chess

package
v0.9.3 Latest Latest
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 Go to latest Published: Sep 21, 2024 License: MIT Imports: 11 Imported by: 0

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Functions

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Types

type Bitboard 

type Bitboard uint64
const (
	BbLight Bitboard = 0xaa55aa55aa55aa55
	BbDark  Bitboard = 0x55aa55aa55aa55aa
)
const (
	BbEmpty Bitboard = 0
	BbFull  Bitboard = math.MaxUint64
)

func BbAntidiag 

func BbAntidiag(d int) Bitboard

func BbDiag 

func BbDiag(d int) Bitboard

func BbFile 

func BbFile(f File) Bitboard

func BbRank 

func BbRank(r Rank) Bitboard

func BitboardFromCoord 

func BitboardFromCoord(c Coord) Bitboard

func (Bitboard) DepositBits 

func (b Bitboard) DepositBits(x uint64) Bitboard

func (Bitboard) GetFirst 

func (b Bitboard) GetFirst() Coord

func (Bitboard) Has 

func (b Bitboard) Has(c Coord) bool

func (Bitboard) Has2 

func (b Bitboard) Has2(f File, r Rank) bool

func (Bitboard) IsEmpty 

func (b Bitboard) IsEmpty() bool

func (Bitboard) Len 

func (b Bitboard) Len() int

func (*Bitboard) Next 

func (b *Bitboard) Next() Coord

func (*Bitboard) Set 

func (b *Bitboard) Set(c Coord)

func (Bitboard) String 

func (b Bitboard) String() string

func (*Bitboard) Unset 

func (b *Bitboard) Unset(c Coord)

func (Bitboard) With 

func (b Bitboard) With(c Coord) Bitboard

func (Bitboard) With2 

func (b Bitboard) With2(f File, r Rank) Bitboard

func (Bitboard) Without 

func (b Bitboard) Without(c Coord) Bitboard

func (Bitboard) Without2 

func (b Bitboard) Without2(f File, r Rank) Bitboard

type Board 

type Board struct {
	// contains filtered or unexported fields
}

func BoardFromFEN 

func BoardFromFEN(fen string) (*Board, error)

func InitialBoard 

func InitialBoard() *Board

func NewBoard 

func NewBoard(r RawBoard) (*Board, error)

func (*Board) BbCell 

func (b *Board) BbCell(c Cell) Bitboard

func (*Board) BbColor 

func (b *Board) BbColor(c Color) Bitboard

func (*Board) BbPiece 

func (b *Board) BbPiece(c Color, p Piece) Bitboard

func (*Board) CalcOutcome 

func (b *Board) CalcOutcome() Outcome

func (*Board) Castling 

func (b *Board) Castling() CastlingRights

func (*Board) CellAttackers 

func (b *Board) CellAttackers(coord Coord, c Color) Bitboard

func (*Board) Checkers 

func (b *Board) Checkers() Bitboard

func (*Board) Clone 

func (b *Board) Clone() *Board

func (*Board) EpDest 

func (b *Board) EpDest() MaybeCoord

func (*Board) EpSource 

func (b *Board) EpSource() MaybeCoord

func (*Board) Eq 

func (b *Board) Eq(o *Board) bool

func (*Board) FEN 

func (b *Board) FEN() string

func (*Board) GenLegalMoves 

func (b *Board) GenLegalMoves(preset MoveGenPreset, res []Move) []Move

func (*Board) GenSemilegalMoves 

func (b *Board) GenSemilegalMoves(preset MoveGenPreset, res []Move) []Move

func (*Board) Get 

func (b *Board) Get(c Coord) Cell

func (*Board) Get2 

func (b *Board) Get2(f File, r Rank) Cell

func (*Board) HasLegalMoves 

func (b *Board) HasLegalMoves() bool

func (*Board) IsCellAttacked 

func (b *Board) IsCellAttacked(coord Coord, c Color) bool

func (*Board) IsCheck 

func (b *Board) IsCheck() bool

func (*Board) IsInsufficientMaterial 

func (b *Board) IsInsufficientMaterial() bool

func (*Board) KingPos 

func (b *Board) KingPos(c Color) Coord

func (*Board) MakeLegalMove 

func (b *Board) MakeLegalMove(mv Move) Undo

func (*Board) MakeMove 

func (b *Board) MakeMove(mv Move) (Undo, error)

