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

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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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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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125 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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2answers
79 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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96 views

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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4answers
1k 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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426 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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64 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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226 views

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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104 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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2answers
218 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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157 views

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 ...
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238 views

How does a chess engine mimic an Elo rating

I am a fairly new chess player (say 1400) and I would like to play against Stockfish and win some of the time. If I change the strength to 1400 then what does the algorithm actually do ? Does it make ...
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103 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 ...
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362 views

How to make a computer play like a player?

Since computers have surpassed by now all humans, it should be very easy for it to emulate a strength of an weaker player. So the idea is: Supply a number of games The computer ajusts its options ...
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179 views

What is the Elo rating of a chess computer that can only look 1, 2, 3, … moves ahead

Has anyone calculated the average Elo rating of a chess computer as a function of the number of half moves or plys ahead it can look. I realise that the Elo is also a function of the choice of move ...
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221 views

What fraction of a Pawn do the most powerful chess engines (Komodo, Stockfish, Houdini, Fritz, Hiarcs, Gull, …) use as their evaluation unit?

I've heard that the most common evaluation unit is 1/100 of a Pawn. But some engines use 1/1000 of a Pawn as their evaluation unit. I've also heard that Stockfish used 1/256 of a Pawn as its ...
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2answers
266 views

How to go about beating chess engines?

I play regularly long games (60min each) with Droidfish/Stockfish the depth is always close around 21. From time to time I overlook taktical flaws in my moves, obviously playing on worse positions ...
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Do chess engines store all of the previously analysed positions between moves

I am starting to play with chess engines. I notice that the best chess engines can take several minutes to move. I am wondering why. Before each move the engine examines all legal future moves to some ...
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250 views

Instructive chess positions (and famous games/studies containing these) that engines do not understand well

Basically, I would like to ask people to share their knowledge on famous and/or particularly instructive examples of chess positions, which chess engines do not understand well (i.e. do not evaluate ...
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83 views

What is the number of “CPU” next to each engine's name in engines rating list? And is my computer 1CPU, 2CPU or 4CPU?

Look at this engine rating list which compares all the versions of Stockfish. After the name of each engine we can see one of these three things: 4CPU 2CPU Nothing, which probably means: 1CPU And ...
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262 views

Is it possible for any titled player to beat chess engine?

This topic has been discussed before but I want to reopen this thread because of Stockfish vs Nakamura. I was watching the series on chess.com, it happened few days ago Game 2, I was hoping to see if ...
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257 views

What are the common mistakes make by chess engines at ELO range 1500 - 1800?

I'm a software developer and occasional chess player at elo rating 1500. Chess engines of different level play different type of games with some mistakes according to that given level. I'm ...
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189 views

How do top players use computers to improve their play?

This question is inspired by yesterday's matches between Hikaru Nakamura + Rybka vs Stockfish. Nakamura was allowed to use an older version of Rybka to help him, and Stockfish was allowed to play with ...
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204 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 ...
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226 views

Busted openings

http://en.chessbase.com/post/rajlich-busting-the-king-s-gambit-this-time-for-sure The link is to a chessbase article speaking about a group of researchers who claim that that king's gambit is busted. ...
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475 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 ...
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139 views

Is there a chess engine that allows you to specify which opening it uses?

I would like to practice against a particular opening - outside of bribing smart guinea pigs who know how to play chess, is there any way I can get opponents who always use a certain opening?
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66 views

Can you run “Full Analysis” in Fritz with a different engine?

I have added Stockfish to the Deep Fritz GUI, and I even marked all engines except for Stockfish as inactive. However, when I run the "Full Analysis" it's still using Fritz. Is there a way to use a ...
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179 views

Which interface protocol should I implement for my chess engine?

I am writing a chess engine in Java https://github.com/RomainGoussault/Deepov. I know there are several interface protocols out there (UCI, Winboard protocol, etc) and I don't know which to ...
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Where can I buy the chess engine Komodo? Do I get somekind of bonus premium membership with it? And when will its next version be released? [closed]

I have three questions about the chess engine Komodo. Firstly, where can I buy and order it? I would like to have it in a CD (not just download it). I went into the website of a chess store near ...
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1answer
856 views

GUI for stockfish that can analyse the full game

I am looking for a GUI for stockfish that can analyse the whole chess game and give me the following output: For every move in the game, it should give me a list of N (let it be 3) best moves with a ...
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360 views

Since each engine has its own style of play… which engines are more positional/strategic and which engines are more sharp/tactical?

I’ve heard that each engine has its own style of play. Some are more positional and strategic, while others are more sharp and tactical. And so my question is: could you roughly sort the following ...
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Multiple opening books in Arena?

In Arena, you can select an "Arena main book" which will be the chess opening book that will be displayed in the Book/TB tab. However, is there any way to merge multiple opening books into that tab? ...
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592 views

Chess engine with an ELO of less than 1800

I am looking for an UCI compatible engine with an ELO of less than 1800. Not a version of Houdini or Stockfish with an ELO of 1800. I want a engine with a real ELO rating of 1800 or less. If you can ...
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How to download Stockfish and install it on the Fritz/ChessBase GUI?

I'm on Windows 8. I have the Fritz/ChessBase GUI since I bought both Fritz 12 and Houdini 3 Pro. I would like to know how exactly can I download and install the free latest version (and most powerful ...
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82 views

How do I use the “Mate Search” function of either Houdini 3 Pro x64 or Fritz 12? It doesn’t seem to work…

The “Mate Search” function of my two chess engines, Houdini 3 Pro x64 and Fritz 12, does not work. I click on “Levels” and then on “Mate Search”. Then a small “Mate Search” window pops up. When ...
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268 views

How to check if a move is legal using stockfish?

Let us say that I input a wrong move in stockfish. What answer will stockfish send me back? Or is there a function to check if a move is bad? People I found a solution by myself.
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167 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 ...
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2answers
197 views

How to get position evaluation with UCI?

I am trying to get score about current position directly with UCI (I am using latest stockfish). After reading the protocol I see that these commands ask engine to analyse the position: uci ...
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2answers
148 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, ...
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219 views

How to make own opening book for chess engine?

I am currently working on a chess engine in java. I am using mini max algorithm with alpha beta pruning to select the best move. However it is inefficient to use the algorithm for selecting opening ...
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287 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 ...
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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 ...
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139 views

How to repair black's position in this Game?

In this game black made some mistakes which leads to final position. While analyse this game engine not willing to capture bishop . [Event ""] [Site ""] [Date "2014.07.05"] [Round "-"] [White ...
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464 views

Why does Stockfish website offer many apps to download?

I want to get a strong engine to practice while I'm not home. Look at: http://stockfishchess.org/download, we see a list of apps to download for the Stockfish engine. Why are there three apps to ...
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218 views

Has there ever been a game where multiple humans play against a single chess computer?

I'm wondering if the following scenario has ever been played out: Once side of a chess game is played by multiple humans at once, collaboratively determining what the next move will be. This ...
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214 views

Fastest way to beat Gnu-Chess Easy as black?

This is more of a puzzle. As far as I can ascertain, Gnu-Chess Easy always plays the same, and so the question is, is what are the least amount of moves required to beat Gnu Chess on easy. Just to ...