Difference between revisions of "ChessCore"
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− | One sample of ChessCore's extensive GC usage demonstrates its [[Alpha-Beta]] search - at each [[Node|node]], | + | One sample of ChessCore's extensive GC usage demonstrates its [[Alpha-Beta]] search - at each [[Node|node]] it [[Move Generation|generates]] and sorts all moves (or [[Captures|captures]] in [[Quiescence Search|quiescence]]) <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=30265&start=4 Re: I need help, performance wall!] by [[Sven Schüle]], [[CCC]], October 21, 2009</ref>, and allocates the [[Move List|move list]] and each generated [[Moves|move]] on the [[Data#Dynamic Data|heap]] <ref>[https://github.com/3583Bytes/ChessCore/blob/master/ChessCoreEngine/Search.cs#L406 ChessCore/Search.cs at master · 3583Bytes/ChessCore · GitHub - private static List<Position> EvaluateMoves(Board examineBoard, byte depth)]</ref>: |
For some reason, internal class ''position'' encapsulates the move. | For some reason, internal class ''position'' encapsulates the move. | ||
<pre> | <pre> | ||
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=Forum Posts= | =Forum Posts= | ||
+ | * [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=29027 New Member Introduction] by [[Adam Berent]], [[CCC]], July 19, 2009 | ||
+ | * [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=30265 I need help, performance wall!] by [[Adam Berent]], [[CCC]], October 21, 2009 | ||
* [http://www.talkchess.com/forum3/viewtopic.php?f=6&t=31312 ChessBin 00.59] by [[Harun Taner]], [[CCC]], December 28, 2009 | * [http://www.talkchess.com/forum3/viewtopic.php?f=6&t=31312 ChessBin 00.59] by [[Harun Taner]], [[CCC]], December 28, 2009 | ||
Revision as of 23:14, 29 March 2020
ChessCore, (ChessBin.com)
a chess engine by Adam Berent, written in C#.
The ChessBin.com chess engine was documented in a blog format, and has been converted to cross-platform .NET Core dubbed ChessCore, open source under the MIT License published on GitHub [2].
The program makes heavy use of the .NET Core garbage collector (GC)
[3] and is mentioned as buggy in Ron Murawski's engine list [4].
Evaluate Moves
One sample of ChessCore's extensive GC usage demonstrates its Alpha-Beta search - at each node it generates and sorts all moves (or captures in quiescence) [5], and allocates the move list and each generated move on the heap [6]: For some reason, internal class position encapsulates the move.
private static List<Position> EvaluateMoves(Board examineBoard, byte depth) { ... List<Position> positions = new List<Position>(); for (byte x = 0; x < 64; x++) { ... Piece piece = examineBoard.Squares[x].Piece; ... continue if empty or opponent piece foreach (byte dst in piece.ValidMoves) { ... Position move = new Position(x, dst); ... Score move, killers, etc .. positions.Add(move); } } return positions; }
Forum Posts
- New Member Introduction by Adam Berent, CCC, July 19, 2009
- I need help, performance wall! by Adam Berent, CCC, October 21, 2009
- ChessBin 00.59 by Harun Taner, CCC, December 28, 2009
External Links
- GitHub - 3583Bytes/ChessCore: Chess Engine Implemented in .net core
- Chess – Adam Berent
- Computer Chess – Adam Berent
- Computer Chess Information and Resources (Wayback Machine)
References
- ↑ Computer Chess Information and Resources (Wayback Machine)
- ↑ GitHub - 3583Bytes/ChessCore: Chess Engine Implemented in .net core
- ↑ .NET Core - Garbage Collection - Tutorialspoint
- ↑ Chess Engine List from Ron Murawski's Computer-Chess Wiki
- ↑ Re: I need help, performance wall! by Sven Schüle, CCC, October 21, 2009
- ↑ ChessCore/Search.cs at master · 3583Bytes/ChessCore · GitHub - private static List<Position> EvaluateMoves(Board examineBoard, byte depth)