func (*Board) MakeMoveSAN 

func (b *Board) MakeMoveSAN(s string) (Undo, error)

func (*Board) MakeMoveUCI 

func (b *Board) MakeMoveUCI(s string) (Undo, error)

func (*Board) MakeSemilegalMove 

func (b *Board) MakeSemilegalMove(mv Move) (Undo, bool)

func (*Board) MakeUCIMove 

func (b *Board) MakeUCIMove(um UCIMove) (Undo, error)

func (*Board) MarshalJSON added in v0.9.1 

func (b *Board) MarshalJSON() ([]byte, error)

func (*Board) MoveCounter 

func (b *Board) MoveCounter() uint8

func (*Board) MoveNumber 

func (b *Board) MoveNumber() uint32

func (*Board) Pretty 

func (b *Board) Pretty(style PrettyStyle) string

func (*Board) Raw 

func (b *Board) Raw() RawBoard

func (*Board) Side 

func (b *Board) Side() Color

func (*Board) String 

func (b *Board) String() string

func (*Board) UnmakeMove 

func (b *Board) UnmakeMove(u Undo)

func (*Board) UnmarshalJSON added in v0.9.1 

func (b *Board) UnmarshalJSON(data []byte) error

func (*Board) ZHash 

func (b *Board) ZHash() ZHash

type CastlingRights 

type CastlingRights uint8
const (
	CastlingRightsEmpty CastlingRights = 0
	CastlingRightsFull  CastlingRights = 15
	CastlingRightsMax   CastlingRights = CastlingRightsFull + 1
)

func CastlingRightsFromString 

func CastlingRightsFromString(s string) (CastlingRights, error)

func (CastlingRights) Has 

func (r CastlingRights) Has(c Color, s CastlingSide) bool

func (CastlingRights) HasColor 

func (r CastlingRights) HasColor(c Color) bool

func (CastlingRights) IsValid 

func (r CastlingRights) IsValid() bool

func (CastlingRights) MarshalJSON added in v0.9.1 

func (r CastlingRights) MarshalJSON() ([]byte, error)

func (*CastlingRights) Set 

func (r *CastlingRights) Set(c Color, s CastlingSide)

func (CastlingRights) String 

func (r CastlingRights) String() string

func (*CastlingRights) UnmarshalJSON added in v0.9.1 

func (r *CastlingRights) UnmarshalJSON(data []byte) error

func (*CastlingRights) Unset 

func (r *CastlingRights) Unset(c Color, s CastlingSide)

func (*CastlingRights) UnsetColor 

func (r *CastlingRights) UnsetColor(c Color)

func (CastlingRights) With 

func (r CastlingRights) With(c Color, s CastlingSide) CastlingRights

func (CastlingRights) Without 

func (r CastlingRights) Without(c Color, s CastlingSide) CastlingRights

type CastlingSide 

type CastlingSide uint8
const (
	CastlingQueenside CastlingSide = iota
	CastlingKingside
	CastlingSideMax
)

func (CastlingSide) IsValid 

func (s CastlingSide) IsValid() bool

type Cell 

type Cell uint8
const (
	CellEmpty Cell = iota
	CellWhitePawn
	CellWhiteKing
	CellWhiteKnight
	CellWhiteBishop
	CellWhiteRook
	CellWhiteQueen
	CellBlackPawn
	CellBlackKing
	CellBlackKnight
	CellBlackBishop
	CellBlackRook
	CellBlackQueen
	CellMax
)

func CellFromByte 

func CellFromByte(b byte) (Cell, error)

func CellFromParts 

func CellFromParts(c Color, p Piece) Cell

func CellFromString 

func CellFromString(s string) (Cell, error)

