Questions tagged [computer-chess]

This tag refers to chess games played by computers. If you want to ask a question about those games, use this tag. Otherwise, use the tag [engines].

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124 views

Why did Kasparov resign at 19. c4 in game 6 of the 1997 Deep Blue match?

The game is justifiably famous and is linked here. [FEN ""] [startply "39"] 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Ng5 Ngf6 6.Bd3 e6 7.N1f3 h6 8.Nxe6 Qe7 9.O-O fxe6 10.Bg6+ Kd8 ...
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1answer
103 views

Obtain information about a a position from Stockfish

I want to know from Stockfish: All possible moves in a position, a.k.a. a depth 1 analysis with no score. If the king is in check, is checkmated, or if there is a draw. The current FEN string, after ...
3
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1answer
166 views

How much does adding an opening book to a relatively weak chess program affect its strength?

Jonathan Schaeffer in One Jump Ahead (via the Chess Programming Wiki): To solve the opening problems of his chess machine, Belle, Ken Thompson typed in opening lines from the Encyclopedia of Chess ...
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1answer
94 views

An incredibile endgame

Is the following position [FEN "8/P1R5/K3p3/4k3/B3b3/8/8/1r6 w - - 0 1"] a win ( for White) or a draw? The position above is derived from a variation of Stockfish vs Komodo TCEC Season 19 ...
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1answer
237 views

List possible moves for player - Haskell implementation

I'm trying to implement a function in Haskell that returns a list containing all possible moves for the player who's up. The function's only argument is a String composed of an actual state of the ...
2
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1answer
120 views

How to measure Leela Chess Zero improvement

I searched Leela website for some statistics about its self-training, the number of games it played with itself in order to assess its progress or to be able to predict whether it is going to win the ...
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0answers
149 views

How often do hash collisions occur in modern chess engines?

This is a question I am asking for a chess engine I am attempting to create. I have read that engines like Stockfish can look at around 100 million positions per second on a good computer. The code on ...
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1answer
184 views

Why does white not play cxd4 here?

I am Black and my opponent is White. Here the computer recommends Rxd4, which I have done (the rook captured bishop here). [FEN "4r1k1/1pp2pp1/p6p/4q3/P2rPn2/2P1QP1P/1P4P1/R4RK1 w - - 0 1"] ...
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3answers
210 views

Fastest way to generate castling moves in a computer chess engine

I am currently developing a Bitboard chess engine using C++. I am in the process of creating the move generator function. I have completed most of it and only the casting part is left. I have used ...
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3answers
1k views

How to play computer from a particular position on chess.com app

I started playing chess a month ago and sometimes I would like to play a hard computer from a particular position (e.g., practicing not blundering in openings, or practice winning a won endgame ...
2
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1answer
231 views

Chess engine does not go for checkmate

I have made a chess engine that can play a decent game of chess. Like a lot of engines it uses a minimax search algorithm with alpha-beta pruning. It uses this simple evaluation function to assign a ...
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2answers
198 views

Stockfish vs Leela zero

In the TCEC Cup 7 , Stockfish and Leela Zero played the below position; Is this a win for White or is Black able to defend this position? Black to Play [Event "TCEC Cup 7"] [White "...
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2answers
2k views

Why didn't the Black rook capture the White bishop?

I am a total newbie in chess. I was playing with an ~intermidiate computer~ as White and made a pretty stupid mistake by playing Bf4. I waved the bishop goodbye, yet Black's rook did not capture it. ...
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1answer
78 views

Need help finding a tactics database with motifs [duplicate]

I am trying to make a neural network which could determine what chess tactic is present in a position. For this, I need to have a database of chess tactics labelled with correct motifs. A similar ...
2
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1answer
129 views

Mac - Chess App

I was trying to play chess on the included chess app on mac, and after the computer's turn, it will not allow me to make any move at all, and I am 100% sure I am not in check as the game just started, ...
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30 views

Can you suggest some good free chess sites to learn about opening, finding checkmates, endgames etc for a beginner in chess? [duplicate]

I wanted to learn chess formally online and want your help finding good websites which teach chess.
1
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1answer
184 views

Have there been computer-vs-computer chess games exceeding 493 moves?

