Questions tagged [software]

Questions about chess-related software, but not including chess-playing engines; there's a more specific tag for those questions, the [engines] tag.

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Parsing PGN with "recursive" annotations [closed]

A colleague of mine is the evil twin of Robert Hübner when it comes to annotations. This time it was {([ with some a)b) thrown in for good measure. When I scanned the game from old club zines, it ...
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-1 votes
1 answer
196 views

Computerized Chess games Analysis

I am looking for the ultimate chess game analysis tool I used lucas chess which is great but lack some details, I also tried creatica https://chessgame-analyzer.creatica.org/ which is good also but ...
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8 votes
2 answers
790 views

Am I misunderstanding the --materialz option on pgn-extract, or is it not quite working right?

I ran the following pgn extract command pgn-extract --materialz "n3+q*r*b*p* n2+q*r*b*p*" --output knights.pgn db.pgn I expected this to find games where at some point in the game, one side ...
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1 vote
1 answer
334 views

Is there any (free) online tool for calculating Glicko-2 ratings after a game?

I am looking for a tool where I can input the Glicko-2 ratings of 2 players and the result of the match (1–0, 0–1 or draw). Also, the rest of the Glicko-2 parameters, i.e., each player’s rating ...
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1 vote
0 answers
34 views

Edit position on PGN ChessBook [closed]

Is it possible to create a given position (for example a position in a book) on PGN ChessBook app to analyze, instead of playing the whole game?
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3 votes
1 answer
43 views

How to import a game into XBoard from the command line

Is it possible to import a game into XBoard from the command line? I am unable to find anything on it on the XBoard website or the XBoard man page, although I may have missed something.
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1 vote
1 answer
166 views

Average number of moves until checkmate for two players of unequal strenth

Suppose a game is played, until checkmate, between players of unequal strength, say 1800 vs 2800. What would be the average number of moves be for, say, 1000 games? I also ponder 2000 vs 2800 and 2200 ...
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2 votes
1 answer
76 views

How are chess boards updated in real time in Blitz and Rapid tournaments?

In Rapid and Blitz tournaments, there are usually multiple over-the-board chess games going on simultaneously. It seems many websites and live streams have access to the chess boards of many players, ...
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4 votes
6 answers
15k views

Why don’t chess engines use Node.js?

I agree that this might look like a question that Google has the answer to, but I could not find the answer. C++ is a language that many chess engines are built on, like Stockfish and Leela Chess Zero,...
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  • 835
3 votes
3 answers
1k views

App which transforms chess moves into chess positions

I am interested is there an app which transforms written moves into chesd position? In other words, if I paste written chess game (for example 1. c3 d5 2. d4 Nf6 3. Nf3 Bg4 4. e3 e6 5. Be2 Be7 6. Ne5 ...
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1 vote
2 answers
113 views

How do you input FEN into Lucas Chess?

How can I input a position into Lucas Chess, in order to view the underlying engine's analysis through Lucas Chess's GUI? The position would be specified in FEN. Under its menu Tools->PGN, Lucas ...
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0 votes
0 answers
50 views

Does a GUI exist to play on www.lichess.org with a Windows Computer? [duplicate]

I noticed that if you play with a GUI the chess board looks way better. For example, I use ChessBase Reader to play in playchess.com I would like to know if there is a GUI for www.lichess.org
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1 vote
0 answers
130 views

Why is futility pruning causing an Elo drop in my engine?

I'm getting weird results when introducing futility pruning into Blunder. On the one hand, I'm getting a pretty sizeable reduction in nodes, and I'm searching a full ply deeper for some positions (e.g....
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2 votes
0 answers
250 views

Chessmaster: Modern version of lectures?

Thing 1: This lichess study says Examining positions from Josh Waitzkin's academy, Larry Christiansen's attacking chess, and other exercises or games from this (now) ancient chess program in light of ...
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2 votes
0 answers
58 views

Online tool for chess analysis: comment, add variations, insert diagrams, print

Sometimes I like to analyze and annotate my own games and print them on paper. This would usually include commenting some moves, adding variations, inserting diagrams for certain positions, etc. I ...
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  • 133
-3 votes
1 answer
103 views

meaning of fractional depth in chessbase?

when I load fritz 17 in chessbase, it often shows depth as for e.g. 18/25. what does this mean?
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4 votes
1 answer
769 views

Problems with computing the Zobrist hash for a chess position?