func (Cell) Color 

func (c Cell) Color() (Color, bool)

func (Cell) HasColor 

func (c Cell) HasColor(co Color) bool

func (Cell) IsFree 

func (c Cell) IsFree() bool

func (Cell) IsOccupied 

func (c Cell) IsOccupied() bool

func (Cell) IsValid 

func (c Cell) IsValid() bool

func (Cell) MarshalJSON added in v0.9.1 

func (c Cell) MarshalJSON() ([]byte, error)

func (Cell) Piece 

func (c Cell) Piece() (Piece, bool)

func (Cell) String 

func (c Cell) String() string

func (Cell) ToByte 

func (c Cell) ToByte() byte

func (Cell) ToRune 

func (c Cell) ToRune() rune

func (*Cell) UnmarshalJSON added in v0.9.1 

func (c *Cell) UnmarshalJSON(data []byte) error

type Color 

type Color uint8
const (
	ColorWhite Color = iota
	ColorBlack
	ColorMax
)

func ColorFromByte 

func ColorFromByte(b byte) (Color, error)

func ColorFromString 

func ColorFromString(s string) (Color, error)

func (Color) Inv 

func (c Color) Inv() Color

func (Color) IsValid 

func (c Color) IsValid() bool

func (Color) LongString 

func (c Color) LongString() string

func (Color) MarshalJSON added in v0.9.1 

func (c Color) MarshalJSON() ([]byte, error)

func (Color) String 

func (c Color) String() string

func (Color) ToByte 

func (c Color) ToByte() byte

func (*Color) UnmarshalJSON added in v0.9.1 

func (c *Color) UnmarshalJSON(data []byte) error

type Coord 

type Coord uint8
const CoordMax Coord = 64

func CoordFromParts 

func CoordFromParts(f File, r Rank) Coord

func CoordFromString 

func CoordFromString(s string) (Coord, error)

func (Coord) Add 

func (c Coord) Add(delta int8) Coord

func (Coord) Antidiag 

func (c Coord) Antidiag() int

func (Coord) Diag 

func (c Coord) Diag() int

func (Coord) File 

func (c Coord) File() File

func (Coord) IsValid 

func (c Coord) IsValid() bool

func (Coord) MarshalJSON added in v0.9.1 

func (c Coord) MarshalJSON() ([]byte, error)

func (Coord) Rank 

func (c Coord) Rank() Rank

func (Coord) Shift 

func (c Coord) Shift(d CoordDelta) MaybeCoord

func (Coord) String 

func (c Coord) String() string

func (*Coord) UnmarshalJSON added in v0.9.1 

func (c *Coord) UnmarshalJSON(data []byte) error

type CoordDelta 

type CoordDelta struct {
	File int8
	Rank int8
}

type File 

type File uint8
const (
	FileA File = iota
	FileB
	FileC
	FileD
	FileE
	FileF
	FileG
	FileH
	FileMax
)

func FileFromByte 

func FileFromByte(b byte) (File, error)

func (File) IsValid 

func (f File) IsValid() bool

func (File) String 

func (f File) String() string

func (File) ToByte 

func (f File) ToByte() byte

type Game 

type Game struct {
	// contains filtered or unexported fields
}

func GameFromUCIList 

func GameFromUCIList(b *Board, ucis string) (*Game, error)

func NewGame 

func NewGame() *Game

func NewGameWithFEN 

func NewGameWithFEN(fen string) (*Game, error)

func NewGameWithPosition 

func NewGameWithPosition(b *Board) *Game

func (*Game) CalcOutcome 

func (g *Game) CalcOutcome() Outcome

func (*Game) ClearOutcome 

func (g *Game) ClearOutcome()

func (*Game) Clone 

func (g *Game) Clone() *Game

func (*Game) CurBoard 

func (g *Game) CurBoard() *Board

The board updates automatically after calls to Push...() or Pop().

