Tagged Questions

The evaluation of a given position

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1
vote
1answer
72 views

Stop SF MultiPV from returning an upperbound

For a given position, I'd like to compute an evaluation of the 3 best moves. I send this to Stockfish: setoption name MultiPV value 3 position startpos go movetime 500.0 // search for 0.5 seconds I ...
1
vote
2answers
95 views

Evaluating Elo rating on a per move basis

I've been a Chess.com user for a little over 3 years now. I play EVERY day, usually have anywhere from 10 to 50 games going on any single day. Since I've started, my rating has only gone up about 150 ...
0
votes
1answer
87 views

Looking for a chess program that evaluates my playing and adapts its level to it

As the title of the question says, I'm looking for a chess program that evaluates my playing and adapts its level to it. Maybe Lucas Chess does this (it's said that it does), but I found the tips of ...
3
votes
2answers
175 views

understanding evaluation function

I am developing a chess program. And have made use of an alpha beta algorithm and a static evaluation function. I have successfully implemented both but I want to improve the evaluation function by ...
1
vote
3answers
134 views

How to evaluate my move with UCI engine?

I am looking for a way to analyse the moves I play. I'm NOT looking for a suggestion of a GUI that does this, or using Chessbase to do this. I want to know how to do this by communicating directly ...
13
votes
1answer
1k views

Is there an easy way to detect draw in King + Pawn vs King endgame?

I know the basics of opposition, but I am struggling to evaluate position for drawness in King + Pawn VS King endgame. A lot of time it is useful to know whether you should make an exchange. For ...
2
votes
1answer
36 views

Could you explain me this part of GM Larry Kaufman's article on “The Evaluation of Material Imbalances”?

This is a stupid question that has more to do with English than with chess, so if other people also think it's stupid I can delete it after I get the answer. Since English is not my mother's tongue I ...
3
votes
2answers
173 views

The Knight is stronger in Rapid/Blitz than it is in classical time controls. How many centipawns does the Knight gain in Rapid and in Blitz?

In blitz, the knight is stronger than the bishop. - Vlastmil Hort I am using this point value system for classical time controls (at least one hour per player): Pawn = 1 Knight = 3.25 Bishop = ...
5
votes
1answer
92 views

Does GM Larry Kaufman's “principle of the redundancy of major pieces” truly exists? Or could this effect be caused by the number of Pawns instead?

The following is an extract from The Evaluation of Material Imbalances by GM Larry Kaufman. I put in bold characters everything that was important for this question. ...
2
votes
1answer
88 views

What are the scales of the numerical evaluations of the strongest engines based on?

Different engines have different scales for their numerical evaluations (for example, Houdini's evaluations are usually much lower than Stockfish's evaluations). This is because different engines use ...
2
votes
2answers
128 views

What relative point values of pieces do engines use?

Humans use: Pawn = 1 Knight = 3 Bishop = 3 Rook = 5 Queen = 9.5 Bishop pair = +0.5 But I would like to know what relative point values do engines use (preferably strong engines, like Stockfish, ...
1
vote
1answer
191 views

What evaluations do various engines give of the starting position at a depth of at least 30?

I am looking for evaluations that various engines give of: The starting position, with no move made yet. The position after 1. e4 The position after 1. d4 The position after 1. c4 The position after ...
-1
votes
1answer
73 views

Is my engine working properly?

I noticed that when I put my Houdini 3 Pro x64 in the "Infinite Analysis" mode, he tends to use a lot of time to evaluate the bad moves... Sometimes he even uses like 30 seconds on the first 10 best ...
1
vote
2answers
107 views

What's the difference between a tempo and a tempi? At the start, how many tempo/tempi is White up? On average, how many tempo/tempi is one Pawn worth?

What's the difference between a tempo and a tempi? At the start, how many tempo/tempi is White up? Half, one, or two? On average, how many tempo/tempi is one Pawn worth? (For players rated near ~2200 ...
3
votes
5answers
469 views

What are the first moves chosen (White), by brute force chess engines?

Title says it all. Feel free to add comment, theory, or explanation. Just to clarify, this is only regarding turn 1 of White, and no proceeding turns after it.
3
votes
2answers
708 views

Is this endgame winnable(for White)?

I ran into this position during play with computer, but I'm not sure if its winnable (I'm, White). Also, any comments on my play/computer's play would be highly appreciated. I'm not sure how to use ...
4
votes
2answers
629 views

I would like to know if this game is winnable for black?

Black to move but unsure of the pieces that would give black a better advantage. Any help would be greatly appreciated. r5k1/pp1qpr1p/3p2p1/2pP4/1n2P3/1P2N1Pb/2PQ1P1P/3RR1K1 b - - 0 1
5
votes
4answers
1k views

How to automatically evaluate a player's performance in a game?

Suppose I have a completed game. I don't have Elo ratings of the players. My purpose is to evaluate a player's performance in the game based solely on his moves. Can this can be done automatically ...
11
votes
8answers
11k views

How many points is each chess piece worth?

I am a beginner at chess; please answer this for me: How many points is each chess piece worth?
7
votes
4answers
353 views

How to gauge someone's chess strength quickly?

I plan on teaching a chess class (5 classes in a sequence, each building off the previous, 1 hour each) to high schoolers, with emphasis on applying chess principles to real life. Now, it'll be ...
8
votes
4answers
970 views

Why do chess engines sometimes miss good moves (or take forever to spot)?

It is not the first time that I found a greatly superior move than the chess engine did, it even takes them a while to understand these moves after you make them. For example, the move 15 ... Bf2 in ...
8
votes
5answers
1k views

Computer evaluations: How trustworthy are they?

Fritz 12 with Rybka gave a friend of mine an evaluation of +3 for white in this endgame position, which turned out to be a draw. But I've heard that +3 from a computer means a guaranteed win with ...
7
votes
1answer
164 views

Elements to take into account when evaluating 'board strength'

As part of a demo for a rules engine I'm dreaming up, I'd like to do an evaluation of a chess board that communicates each side's general strength at that point in time. Advanced things like ...
7
votes
2answers
2k views

What is an accurate way to evaluate chess positions?

I've been interested for a while about a computer chess AI algorithms (and got the chance to work on one at some point) like Minimax, and as the core component of these algorithms is the so-called ...
14
votes
5answers
568 views

What proofs for refuted gambits are there?

I've stumbled upon this article a while ago, and I've also seen refutations for the Muzio Gambit (Joseph Kling & Bernard Horwitz - Chess Studies on Endings of Games). I'm wondering what other ...