I'm attempting to use Zobrist hashing in my chess engine, but I'm running into some difficulties getting it to work correctly. I'm using the random numbers from this site so I can test my results ...
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3 votes
1 answer
201 views

Chess Engine Using LazySMP

I was hoping to parallelize the chess engine I was currently working on. I have done some research on some of the various types of algorithms such as YBWC, ABDADA, and LazySMP which is currently used ...
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1 vote
0 answers
247 views

ChessBase and Scid vs Pc Annotation

I am legally blind, but I love to play chess. I like to annotate games. Chess.com does it right in my opinion, but only because the arrows are thick and opaque. I am wondering, is it possible to ...
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  • 11
1 vote
3 answers
175 views

Alternative to ChessBase Replay training feature

I've used the ChessBase Replay training feature on my friends PC and now I am missing it. ChessBase is too costly for me. I've tried lichess.org: Practice with computer but instead of playing the ...
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0 votes
0 answers
75 views

How to validate chess moves with a server? Winboard and Unity 2020.3

I'm looking for advice on how to implement online chess move validation using a winboard chess engine. I am creating a mobile battle chess game in Unity 2020.3. Right now I have the possible moves for ...
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2 votes
1 answer
135 views

How to create a file in Scid-vs-pc; new chess pieces?

I am a Linux hobbyist and I would like to know if someone could help me understand what steps I should follow to create this chess piece file in scid-vs-pc: http://gorgonian.weebly.com/scid-vs-pc.html ...
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8 votes
3 answers
882 views

Is there a free online chess repertoire tool?

Is there a free online chess repertoire tool? It can be some place where you register, save variations and comments, and navigate with a board what you do. I was used to chessply, but apparently it ...
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1 vote
2 answers
331 views

Is there any android app or software that allow me to create my own chess puzzle so I can solve or study it later on?

I want to improve my tactics skills; is there any Android app or software that allows me to create my own chess puzzle so I can solve or study it later on?
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5 votes
1 answer
403 views

Which pairing programs have been authorized by FIDE for use in FIDE rated tournaments?

There are lots of questions about pairing programs here, some of them mention being authorized by FIDE, but how can I check and know which programs are currently authorized?
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  • 74.5k
11 votes
6 answers
2k views

Website or program that creates puzzles from blunders in your past games

I'm looking for a website or program that would look at your past games on Lichess or chess.com and find moves that you played that were blunders and create puzzles around those
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  • 356
2 votes
1 answer
337 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 ...
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2 votes
1 answer
149 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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  • 281
2 votes
0 answers
69 views

Looking for a PGN reader and writer for Windows 10

I'm looking for a PGN reader and writer for Windows 10. I want to be able to modify and write if I want to enter new lines, all while keeping the format in PGN. I've downloaded ChessX, and it would ...
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  • 21
2 votes
1 answer
252 views

Is there software which generates novel chess opening traps?

Opening traps can sometimes lead to quick wins, but fail against opponents who are prepared or have time to calculate. Thus... Question: Is there software which generates novel chess opening traps? I ...
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4 votes
1 answer
165 views

Position Similarity Metrics

I'm looking for metrics that quantify how similar/different two positions are. I have found a paper that used pawn structures to search for similar games in a database. This one tries to use reachable ...
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  • 586
2 votes
2 answers
160 views

How do endgame tablebases calculate checkmates to do retrograde analysis on?

I understand that once endgame tablebases get checkmates, they do retrograde analysis and are able to calculate forced wins. However, how do they calculate the checkmate in the first place? Do they ...
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5 votes
1 answer
840 views

HalfKP Structure for Stockfish / Shogi NNUE - how does it work?