Do not mutate the returned board.

func (*Game) CurPos 

func (g *Game) CurPos() RawBoard

func (*Game) Eq 

func (g *Game) Eq(o *Game) bool

func (*Game) IsEmpty 

func (g *Game) IsEmpty() bool

func (*Game) IsFinished 

func (g *Game) IsFinished() bool

func (*Game) Len 

func (g *Game) Len() int

func (*Game) MoveAt 

func (g *Game) MoveAt(index int) Move

func (*Game) Outcome 

func (g *Game) Outcome() Outcome

func (*Game) Pop 

func (g *Game) Pop() (Move, bool)

func (*Game) PushLegalMove 

func (g *Game) PushLegalMove(mv Move)

func (*Game) PushMove 

func (g *Game) PushMove(mv Move) error

func (*Game) PushMoveSAN 

func (g *Game) PushMoveSAN(s string) error

func (*Game) PushMoveUCI 

func (g *Game) PushMoveUCI(s string) error

func (*Game) PushSemilegalMove 

func (g *Game) PushSemilegalMove(mv Move) bool

func (*Game) PushUCIList 

func (g *Game) PushUCIList(ucis string) (int, error)

func (*Game) PushUCIMove 

func (g *Game) PushUCIMove(um UCIMove) error

func (*Game) SetAutoOutcome 

func (g *Game) SetAutoOutcome(filter VerdictFilter) Outcome

func (*Game) SetOutcome 

func (g *Game) SetOutcome(o Outcome)

func (*Game) StartPos 

func (g *Game) StartPos() RawBoard

func (*Game) Styled 

func (g *Game) Styled(style GameStyle) (string, error)

func (*Game) StyledExt 

func (g *Game) StyledExt(style GameStyle, ga GameAnnotations) (string, error)

func (*Game) UCIList 

func (g *Game) UCIList() string

func (*Game) Walk 

func (g *Game) Walk() Walker

type GameAnnotations 

type GameAnnotations struct {
	Comments [][]string
}

type GameOutcomeStyle 

type GameOutcomeStyle uint8
const (
	GameOutcomeHide GameOutcomeStyle = iota
	GameOutcomeFinishedOnly
	GameOutcomeShow
)

type GameStyle 

type GameStyle struct {
	Move       MoveStyle
	MoveNumber MoveNumberStyle
	Outcome    GameOutcomeStyle
}

type MaybeCoord 

type MaybeCoord uint8
const NoCoord MaybeCoord = 255

func MaybeCoordFromString 

func MaybeCoordFromString(s string) (MaybeCoord, error)

func SomeCoord 

func SomeCoord(c Coord) MaybeCoord

func (MaybeCoord) ForceGet 

func (c MaybeCoord) ForceGet() Coord

func (MaybeCoord) IsNone 

func (c MaybeCoord) IsNone() bool

func (MaybeCoord) IsSome 

func (c MaybeCoord) IsSome() bool

func (MaybeCoord) IsValid 

func (c MaybeCoord) IsValid() bool

func (MaybeCoord) MarshalJSON added in v0.9.1 

func (c MaybeCoord) MarshalJSON() ([]byte, error)

func (MaybeCoord) String 

func (c MaybeCoord) String() string

func (MaybeCoord) TryGet 

func (c MaybeCoord) TryGet() (Coord, bool)

func (*MaybeCoord) UnmarshalJSON added in v0.9.1 

func (c *MaybeCoord) UnmarshalJSON(data []byte) error

type Move 

type Move struct {
	// contains filtered or unexported fields
}

func LegalMoveFromSAN 

func LegalMoveFromSAN(s string, b *Board) (Move, error)

func LegalMoveFromUCI 

func LegalMoveFromUCI(s string, b *Board) (Move, error)

func LegalMoveFromUCIMove 

func LegalMoveFromUCIMove(u UCIMove, b *Board) (Move, error)

func MoveFromCastling 

func MoveFromCastling(c Color, s CastlingSide) Move

func MoveFromUCI 

func MoveFromUCI(s string, b *Board) (Move, error)

func MoveFromUCIMove 

func MoveFromUCIMove(u UCIMove, b *Board) (Move, error)