From a FIDE Online Arena Facebook post (which appears copy/pasted from elsewhere), I'm interested in the part in bold: (Image of a chess board with two kings and no pawns nor pieces omitted.) This ...
3
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3answers
292 views

Did Leela Zero miss a win in this position?

Did Leela Zero miss a win in this position from game 106 of the Computer Chess Championship, on move 83 with White to move? [FEN "8/2p1r3/2P4k/1P1pB2p/K2NbP1R/P5r1/8/8 w - - 0 1"] Here, ...
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2answers
224 views

Compiling Stockfish to disable own castling while allowing opponent castling

For artistic purposes, I would like to create and study engine games in which only one side is able to castle. For this, I need to compile a version of Stockfish which never castles, and doesn't ...
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1answer
188 views

Why is stockfish not accepting my move?

I am trying to play with stockfish from terminal. I entered the following commands: position startpos e2e4 d The output was: Why is stockfish not accepting my move?
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0answers
47 views

How do I improve my Chess rating [duplicate]

Its been almost three and a half years since I am playing chess online on chess.com. But I never crossed my Chess rating above 1500 on chess.com. And I think that three years is enough for anyone to ...
4
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1answer
284 views

What should the practical meaning of “blunder” be?

There have been questions about the reliability of computer evaluation, and famous cases in which computers miss-evaluate positions have been given. What I want to ask is more related to the practical ...
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5answers
5k views

Is it possible that a radically different but equally effective playstyle exists?

There seems to be an established "chess canon", whereby general principles exist for long term strategy in the game. There is a well-characterized set of openings, a small subset of which are even ...
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2answers
596 views

Why are world-class engines playing like this?

I was reading about the Lc0 engine and its evolution. Then took a glimpse at the games between Lc0 and the notorious Stockfish. I am not a professional or anything remotely close, but this particular ...
4
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1answer
199 views

Creating a New Neural Network for chess

I'd like to have my own chess engine similar to Leela for personal use. I’d want it to have a decent strength, let’s say 2k, and be able to play with it. I'm wondering if I can use Leela to create a ...
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2answers
202 views

What makes a move “weird”?

I am not sure if this question has been asked before, but I recently had a friend, who is a NM, play a blitz match against stockfish (level 12 I believe) and commentate its playing style. What struck ...
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3answers
3k views

When moves are randomized, is there an inherent advantage to the player who goes first, or the player who goes second?

Imagine we are pitting two automated players (bots) against each other, but instead of thoughtful moves made by the players, they make completely random choices. I realize that this is not really the ...
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4answers
1k views

Breadth-first search vs Depth first search in knowledge-based chess engines

I would like to learn about the difference between depth-first and breadth-first search in knowledge-based chess engines (that, of course, excludes alpha-zero). The difference isn't that clear-cut, ...
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2answers
4k views

Sesse supercomputer

How many positions per second can the Sesse supercomputer analyze?
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3answers
2k views

Knowing that AlphaZero beat Stockfish 8 (28 wins, 0 losses, and 72 draws), what would AlphaZero's rating be?

I found three different questions here on SEC that asked what Stockfish 8's rating was for the match against AlphaZero, but none that asked what AlphaZero's rating should have been after (if it had ...
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9answers
27k views

Is Stockfish 11 (level 20) beatable?

I have heard many people saying, “Hah! I beat Stockfish,” and one saying, “I am the best chess player ever! I beat Stockfish.” So I wonder if it is possible, just to know whether I should try to beat ...
2
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1answer
2k views

Why is Leela better than Leelenstein? (as of January 2020)

Leela Chess Zero is a neural-network based chess engine trained entirely from self play (that's why it has the word "zero" in its name). Leelenstein uses the same binary,* but a different method to ...
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1answer
275 views

How to write an interface to lichess for a millenium board using chesslink?

I am aware of the python chess and chesslink mchess work but would like to attempt to interface it with lichess.org. My purpose would be to play others on lichess using my Millenium board. The API'...
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3answers
4k views

Why is Leela so good at beating Stockfish in the French/Slav?