Stockfish now uses a neural network for position evaluation. The structure of this neural network was introduced for Shogi by Yu Nasu in the paper dubbed "Efficiently updatable neural network - ...
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  • 499
2 votes
1 answer
50 views

A tool to search for certain moves played

Is there a tool to display how many times a certain move has been played? Note that I do not mean openings, I mean specific moves. Moves that I am looking for would be castling with checkmate or ...
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  • 555
1 vote
1 answer
129 views

How do I find bitboard attack maps non-manually?

I am writing a C++ chess engine based on the magic bitboard, where ordering for bitboards is from LSB to MSB in Little-Endian Rank-File mapping. I'd like to have a 6x64 dimension 2D array for all ...
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-2 votes
1 answer
178 views

Chess training to get to 2000 rating [closed]

I have been playing chess (sometimes a lot, sometimes none) for a very long time. I want to become an international master in 4 years, or have a rating of 2000. I am 15 right now and have a rating of ...
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3 votes
2 answers
79 views

Sites to understand errors

There are several sites where one can analyse his/her game. I often use lichess at the end of a game to see where I made mistakes. What I miss, though, is some kind of explanation of why a certain ...
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  • 219
2 votes
2 answers
237 views

What are some of the best free puzzle rush apps?

I'm looking for a puzzle rush app that's free and does not require a subscription. I tried using the Chess.com app, but there's a limit on the number of times you can play in a day.
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  • 121
3 votes
4 answers
442 views

How can I do batch analysis of games?

I want to run a batch analysis of games and produce output like Lichess computer analysis. I want to do this offline on my desktop PC. Since Stockfish is free, there must exist some solution. Does ...
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4 votes
1 answer
123 views

Chess tactics software which can read files

Lichess publishes tactics problems which can be downloaded from database.lichess.org. The file is in csv format. Which software can be used to read and play positions from this csv file?
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3 votes
1 answer
375 views

Iterative deepening: what should I do with previous results?

I implemented a negamax with alpha beta and aspiration windows. Now, it also has iterative deepening. When I let the engine run for 15 seconds in the below position, it finds a move at depth 2 with ...
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  • 133
0 votes
1 answer
183 views

What are some free chess software for showing the best moves in the final output analysis?

I appreciate any free chess software that can be used for analyzing chess games. However, some of them are difficult to use, showing a large number of lines with many moves which are not displayed in ...
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2 votes
2 answers
124 views

Is there a software where we can query historical games to find patterns without inputting the exact chess position?

Suppose one wants to find: A list of games where White/Black gave each other check more than 10 times. A list of games where there were Black and White gave each other check in consecutive steps A ...
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1 vote
4 answers
428 views

Can pieces follow different paths from one square to another in a single move?

I am implementing a chess game. I am aware of the rules but I have not played it much. I need clarification on a small point. Suppose a player legally moves a piece from square A to square B. Consider ...
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3 votes
2 answers
139 views

What are some of the chess databases in the public domain that can be used for commercial purpose?

What chess databases allow commercial use without having to reveal source code as part of their license? I see a few chess databases online, even the huge databases on lichess. I wonder which of these ...
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  • 1,745
4 votes
2 answers
299 views

An online dictionary of fairy chess pieces indexed by move

While trying to accurately describe the intended movement of the "doubled knight" in this chess puzzle, I realized that what I really wanted right at that instant was a "dictionary"...
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2 votes
1 answer
212 views

Why does AlphaZero implement time steps in its input layers?

I'm trying to build my own chess engine using neural nets, and have been researching papers from Deepmind about their algorithm implemented in AlphaZero. Since chess is a game with perfect information ...
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10 votes
1 answer
784 views

Downloading Games From Lichess

I'd like to be able to automate downloading specific games that have been played on Lichess. Is there any software available that, if given useful information such as the Lichess usernames, colours, ...
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  • 4,031
1 vote
1 answer
67 views

Batch Solve Tactical Positions

What is the best software to take a pgn file of positions and solve them in a one-step operation? I am not referring to chess compositions or "mate in n" problems but tactical positions. Is ...
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1 vote
1 answer
585 views

running stockfish with docker and docker-compose

I have access to a powerful computer at work so naturally I want to run a chess engine on it (stockfish for now and later leela). I am trying to use docker-compose to link a stockfish image and a ...
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