func NewMove 

func NewMove(kind MoveKind, srcCell Cell, src, dst Coord) (Move, error)

func NewMoveUnchecked 

func NewMoveUnchecked(kind MoveKind, srcCell Cell, src, dst Coord) Move

func NullMove 

func NullMove() Move

func SemilegalMoveFromUCI 

func SemilegalMoveFromUCI(s string, b *Board) (Move, error)

func SemilegalMoveFromUCIMove 

func SemilegalMoveFromUCIMove(u UCIMove, b *Board) (Move, error)

func (Move) Dst 

func (m Move) Dst() Coord

func (Move) IsLegalWhenSemilegal 

func (m Move) IsLegalWhenSemilegal(b *Board) bool

func (Move) IsWellFormed 

func (m Move) IsWellFormed() bool

func (Move) Kind 

func (m Move) Kind() MoveKind

func (Move) SemiValidate 

func (m Move) SemiValidate(b *Board) error

func (Move) Src 

func (m Move) Src() Coord

func (Move) SrcCell 

func (m Move) SrcCell() Cell

func (Move) String 

func (m Move) String() string

func (Move) Styled 

func (m Move) Styled(b *Board, style MoveStyle) (string, error)

func (Move) UCI 

func (m Move) UCI() string

func (Move) UCIMove 

func (m Move) UCIMove() UCIMove

func (Move) Validate 

func (m Move) Validate(b *Board) error

type MoveGenPreset 

type MoveGenPreset uint8
const (
	MoveGenAll MoveGenPreset = iota
	MoveGenCapture
	MoveGenSimple
	MoveGenSimpleNoPromote
	MoveGenSimplePromote
	MoveGenPresetMax
)

type MoveKind 

type MoveKind uint8
const (
	MoveNull MoveKind = iota
	MoveSimple
	MoveCastlingQueenside
	MoveCastlingKingside
	MovePawnDouble
	MoveEnpassant
	MovePromoteKnight
	MovePromoteBishop
	MovePromoteRook
	MovePromoteQueen
	MoveKindMax
)

func MoveKindFromCastlingSide 

func MoveKindFromCastlingSide(s CastlingSide) MoveKind

func MoveKindFromPromote 

func MoveKindFromPromote(p Piece) (MoveKind, bool)

func (MoveKind) CastlingSide 

func (k MoveKind) CastlingSide() (CastlingSide, bool)

func (MoveKind) IsValid 

func (k MoveKind) IsValid() bool

func (MoveKind) MatchesPiece 

func (k MoveKind) MatchesPiece(p Piece) bool

func (MoveKind) Promote 

func (k MoveKind) Promote() (Piece, bool)

type MoveNumberStyle 

type MoveNumberStyle struct {
	Enabled         bool
	Custom          bool
	CustomStartFrom int
}

type MoveStyle 

type MoveStyle uint8
const (
	MoveStyleSAN MoveStyle = iota
	MoveStyleFancySAN
	MoveStyleUCI
)

type Outcome 

type Outcome struct {
	// contains filtered or unexported fields
}

func DrawOutcome 

func DrawOutcome(verdict Verdict) (Outcome, bool)

func MustDrawOutcome 

func MustDrawOutcome(verdict Verdict) Outcome

func MustWinOutcome 

func MustWinOutcome(verdict Verdict, side Color) Outcome

func NewOutcome 

func NewOutcome(verdict Verdict, side Color) Outcome

func RunningOutcome 

func RunningOutcome() Outcome

func WinOutcome 

func WinOutcome(verdict Verdict, side Color) (Outcome, bool)

func (Outcome) IsFinished 

func (o Outcome) IsFinished() bool

func (Outcome) Passes 

func (o Outcome) Passes(filter VerdictFilter) bool

func (Outcome) Side 

func (o Outcome) Side() (Color, bool)

func (Outcome) Status 

func (o Outcome) Status() Status

func (Outcome) String 

func (o Outcome) String() string

func (Outcome) Verdict 

func (o Outcome) Verdict() Verdict

type Piece 

type Piece uint8
const (
	PiecePawn Piece = iota
	PieceKing
	PieceKnight
	PieceBishop
	PieceRook
	PieceQueen
	PieceMax
)