I notice Lc0 is especially good against Stockfish in French / Slav pawn structures. However, I don't understand why. Here're a couple of games where Leela smoothly outplays Stockfish. Can anyone ...
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10answers
7k views

Is a Finite State Machine a good way to model chess?

A very common model in programming is the Finite State Machine (FSM) (see here for a great worked example.) Is a FSM a good way to model chess? What are the best ways to go about it? What chess ...
4
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2answers
193 views

How many games to get a good idea of computer chess board rating?

I have an old Radio Shack 1850 Electronic Chess Computer, which I would like to know the ELO rating each level plays at. The instructions just give average number of seconds per move. I figure I ...
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2answers
601 views

When to use Clear Hash

I am developing a program that analyzes games sequentially, i.e. one game after another. Below are the parameters. Engine: Stockfish 10 Threads: 2 Hash Table: 4000 Depth: 30 My question is about ...
3
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4answers
324 views

Central control disliked by engine in 1.e4 e6 2.d4 a6 3.c4

Recently I played a chess game that started with the moves: 1. e4 e6 2. d4 a6 and then I played 3. c4 which according to Stockfish is inaccurate. [fen ""] 1. e4 e6 2. d4 a6 3. c4 What is the ...
22
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4answers
10k views

Creating chess engine, machine learning vs. traditional engine?

I am both an avid chess player and computer programmer. I would say that playing chess and programming are the two things I spend the most time doing. Naturally, I am wanting to create my own engine ...
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5answers
2k views

Are engine ratings directly comparable to human-level play?

Yesterday, I play a game against Stockfish 7, and it has 2200 rating points. I drew 2 games, and lost 1. The point is that if I play against a human-rated 2200 player, I would probably have a ...
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0answers
50 views

What computing knowledge do you need to solve chess? [duplicate]

I am a 2300-rated FM in chess. Sometimes I want to know to know is this: what computing knowledge do you need to solve the game of chess? Does anyone know precisely?
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1answer
302 views

How strong is each level of Atari 2600's Video Chess?

I used to play Video Chess on Atari with my dad when I was a kid. What is the approximate FIDE rating of each level?
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1answer
508 views

How to use opening books on mac/linux

I would like to use opening books for my stockfish chess engine, but I'm not sure how to do this. As far as I understand stockfish doesn't support these, so I though I setup a system next to stockfish,...
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1answer
80 views

What is the realistic depth in chess we can set in graphical user interface when we have hardware with 16 core processor with 32 threads? [closed]

I want know the depth we can set in 16 core processor and 32 threads time can be maximum set to 15 seconds. Please share your thoughts and ideas.
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1answer
426 views

Bullet tips and tricks [closed]

Nowadays with speedy Internet and in order to play lots of opponents and to decrease the chance of cheating, people are opting for Bullet or blitz. Generally I prefer to play Larsen opening or ...
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2answers
251 views

Which is the most popular and crowded chess server?

Which is the most popular and crowded chess server? I'm new at computer chess, and want to start playing at servers, but I do not understand where I have to play. I am hearing about freechess, ...
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1answer
4k views

Chess GUI recommendation for linux [closed]

Which chess GUI will be good for Linux. I have tried a lot of GUI's, but as I am new at computer chess, I have no idea about pros and cons of chess GUI's. Which is chess GUI will you recommend? Is ...
3
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1answer
251 views

CLI tool to let chess engines play each other [duplicate]

I'm looking for a command-line tool to let two chess engines play a game or a tournament against each other. The tool should support UCI and/or the xboard protocol and it should allow to save the game ...
13
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2answers
1k views

Have engines refuted any established openings?

Before engines were introduced to chess in late 20th centry, there were many established openings that were played by the top players at that time. I am wondering if any of those openings were refuted ...
3
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1answer
299 views

At what handicap are humans as good as computer?

It is well known that the best chess engines are now far stronger players than the strongest human players. But is it known what the smallest handicap is that makes them roughly equal?