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Questions tagged [engines]

Questions relating to chess engines: any computer program that is able to play/analyze chess positions.

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9 votes
2 answers
5k views

Fritz: Full analysis Vs Blunder check

In Fritz, I am interested to know the differences between the Full Analysis and Blunder Check. The differences at the first look seem superficial. For example, I wouldn't mind if there is no natural ...
3 votes
1 answer
707 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 ...
0 votes
1 answer
113 views

App to read pgn surface

Is there anyway to read pgn's on the surface 2 (windows 8), besides using any online tool for that matter.
3 votes
1 answer
491 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 ...
2 votes
2 answers
901 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 ...
5 votes
2 answers
7k 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 ...
1 vote
2 answers
467 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 ...
2 votes
1 answer
118 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 ...
20 votes
4 answers
5k 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 ...
1 vote
1 answer
571 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 I ...
0 votes
1 answer
791 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 ...
1 vote
1 answer
660 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 ...
2 votes
1 answer
654 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. ...
3 votes
3 answers
3k 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 ...
4 votes
2 answers
2k views

Connecting opening book to chess engine

I have file Rybka.exe and when I use it for the first moves, it always goes Nf3 or Nc3 only (even at strength 1000 and depth 1). I assume that is because it doesn't have opening book assigned (?) to ...
3 votes
3 answers
7k 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?
7 votes
4 answers
1k views

Free chess computer game

I am a chess novice. Can someone suggest a good, free chess computer game that I can use to start to learn chess by playing against the computer? Maybe with some different difficult levels...
-7 votes
1 answer
473 views

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 ...
7 votes
2 answers
8k 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 ...
2 votes
1 answer
1k 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 ...
4 votes
1 answer
395 views

Why is engine's speed slow at the start?

I noticed that the nps (nodes per seconds) of different chess engines is very low at the start of the analysis and only after several seconds reaches is peak value. Does anybody have an explanation of ...
1 vote
1 answer
498 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 ...
10 votes
1 answer
6k views

Is there software that simulates the Tri-D or 3-D chess as seen in Star Trek?

I want to try this game without making/buying a board and it is easier to learn to play when the computer can prevent invalid moves. Does any software, preferably freeware, exist which simulates this ...
8 votes
3 answers
1k views

In correspondence games, is it considered cheating to get an engine evaluation of the current position?

Is it considered cheating to simply get an engine score for the current position in an ongoing game without looking at any of the generated lines? I'm guessing the answer is yes, but just curious (and ...
6 votes
2 answers
981 views

Humans against computers: is it an advantage to humans to have more time or less

It's clear to me that humans are at a loss when it comes down to playing against computers. (not only due to the answers to my last question (Humans against computers). But, would humans (maybe a ...
3 votes
1 answer
466 views

Solving the Game of Chess: Trans-Computational in Nature or No?

Mathematicians have categorized chess as a trans-computational problem. A transcomputational problem is one in which a computer would need to exceed the size of the earth in order to have the ...
3 votes
5 answers
2k 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.
0 votes
3 answers
201 views

Rate the difficulty of this computer?

I've just been playing for fun online a little bit, and was wondering how hard the computer I've been playing against is. NOTE: This was made for a javascript competition, and doesn't include ...
2 votes
1 answer
2k views

What is the strongest chess engine for blitz time controls?

There are all kinds of lists of the strongest chess engines at standard time controls. Here's one I picked more or less at random. But does anyone track which engines are strongest at faster time ...
4 votes
1 answer
407 views

Alpha-beta safe on incomplete tree?

I'm writing a simple chess program from scratch on a hobbyist basis. I think there is something fundamental I'm overlooking or don't understand. I read the following http://chessprogramming....
8 votes
1 answer
658 views

Tool that suggests tactics exercises based on game analysis

Does anyone know of any common tool that can go throughout your game database (I have a couple of hundreds of my game's PGNs), and extract tactics that one should be training? I believe something as ...
13 votes
2 answers
5k views

Is there any chess engine that can show if one side has a forced draw?