func PieceFromByte 

func PieceFromByte(b byte) (Piece, error)

func PieceFromString 

func PieceFromString(s string) (Piece, error)

func (Piece) IsValid 

func (p Piece) IsValid() bool

func (Piece) String 

func (p Piece) String() string

func (Piece) ToByte 

func (p Piece) ToByte() byte

type PrettyStyle 

type PrettyStyle uint8
const (
	PrettyStyleASCII PrettyStyle = iota
	PrettyStyleFancy
)

type Rank 

type Rank uint8
const (
	Rank8 Rank = iota
	Rank7
	Rank6
	Rank5
	Rank4
	Rank3
	Rank2
	Rank1
	RankMax
)

func RankFromByte 

func RankFromByte(b byte) (Rank, error)

func (Rank) IsValid 

func (r Rank) IsValid() bool

func (Rank) String 

func (r Rank) String() string

func (Rank) ToByte 

func (r Rank) ToByte() byte

type RawBoard 

type RawBoard struct {
	Cells       [CoordMax]Cell
	Side        Color
	Castling    CastlingRights
	EpSource    MaybeCoord
	MoveCounter uint8
	MoveNumber  uint32
}

func InitialRawBoard 

func InitialRawBoard() RawBoard

func RawBoardFromFEN 

func RawBoardFromFEN(fen string) (RawBoard, error)

func (*RawBoard) EpDest 

func (b *RawBoard) EpDest() MaybeCoord

func (RawBoard) FEN 

func (b RawBoard) FEN() string

func (*RawBoard) Get 

func (b *RawBoard) Get(c Coord) Cell

func (*RawBoard) Get2 

func (b *RawBoard) Get2(f File, r Rank) Cell

func (RawBoard) MarshalJSON added in v0.9.1 

func (b RawBoard) MarshalJSON() ([]byte, error)

func (*RawBoard) Pretty 

func (b *RawBoard) Pretty(style PrettyStyle) string

func (*RawBoard) Put 

func (b *RawBoard) Put(c Coord, ce Cell)

func (*RawBoard) Put2 

func (b *RawBoard) Put2(f File, r Rank, ce Cell)

func (RawBoard) String 

func (b RawBoard) String() string

func (*RawBoard) UnmarshalJSON added in v0.9.1 

func (b *RawBoard) UnmarshalJSON(data []byte) error

func (*RawBoard) ZHash 

func (b *RawBoard) ZHash() ZHash

type RepeatTable 

type RepeatTable struct {
	// contains filtered or unexported fields
}

func NewRepeatTable 

func NewRepeatTable() *RepeatTable

func (*RepeatTable) Clone 

func (r *RepeatTable) Clone() *RepeatTable

func (*RepeatTable) Count 

func (r *RepeatTable) Count(b *Board) int

func (*RepeatTable) Pop 

func (r *RepeatTable) Pop(b *Board)

func (*RepeatTable) Push 

func (r *RepeatTable) Push(b *Board)

type Status 

type Status uint8
const (
	StatusRunning Status = iota
	StatusDraw
	StatusWhiteWins
	StatusBlackWins
)

func StatusFromString added in v0.9.1 

func StatusFromString(s string) (Status, error)

func StatusWin 

func StatusWin(c Color) Status

func (Status) IsFinished 

func (s Status) IsFinished() bool

func (Status) MarshalJSON added in v0.9.1 

func (s Status) MarshalJSON() ([]byte, error)

func (Status) String 

func (s Status) String() string

func (*Status) UnmarshalJSON added in v0.9.1 

func (s *Status) UnmarshalJSON(data []byte) error

func (Status) Winner 

func (s Status) Winner() (Color, bool)

