Questions tagged [evaluation]
The evaluation of a given position
172
questions
2
votes
3
answers
84
views
Engines and blocked positions
Take your typical totally blocked position, like this one:
Is there an engine today which, on an ordinary laptop, is capable of assessing it as 0.00 in a few seconds?
Position for testing:
FEN (White ...
2
votes
0
answers
55
views
How to make engine evaluation show difficulty of finding right move sequence, not just who's better with perfect play?
Inspired by a recent video where Magnus Carlsen was surprised that the engine thinks his position was a draw. Even top players may find a position considered winning can actually be drawn with perfect ...
- 592
2
votes
0
answers
57
views
Piece values derived computationally [duplicate]
I've read that pieces in chess have values, I think it was the book Chess in a Nutshell, from my childhood. For example, see What is the origin/history of the traditional piece values?. Has computer ...
- 121
1
vote
1
answer
154
views
Why is this position so good for Black?
[Title "White to move"]
[FEN "4r1k1/pp3pb1/2r3pp/8/3R2PP/2N5/PP3P2/1K4R1 w - - 0 27"]
This position is from the TCEC Season 26 superfinal, game 21 with White to play. It looks ...
- 28.1k
0
votes
1
answer
46
views
extract pgn games containing comments into a separate file from a master database
pgn-extract is a fantastic tool and I use it a lot. However, I couldnt find an option to extract games containing comments (e.g. evaluations) into a separate file from a big master pgn database that ...
1
vote
2
answers
102
views
How to add engine evaluation to a pgn file?
I have pgn file of thousands of game, with the clock only, every move have comment like this, this is a pgn file downloaded from lichess:
{[%clk 0:10:00]}
I need to add engine eval to every move like ...
- 249
8
votes
1
answer
234
views
Statistical distribution of centipawn losses
I am wondering what function describes best the statistical distribution of centipawn losses in human chess games. (I do not mean the average centipawn loss for a completed game, but losses of single ...
- 351
0
votes
2
answers
362
views
How to train an efficiently updatable neural network (NNUE)?
I've been working on my own chess engine for a while now. It uses standard minimax search. I've trained a convolutional neural network as a static evaluation function, and I've had some good results ...
- 101
3
votes
2
answers
352
views
Trying to understand evaluation
I'm looking at this position.
[Title "White to move: +10"]
[StartFlipped "0"]
[FEN "r3kb1r/2pnp1p1/p3Bn1p/8/Np1Pq3/4B3/PP21PPP/R2Q1RK w kq - 0 1"]
Material is even, and ...
- 569
1
vote
0
answers
37
views
Training data retrieval
I am currently developing a chess engine which uses minimax algorithm to evaluate chess positions. In addition to this I want to improve my current static evaluation with reinforcement learning. I ...
- 11
0
votes
0
answers
72
views
How do I test my static evaluation function?
I am programming a basic chess AI, within it I have my evaluation function.
It is simple, only uses piece square table values, and does basic calculations for the pawn structure and king safety.
How ...
- 13
0
votes
0
answers
69
views
What is this wide split in the Kmoch nimzo between stockfish's evaluation and master-level move choice?
In the Kmoch Nimzo Indian (sometimes called the f3 nimzo)
[FEN ""]
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3 6. bxc3 c5 (6... dxc4!? 7. e4)
The move 6...c5 is the most popular ...
- 269
0
votes
1
answer
98
views
Why does Stockfish only gives -28 to a game with only a W pawn and a B rook remaining, while it should be resolved in perfect play?
In this position (W resigned) with only a pawn and a rook remaining Stockfish should have resolved the game and say "Mate in xx" (with perfect play).
However Stockfish is said to have ...
- 627
1
vote
1
answer
98
views
Is there any engine that is capable of evaluating the worth of a single piece in a given position?
The value of any piece is dynamic and depends on many factors in the position.
Engines can evaluate the position as a whole with great precision.
They are also capable of "understanding" ...
- 3,498
1
vote
0
answers
107
views
Rating decreased suddenly without reason, FIDE rating displayed wrongly in the website can anyone have such Problems
My son's rating opened when he played international match during August 2023. The rating was displayed in FIDE website on the last date of August, and it was 1156.
Later on September he played another ...
- 11