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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10
votes
1answer
2k views

What longest number of moves for a forced mate position (including draw rules)?

What is the longest (currently discovered) number of moves for a forced mate position where players will use both the 50-move draw rule and the 3-fold repetition rule if it will help them avoid losing?...
3
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3answers
201 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, ...
0
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1answer
53 views

Need help finding a tactics database with motifs

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 ...
31
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8answers
17k 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 ...
13
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2answers
749 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 ...
2
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1answer
78 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, ...
0
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0answers
29 views
1
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1answer
98 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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2answers
100 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 ...
1
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1answer
80 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?
21
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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 ...
3
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0answers
33 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
99 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 ...
2
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1answer
62 views

How do I play 30 second games on chess.com?

My current chess rating is approximately 1400 in 1 minute ,3 minute, and 5 minute game. I have seen some of the other players playing 30 seconds games whose rating is around 1200 but I cannot find an ...
3
votes
1answer
239 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 ...
1
vote
1answer
335 views

Where can I find the saved games or PGN files in the Play Magnus app?

I have completed games on the Play Magnus app and clicked on the option "Export game as PGN file " but I don't know where to find those saved games.
9
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2answers
445 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 ...
21
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5answers
4k 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 ...
5
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2answers
145 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 ...
21
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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 ...
2
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4answers
658 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, ...
0
votes
1answer
296 views

Are the GUIs of ChessBase chess programs the same?

ChessBase (the company) has several chess analysis programs available: Fritz, Komodo Chess, Houdini Pro, Deep Junior and Deep Rybka. Do all of these programs use one and the same graphical user ...
7
votes
3answers
8k views

What endgame, with 3 to 6 pieces, has the longest known forced checkmate?

I am wondering, what endgame, with 3 to 6 pieces, has the longest checkmate with optimal play? Right now, the longest I'm aware of is the two knights versus one pawn endgame, which in certain ...
2
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2answers
764 views

Alphazero-Stockfish game 10 move 19

Given sufficient analysis time, say 24h per move on an decent computer, can current top chess engines (including Stockfish) eventually "see" that move 19 by Alphazero is actually good, and even ...
2
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2answers
1k views

Sesse supercomputer

How many positions per second can the Sesse supercomputer analyze?
9
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3answers
1k 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 ...
4
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1answer
241 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?
2
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1answer
1k 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 ...
3
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2answers
129 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 ...
5
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6answers
1k views

Can you objectively determine who was the best chess player of all time?

There have been a number of statistical attempts (e.g., chessmetrics and edo) or computerized attempts to determine who was the best chess player of all time. The statistical approaches attempt to ...
7
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4answers
778 views

How do top players move so fast?

I've seen 3 minute and 1 minute matches on Chess.com where the players move at insane speeds during the last few remaining seconds of the match. I'm talking in milliseconds, I'd at least take that ...
-2
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2answers
196 views

Lessons to learn from Chess.com [closed]

How much do you know Chess.com website? Chess.com is the most successful website for chess players to use in their chess life. I'm a web developer and I'm going to create a social network for chess ...
1
vote
1answer
177 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'...
18
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5answers
3k views

How useful is a 40-year-old chess book?

I have a chess book which I find great in terms of tone, formatting, etc., but the computer does not agree with some variations I gave it. How much has chess changed since 1977? I imagine the rise of ...
8
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3answers
771 views

Is dead position problem solvable?

In chess, there are some dead positions (FIDE Laws of Chess). 5.2.2 The game is drawn when a position has arisen in which neither player can checkmate the opponent’s king with any series of legal ...
8
votes
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 ...
6
votes
2answers
528 views

Question about the move h5

I recently played a chess game whose link is: https://lichess.org/pCFw1h2w/black#5 After running a computer analysis, I found that in this position: I know that even though Stockfish does not tell ...
3
votes
4answers
231 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 ...
3
votes
5answers
521 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 ...
1
vote
4answers
171 views

The exsistence of IBM’s Deep Blue

How would IBM’s Deep Blue fair against modern day champions like Carlsen? Was it decommissioned after Kasparov's game?
17
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6answers
4k views

Carlsen-Caruana Game 12

Any online search about the recent game 12 in Carlsen-Caruana's WCC is filled with the surprise caused by Carlsen offering a draw when in a (possibly?) winning position. It was announced on chess.com ...
1
vote
2answers
285 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 ...
19
votes
4answers
7k 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 ...
4
votes
3answers
2k views

Validate Engine moves using Perft and divide

I'm developing a small Engine in Java, before trying something more elaborate in C/C++. Right now I'm running some perft tests (the 'perf_talkchess' file), but as expected it has some bugs. Consider ...
1
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0answers
49 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?
2
votes
1answer
275 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,...
-3
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1answer
77 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.
7
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2answers
1k views

What was the source of randomness in the Alpha Zero vs Stockfish match?

My understanding is that Alpha Zero's algorithm was fixed after the "learning" phase, so would it come up with the same move for every position? Was the variability in the match entirely due to a ...
2
votes
3answers
7k views

How many positions per second can a modern supercomputer calculate?

If we created a very powerful supercomputer (as powerful as the current most powerful supercomputers) which was only designed to find forced mates, how many positions could it calculate per second? ...
18
votes
3answers
8k views

Will quantum computers solve chess?

The theory is that there are more that 10^40 positions, and a computer that works with an atomic scale has to be impossibly large(As in galaxy-scale large), and well beyond our current level of ...