An engine is any machine or computer program that plays chess.

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Possible to simulate specific chess situations?

I played around with cutechess and stockfish to simulate a specific situation in chess. But I ended up playing complete games against a human or cpu. Is it even possible to set up a chess situation by ...
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Any self learning computers playing chess? How good are they?

Computers programmed by humans are better at chess than humans. Any computer programmed by itself (via some self learning algorithm, where even the rules have to be learned, i.e. number of pieces, ...
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Permanent brain

Is permanent brain any beneficial if they share same core? "In chess games between two computers, pondering makes sense only if the competing chess engines use separate processors or cores. If they ...
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fairy chess engine for xboard different from fairymax

Fairymax shipped with the xboard package can play variant chess. Is there any other xboard engine that also plays variant chess? Runs on Linux or *BSD?
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102 views

Chess Engines that have “Deep” in their names?

Why is it that some chess engines have the word deep in their names? It does seem to be a common trend, but not one that is universal.
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219 views

Bishop vs Knight

I read in a book write by Fischer about piece values, and he said that a knight value 3 pawns, and a bishop values 3,25 pawns. I know that in the close positions knights are better, and I also read in ...
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90 views

Recommend chess software for windows 8.1

I've been running an old version Chessmaster: Grandmaster edition on my windows 8.1 laptop when I found a bug (Chessmaster recommended an illegal move), and I thought it was time to change my ...
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97 views

Find magic numbers for bitboards

I am writing a C++ chess engine and I am looking for magic numbers for Little-Endian Rank-File Mapping bitboards to generate moves for sliding pieces. The rival chess website gives magic numbers but ...
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144 views

Are there any chess engines which try to emulate human thinking?

As I understand it chess engines mostly share the basic pattern of having a simple score for the board position and then searching forward with some sort of alpha-beta pruning or similar. Presumably ...
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329 views

What does it mean when engine position scores change when following the “best” move

I'm particularly thinking of Stockfish here, since that is the one I use most, but it seems to happen with other engines. Sometimes you have a position and the recommended move for white might be ...
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88 views

Is there an engine which can give a breakdown of its evaluations

Engines evaluate a position based on a number of factors - material imbalance, king safety, control of the center, pawn structure etc. My understanding is that they then combine these separate ...
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197 views

Could white have won this game?

[Event "Fritz, 19Ply / 19Ply"] [Site "?"] [Date "2015.04.15"] [Round "1"] [White "Stockfish 6"] [Black "Houdini 1.5a w32"] [Result "1/2-1/2"] [ECO "B42"] [PlyCount "292"] [FEN ""] 1. e4 c5 2. Nf3 e6 ...
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147 views

Engine not necessarily playing strong but “attractive”

Does anyone know a chess engine that is not programmed to be as strong as possible, but to play "attractive" chess ? The program should have an aggressive style and play for mate attacks, even if ...
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194 views

adjusting parameters in the engine stockfish 6

I downloaded stockfish 6 (a binary file for windows). It works, but I miss two things : The depth seems to be rather low. How can I increase the selectivity ? How can I achieve that the engine uses ...
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67 views

Matrix representation of piece position for a chess engine

Looking into a source code of a chess engine, I noticed matrices that represent position of some pieces. knightPos = [ -200, -100, -50, -50, -50, -50, -100, -200, -100, 0, 0, 0, 0, 0, 0, -100, ...
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60 views

Is there a free downloadable mini-chess program or 'chess engine'?

The fascinating miniature chess or mini-chess ' that is chess on a 6 by 6 board. I know there are tons of decent chess programs but has anyone written a decent chess program for mini-chess. Is there ...
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62 views

What is approximately the Elo rating of an engine which selects its moves randomly? [duplicate]

An engine which, in a given position, finds all the possible legal moves, and then selects one of them randomly (each move has the same probability of being chosen) and plays it on the board. Its ...
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52 views

Is there a software that analyses games through voice, telling you about moves and what you should have done, like Power Chess 98?

Almost 20 years ago there was a game called Power Chess 98 from Sierra. After every game you played, this sensual voice would analyze move by move telling you what you should have done, etc. It was ...
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91 views

Do better board representations than the standard one exist?

Consider the classical representation of the state of a chess game. I'll draw the board: R BK BNR PPPP PP N Q PP p np p ppp pp r bkqbnr Here is its move list: d5 d5 c4 c6 Nf3 e6 ...
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154 views

How do I change Stockfish's Engine Parameters?

I have no clue how to do this, I want to change its Contempt to -100.
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125 views

What is the gnuchess 5.60 “real” rating?

Anyone can say me what is the gnuchess 5.60 "real" rating with a Atom 1.2GHZ and 2GB RAM 32Bits? or something approximate... According to CCRL, gnuchess 5.60 elo is 2822 ! this website inflate the ...
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49 views

Collecting principal variations during search and using them in ordering?

In an Alpha Beta search (Negamax framework), how does one collect principal variations to use in move ordering and how does one use them, without using a transposition table? And would it be different ...
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How to play against an engine using scidb?

