Class Fen

This class provides constants and static functions to manage FEN strings (see https://chessprogramming.wikispaces.com/Forsyth-Edwards+Notation)

Inheritance

System.Object

Fen

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: PonzianiComponents.Chesslib

Assembly: PonzianiComponents.dll

Syntax

public class Fen

Fields

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INITIAL_POSITION

FEN Representation of the starting position in standard chess

Declaration

public const string INITIAL_POSITION = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"

Field Value

Type	Description
System.String

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PIECE_CHAR_BBISHOP

Character representing the black bishop in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_BBISHOP = 'b'

Field Value

Type	Description
System.Char

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PIECE_CHAR_BKING

Character representing the white king in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_BKING = 'k'

Field Value

Type	Description
System.Char

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PIECE_CHAR_BKNIGHT

Character representing the black knight in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_BKNIGHT = 'n'

Field Value

Type	Description
System.Char

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PIECE_CHAR_BPAWN

Character representing the black pawn in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_BPAWN = 'p'

Field Value

Type	Description
System.Char

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PIECE_CHAR_BQUEEN

Character representing the black king in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_BQUEEN = 'q'

Field Value

Type	Description
System.Char

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PIECE_CHAR_BROOK

Character representing the black queen in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_BROOK = 'r'

Field Value

Type	Description
System.Char

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PIECE_CHAR_NONE

Character representing no piece (empty square)

Declaration

public const char PIECE_CHAR_NONE = ' '

Field Value

Type	Description
System.Char

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PIECE_CHAR_WBISHOP

Character representing the white bishop in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_WBISHOP = 'B'

Field Value

Type	Description
System.Char

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PIECE_CHAR_WKING

Character representing the white king in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_WKING = 'K'

Field Value

Type	Description
System.Char

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PIECE_CHAR_WKNIGHT

Character representing the white knight in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_WKNIGHT = 'N'

Field Value

Type	Description
System.Char

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PIECE_CHAR_WPAWN

Character representing the white pawn in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_WPAWN = 'P'

Field Value

Type	Description
System.Char

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PIECE_CHAR_WQUEEN

Character representing the white king in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_WQUEEN = 'Q'

Field Value

Type	Description
System.Char

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PIECE_CHAR_WROOK

Character representing the white queen in Forsyth-Edwards-Notation (FEN)

Declaration

public const char PIECE_CHAR_WROOK = 'R'

Field Value

Type	Description
System.Char

Methods

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CheckValid(String)

Checks if a given string is a valid Fen string. This means that the fen can be parsed and a position can be determined, but not that the position is legal. Fens without 50 move counter and movenumber (as used in EPD) are accepted

Declaration

public static bool CheckValid(string fen)

Parameters

Type	Name	Description
System.String	fen	Fen to be checked

Returns

Type	Description
System.Boolean	treu, if valid

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FenPartFromBoard(Char[])

Creates the first part of a FEN string from a board array

Declaration

public static string FenPartFromBoard(char[] board)

Parameters

Type	Name	Description
System.Char[]	board

Returns

Type	Description
System.String

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GetPieceArray(String)

Calulates an Array of Piece Characters represented by the provided string in FEN Notation. The array representation used is A1 = 0, H1 = 7, H8 = 63

Declaration

public static char[] GetPieceArray(string fen)

Parameters

Type	Name	Description
System.String	fen	The position in FEN representation

Returns

Type	Description
System.Char[]

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ParsePieceChar(Char)

Get's the piece for a piece characteristic (Example Black Queen for 'q' and White Pawn for 'p'

Declaration

public static Piece ParsePieceChar(char c)

Parameters

Type	Name	Description
System.Char	c

Returns

Type	Description
Piece

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ParseSquare(String)

Parses a square provided by it's field name (such as 'a1', 'e5' or 'h8')

Declaration

public static Square ParseSquare(string squareString)

Parameters

Type	Name	Description
System.String	squareString	The square as string

Returns

Type	Description
Square	The square defined by `squareString`

Remarks

This method doesn't make any error checking. If invalid input is provided this might result in a crash

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PieceChar(Piece)

Get's the char used for the piece (Example 'q' for black queen or 'P' for White pawn)

Declaration

public static char PieceChar(Piece piece)

Parameters

Type	Name	Description
Piece	piece

Returns

Type	Description
System.Char

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Swap(String)

Creates a fen string representing an equivalent position with colors reversed

Declaration

public static string Swap(string fen)

Parameters

Type	Name	Description
System.String	fen	the positions which shall be swapped

Returns

Type	Description
System.String	fen string of the swapped position