type UCIMove 

type UCIMove struct {
	// contains filtered or unexported fields
}

func NullUCIMove 

func NullUCIMove() UCIMove

func PromoteUCIMove 

func PromoteUCIMove(src, dst Coord, promote Piece) UCIMove

func SimpleUCIMove 

func SimpleUCIMove(src, dst Coord) UCIMove

func UCIMoveFromString 

func UCIMoveFromString(s string) (UCIMove, error)

func (UCIMove) Dst 

func (m UCIMove) Dst() Coord

func (UCIMove) Kind 

func (m UCIMove) Kind() UCIMoveKind

func (UCIMove) MarshalJSON added in v0.9.1 

func (m UCIMove) MarshalJSON() ([]byte, error)

func (UCIMove) Promote 

func (m UCIMove) Promote() (Piece, bool)

func (UCIMove) Src 

func (m UCIMove) Src() Coord

func (UCIMove) String 

func (m UCIMove) String() string

func (UCIMove) ToMove 

func (m UCIMove) ToMove(b *Board) (Move, error)

func (*UCIMove) UnmarshalJSON added in v0.9.1 

func (m *UCIMove) UnmarshalJSON(data []byte) error

type UCIMoveKind 

type UCIMoveKind uint8
const (
	UCIMoveNull UCIMoveKind = iota
	UCIMoveSimple
	UCIMovePromote
	UCIMoveKindMax
)

func (UCIMoveKind) IsValid 

func (k UCIMoveKind) IsValid() bool

type Undo 

type Undo struct {
	// contains filtered or unexported fields
}

func (Undo) Move 

func (u Undo) Move() Move

type Verdict 

type Verdict uint8
const (
	// Running game verdicts
	VerdictRunning Verdict = 0

	// Draw game verdicts
	VerdictDrawUnknown          Verdict = 32
	VerdictStalemate            Verdict = 33
	VerdictInsufficientMaterial Verdict = 34
	VerdictMoves75              Verdict = 35
	VerdictRepeat5              Verdict = 36
	VerdictMoves50              Verdict = 37
	VerdictRepeat3              Verdict = 38
	VerdictDrawAgreement        Verdict = 39

	// Win game verdicts
	VerdictWinUnknown      Verdict = 64
	VerdictCheckmate       Verdict = 65
	VerdictTimeForfeit     Verdict = 66
	VerdictInvalidMove     Verdict = 67
	VerdictEngineError     Verdict = 68
	VerdictResign          Verdict = 69
	VerdictOpponentAbandon Verdict = 70
)

func (Verdict) IsFinished 

func (v Verdict) IsFinished() bool

func (Verdict) Kind 

func (v Verdict) Kind() VerdictKind

func (Verdict) Passes 

func (v Verdict) Passes(filter VerdictFilter) bool

func (Verdict) String 

func (v Verdict) String() string

type VerdictFilter 

type VerdictFilter uint8
const (
	VerdictFilterForce VerdictFilter = iota
	VerdictFilterStrict
	VerdictFilterRelaxed
)

type VerdictKind 

type VerdictKind uint8
const (
	VerdictKindRunning VerdictKind = 0
	VerdictKindDraw    VerdictKind = 1
	VerdictKindWin     VerdictKind = 2
)

type Walker 

type Walker struct {
	// contains filtered or unexported fields
}

func (*Walker) Board 

func (w *Walker) Board() *Board

The board updates automatically after call to Next(), Prev(), First(), Last() or Jump().

Do not mutate the returned board.

func (*Walker) First 

func (w *Walker) First()

func (*Walker) IsEmpty 

func (w *Walker) IsEmpty() bool

func (*Walker) Jump 

func (w *Walker) Jump(pos int) bool

func (*Walker) Last 

func (w *Walker) Last()

func (*Walker) Len 

func (w *Walker) Len() int

func (*Walker) Next 

func (w *Walker) Next() bool

func (*Walker) Pos 

func (w *Walker) Pos() int

func (*Walker) Prev 

func (w *Walker) Prev() bool

type ZHash 

type ZHash [1]uint64

func (ZHash) Xor 

func (z ZHash) Xor(o ZHash) ZHash

func (*ZHash) XorEq 

func (z *ZHash) XorEq(o ZHash)

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