I'v just installed the scidb chess database, and I can't figure how to play against an engine from there.Is this feature even supported ? If it is, how to use it ?
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Static position analysis

This may well be too broad of a question. I'm currently in the process of programming a chess engine, but this is difficult for me as I'm not actually that good of a chess player. I'm having trouble ...
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2answers
84 views

how to evaluate the position inside the search function

using PVS Algorithm with Quiet search and zero window search what should the range of the score be (-infinity, infinity ) could it be as small as (-16000,16000) and what should the search return if ...
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About Alan Turing and chess

I read Turing had some algorithm or method he could use to play chess 'against' this pen and paper algorithm assigning certain numerical values to each piece. Is this true? Is there a pen and paper ...
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125 views

UCI engine command white giving the same move

I need help from someone who knows about UCI engines. I am giving the command by double clicking on stockfishengine.exe and manually entering commands. I wanted to play white and I am running arena to ...
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226 views

Which is the smallest chess engine with ELO at least 2000?

Preferably written in javascript, but the language really doesn't matter.
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193 views

UCI engine state notion

Hi guys I have a problem with using stockfish engine which is using UCI protocol. I wanted to play black and the computer white. But so far I think that uci engine has no notion of state and it gives ...
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265 views

Arena: How to have the engine only analyze and let me play as both black and white

I enjoy watching chess videos where, say, an opening is analyzed and besides the main line the lecturer also explores alternatives and explains why they are bad or good. I would like to do this ...
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511 views

Forced checkmate examples where engines fail

Do you know example where recent chess engines (Houdini, Rybka, Komodo, ...) failed to find a forced checkmate. I guess they must find mate in 1 or 2 all the time but maybe are they failing to be as ...
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197 views

Playing solely against chess engine?

I don't have many friends to play chess with that are at my skill level so many times I am forced to play against the computer. It seems like the computer plays much differently than a human, or at ...
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207 views

An efficient program, which generates all next moves for all pieces in C/C++

I am looking for an efficient (fast) program to generate next moves for all pieces. I need it in C++, because I will program in C++. Thank you!
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209 views

Can you compile Stockfish in Windows without Unix/GNU?

Can you compile Stockfish in Windows (without Unix/GNU), perhaps via Visual Studio? The official "how to compile Stockfish on Windows" suggests using MinGW (see links below) and I am looking for a ...
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120 views

Computer assistance in online blitz chess

I play on chess.com which is usually a very positive and pleasant experience. I like to play five minute time controls with 0 second increments which means it translates to a very fast paced game. ...
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132 views

In a ChessBase opening tree how can we put a column that displays the percent of time each move is played or a column that displays “Perf” minus “Av”?

Here are the columns displayed in an opening tree on ChessBase 12: I would be interested in adding two columns: A column which displays the percent of time each move is played in the position. So ...
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628 views

Stockfish ELO vs search depth

Could Stockfish beat Magnus Carlsen if its moves were calculated with the UCI command "go depth 16"? If not, how can I find the depth "d" at which Stockfish's strength surpasses top GMs? We assume ...
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How do I find people to play chess with me through correspondence?

I really would like to play chess, nevertheless, I do not have access to physical chess players. My question is, how do I find people to play chess with me by email? I have not been successful in ...
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329 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? ...
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How to connect a UCI chess engine play on FICS?

I see that there are several chess bots playing on FICS. I would like to have my own chess engine running on FICS (guest mode is ok), but so far I haven't found any bot source code. I tried eboard and ...
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209 views

Could you show me the code(s) of one or more simple chess program(s) written in C#?

I am a novice in C#. I am looking for the code(s) of one or more chess program(s) written in C#. Preferably, the code(s) should be short, clean, straightforward, very simple, and use only basic things ...
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312 views

Make chess engine play a particular position

I want to be able to train my mating skills by making a chess engine play positions that others have resigned from. Is there a way to make a chess engine play a particular position? I am using ...
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Is studying computer games legal in correspondence chess?

I have recently umm downloaded the Dragon Cookbook from Chessbase. It is filled with human and computer games in the dragon. The thing is, are previously played computer games allowed to be seen in ...
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2k views

Can playing against Computer help?

I am a begineer level player on chess.com with rating around 1500. I play daily 2-3 games with 15|10 mins time control for each player. I find it difficult to get time to study chess books, and was ...
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440 views

Can K + N vs K force black into any corner?

Can white force this position [Title "KN vs K"] [FEN "8/8/8/8/8/8/5k1N/7K w - - 0 1"] into this position? [Title "KN vs K"] [FEN "k7/8/1K1N4/8/8/8/8/8 w - - 0 1"] Background: ...
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1answer
66 views

Looking for information on PARADISE (software)

I am working on developing statistics around the middlegame. During searching I found a little information about PARADISE (PAttern Recognition Applied to DIrecting SEarch), which was developed by ...
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Why does Stockfish give “score mate -7” for this position?

I'm running Stockfish with MultiPV=7: script: setoption name MultiPV value 7 script: ucinewgame script: position startpos moves d2d4 g8f6 c2c4 g7g6 b1c3 d7d5 c1f4 f8g7 f4e5 d5c4 e2e3 b8c6 d1a4 e8g8 ...
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120 views

Why different openings are used by computer players?

If few best computer players would be playing against themselves, chances of white winning would depend on the opening used. That way after simulating thousands of games the best opening would be ...
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308 views

Can a human defeat an engine in a 10-game match if he is given the White pieces and draw odds in every game?

What would happen in a 10-game match between one of the strongest human player (Carlsen, Caruana, Aronian, Kramnik or Anand) and one of the strongest engine (Komodo, Stockfish or Houdini), but with ...
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What are the options to automatically identify games where the first move played was the best by a margin?

Let's imagine I have a pgn file with each game starting from a tactical position, and I want to identify the games where the solution was the only one. Basically an engine would have to evaluate ...