1 Chess Pieces and Colors

8.16

1 Chess Pieces and Colors🔗ℹ

(require chess/piece)

package: chess

A chess piece is a pawn, knight, bishop, rook, queen, or king. They come in two flavors:

A colored chess piece is a piece associated with a particular player, such as a white bishop or a black king.
An uncolored chess piece isn’t associated with any player, and only represents a type of piece.

procedure
(chess-piece? v) → boolean?
v : any/c

A predicate for chess pieces.

1.1 Uncolored Chess Pieces🔗ℹ

procedure
(uncolored-chess-piece? v) → boolean?
v : any/c

A predicate for uncolored chess pieces. Implies chess-piece?.

value
pawn : uncolored-chess-piece?
value
knight : uncolored-chess-piece?
value
bishop : uncolored-chess-piece?
value
rook : uncolored-chess-piece?
value
queen : uncolored-chess-piece?
value
king : uncolored-chess-piece?

Constants representing uncolored chess pieces.

value
uncolored-chess-pieces : (set/c uncolored-chess-piece?)

An immutable set of all possible uncolored chess pieces.

1.2 Colored Chess Pieces🔗ℹ

procedure
(colored-chess-piece? v) → boolean?
v : any/c

A predicate for colored chess pieces. Implies chess-piece?.

value
white-pawn : colored-chess-piece?
value
white-knight : colored-chess-piece?
value
white-bishop : colored-chess-piece?
value
white-rook : colored-chess-piece?
value
white-queen : colored-chess-piece?
value
white-king : colored-chess-piece?
value
black-pawn : colored-chess-piece?
value
black-knight : colored-chess-piece?
value
black-bishop : colored-chess-piece?
value
black-rook : colored-chess-piece?
value
black-queen : colored-chess-piece?
value
black-king : colored-chess-piece?

Constants representing colored chess pieces.

procedure
(colored-chess-piece #:type type
#:owner owner) → colored-chess-piece?
type : uncolored-chess-piece?
owner : chess-color?

Returns the colored chess piece corresponding to a type piece with owner as its color.

Example:

> (colored-chess-piece #:type pawn #:owner white)
(colored-chess-piece #:owner #<white> #:type #<pawn>)

procedure
(colored-chess-piece-type piece) → uncolored-chess-piece?
piece : colored-chess-piece?

Returns the type of piece, as an uncolored chess piece.

Example:

> (colored-chess-piece-type black-knight)
#<knight>

procedure
(colored-chess-piece-owner piece) → chess-color?
piece : colored-chess-piece?

Returns the chess color that owns piece.

Example:

> (colored-chess-piece-owner white-queen)
#<white>

value
colored-chess-pieces : (set/c colored-chess-piece?)

An immutable set of all possible colored chess pieces.

1.3 Chess Colors🔗ℹ

A chess color is either white or black.

procedure
(chess-color? v) → boolean?
v : any/c

A predicate for chess colors.

value
white : chess-color?
value
black : chess-color?

Constants representing the two chess colors.

1	Chess Pieces and Colors
2	Chess Boards
3	Chess Squares
4	Chess Patches
5	Chess Pictures

1.1	Uncolored Chess Pieces
1.2	Colored Chess Pieces
1.3	Chess Colors