): 80...Kg8
There are only 200 games in the database. Where are the other 300?
In 7 years of Playchess computer playing I've never seen such a thing. Playing to win looks now almost meaningless, unless they'll find something in the programs to win them, but it will be harder time after time.