Is there any chess engine that has an analysis mode that can show if a position is a forced draw by either side? It is common for engines to output evaluations of 0.0 when they detect a draw. But an ...
4 votes
4 answers
695 views

Humans against computers

Are human ratings also progressing, could humans catch up with computers? (maybe playing against strong computers makes us strong) Are team of humans able to defeat computers? Is any competition like ...
5 votes
1 answer
1k views

How high is the level of professional blitz tournaments?

A GM has an elo of at least 2500, and Magnus Carlsen has an elo of almost 2900, so I think you can safely say that most games between grandmasters at a level of 2400-3000 elo. This is obviously very ...
4 votes
2 answers
982 views

How can I automatically extract features from a position?

I am working on a project where I take a chess board position (FEN string converted to binary) & it's evaluation score and feed it to a neural network. My aim is to make the neural network ...
8 votes
1 answer
1k views

Scandinavian: 2. Nc3 d4

I started out with a simple opening: 1. e4 d5 2. Nc3 and then the computer played 2... d4, surprising me, as I had never encountered it before. Since then, I've been trying to analyse the possible ...
5 votes
1 answer
379 views

Using chess engines to find moves sequence to make a position

Is there any way to use chess engines (by commands or GUI tools) to find the sequence of moves need to transform an initial position(P1) to a target position(P2) while the count of moves is exactly N? ...
6 votes
4 answers
3k views

What type of hardware is the most important for analysing with Houdini?

I am going to analyse a lot of games with Houdini 3. The system on which I am going to analyse it is really powerful, but I am curious, what is the most important type of hardware for such analysis? ...
7 votes
4 answers
521 views

Will computer knowledge reach a perfect game, after expanding prepared openings/endgames?

If computers just check in an openings-DB what to do in the first 10, 15 or even 20 moves, and if they just check the endgames-DB at the endgame; wouldn't it reach a point where they have a DB of ...
9 votes
3 answers
631 views

Are there games between top computers which uncovered never-seen-before ideas?

Are there games between top computers which uncovered never-seen-before ideas? And if so, how can humans notice? Addendum: I understand the position of James Christopher in his answer, but my ...
9 votes
1 answer
299 views

How to work out advantage?

I was wondering if there is any internet resource that would tell me who has the advantage in a game of chess if I input the moves? I want to follow my son online in his chess matches but it doesn't ...
6 votes
1 answer
1k views

Why can't I analyze with Stockfish 2.0.1 in Winboard 4.5 beta?

I have to ask an engine-related question: after I installed the Stockfish 2.0.1 engine on my Winboard 4.5 beta, I can't analyze with it. What I mean is, it's giving nothing in the engine output; it ...
7 votes
1 answer
259 views

What does [6/10]-611 stand for?

I am using Chess for Android app by Aart Bik. Fairly easy to use and understand (and difficult to beat). I get these numbers displayed below the noted moves and I think these are analysis symbols ...
8 votes
1 answer
223 views

More Optimal Computer-Found Moves

I am looking for examples of scenarios where the believed-best moves among experts were proven wrong by a computer.
6 votes
3 answers
2k views

How is a computer programmed to play chess? [duplicate]

How is a computer programmed to play chess? What are the ways by which they sort out the moves? My question is not about programming but the idea behind programming to play chess. That can really help ...
6 votes
1 answer
1k views

How do grandmasters prepare against computer endgames?

This question is a sequel to an earlier one . Just as in the openings, computers dominate endgames. Endgame tablebases provide an exhaustive analysis of endgame positions with a small number of ...
8 votes
1 answer
369 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 ...
2 votes
1 answer
1k views

Programming chess engine [closed]

I'm a Java programmer, particularly an Android developer. I'm also a good chess player. My question is where do I start if I want to program a chess engine, may or may not be from scratch. Later I ...
2 votes
1 answer
177 views

Is the World Chess Blitz Championship for Robots going to be broadcast over the Internet? [closed]

Does anyone know if the World Chess Blitz Championship for Chess Robots in Moscow is going to be streamed over the web? Sounds really cool and I'd like to see it.
20 votes
1 answer
4k views

What algorithms and heuristics are popular in computer chess?

Computer chess has exploded in the last twenty years, with a computer world championship being established and many chess computer designers becoming quite profitable from their endeavors. Some of ...

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