Struct pleco::board::Board

pub struct Board { /* fields omitted */ }

Represents a Chessboard through a Board.

Board contains everything that needs to be known about the current state of the Game. It is used by both Engines and Players / Bots alike.

Ideally, the Engine contains the original Representation of a board (owns the board), and utilizes Board::shallow_clone() to share this representaion with Players.

Examples

use pleco::Board;

fn main() {
    let mut chessboard = Board::default();

    let moves = chessboard.generate_moves();
    chessboard.apply_move(moves[0]);

    let b2 = chessboard.shallow_clone(); // boards allow for easy cloning
    assert_eq!(chessboard.moves_played(), b2.moves_played());
}

BitBoard Representation

For the majority of the struct, the board utilizes BitBoards, which is a u64 where each bit represents an occupied location, and each bit index represents a certain square (as in bit 0 is Square A1, bit 1 is B1, etc.). Indexes increase first horizontally by File, and then by Rank. See BitBoards article ChessWiki for more information.

The exact mapping from each square to bits is as follows:

8 | 56 57 58 59 60 61 62 63
7 | 48 49 50 51 52 53 54 55
6 | 40 41 42 43 44 45 46 47
5 | 32 33 34 35 36 37 38 39
4 | 24 25 26 27 28 29 30 31
3 | 16 17 18 19 20 21 22 23
2 | 8  9  10 11 12 13 14 15
1 | 0  1  2  3  4  5  6  7
  -------------------------
     a  b  c  d  e  f  g  h

Methods

impl Board

pub fn start_pos() -> Board

Constructs a board from the starting position

Examples

use pleco::{Board,Player};

let chessboard = Board::start_pos();
assert_eq!(chessboard.count_pieces_player(Player::White),16);

pub fn shallow_clone(&self) -> Board

Constructs a shallow clone of the Board.

Contains only the information necessary to apply future moves, more specifically does not clone the moves list, and sets depth to zero. Intended for an Engine or main thread to share the board to users wanting to search.

Safety

After this method has called, Board::undo_move() cannot be called immediately after. Undoing moves can only be done once a move has been played, and cannot be called more times than moves have been played since calling Board::shallow_clone().

Examples

use pleco::Board;

let mut chessboard = Board::start_pos();
let moves = chessboard.generate_moves(); // generate all possible legal moves
chessboard.apply_move(moves[0]); // apply first move

assert_eq!(chessboard.moves_played(), 1);

let board_clone = chessboard.shallow_clone();
assert_eq!(chessboard.moves_played(), board_clone.moves_played());

assert_ne!(chessboard.depth(),board_clone.depth()); // different depths

pub fn parallel_clone(&self) -> Board

Constructs a parallel clone of the Board.

Similar to Board::shallow_clone(), but keeps the current search depth the same. Should be used when implementing a searcher, and want to search a list of moves in parallel with different threads.

Safety

After this method has called, Board::undo_move() cannot be called immediately after. Undoing moves can only be done once a move has been played, and cannot be called more times than moves have been played since calling Board::parallel_clone().

Examples

use pleco::Board;

let mut chessboard = Board::start_pos();
let moves = chessboard.generate_moves(); // generate all possible legal moves
chessboard.apply_move(moves[0]);
assert_eq!(chessboard.moves_played(), 1);

let board_clone = chessboard.parallel_clone();
assert_eq!(chessboard.moves_played(), board_clone.moves_played());

assert_eq!(chessboard.depth(),board_clone.depth()); // different depths

pub fn random() -> RandBoard

Creates a RandBoard (Random Board Generator) for generation of Boards with random positions. See the RandBoard structure for more information.

Examples

Create one Board with at least 5 moves played that is created in a pseudo-random fashion.

use pleco::Board;
let rand_boards: Board = Board::random()
    .pseudo_random(6622225)
    .min_moves(5)
    .one();

Create a Vec of 3 random Boards that are guaranteed to not be in check.

use pleco::board::{Board,RandBoard};

let rand_boards: Vec<Board> = Board::random()
    .no_check()
    .many(3);

pub fn from_fen(fen: &str) -> Result<Board, FenBuildError>

Constructs a board from a FEN String.

FEN stands for Forsyth-Edwards Notation, and is a way of representing a board through a string of characters. More information can be found on the ChessWiki.

Examples

use pleco::Board;

let board = Board::from_fen("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1").unwrap();
assert_eq!(board.count_all_pieces(),32);


let obviously_not_a_fen = "This shouldn't parse!";
let bad_board = Board::from_fen(obviously_not_a_fen);
assert!(bad_board.is_err());

Safety

The FEN string must be valid, or else the method will return an Error.

There is a possibility of the FEN string representing an unvalid position, with no panics resulting. The Constructed Board may have some Undefined Behavior as a result. It is up to the user to give a valid FEN string.

pub fn fen(&self) -> String

Creates a FEN String of the Given Board.

FEN stands for Forsyth-Edwards Notation, and is a way of representing a board through a string of characters. More information can be found on the ChessWiki.

Examples

use pleco::Board;

let board = Board::start_pos();
assert_eq!(board.fen(),"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1");

pub fn apply_move(&mut self, bit_move: BitMove)

Applies a move to the Board.

Safety

The passed in BitMove must be a legal move for the current position.

Panics

The supplied BitMove must be both a valid move for that position, as well as a valid BitMove, Otherwise, a panic will occur. Valid BitMoves can be generated with Board::generate_moves(), which guarantees that only Legal moves will be created.

pub fn apply_move_pft_chk<PT, MT>(     &mut self,     bit_move: BitMove,     gives_check: bool,     pawn_table: &PT,     material_table: &MT ) where     PT: PreFetchable,     MT: PreFetchable,

Applies a move to the Board. This method is only useful if before a move is applied to a board, the ability of the move to give check is applied. If it is not needed to know if the move gives check or not, consider using Board::apply_move instead.

This method also takes in two generic parameters implementing PreFetchable, one of which will prefetch from the A table taking in a pawn key, the other of which pre-fetching from a table utilizing the material key.

Safety

The passed in BitMove must be a legal move for the current position, and the gives_check parameter must be correct for the move.

Panics

The supplied BitMove must be both a valid move for that position, as well as a valid BitMove, Otherwise, a panic will occur. Valid BitMoves can be generated with Board::generate_moves(), which guarantees that only Legal moves will be created.

The second parameter, gives_check, must be true if the move gives check, or false if the move doesn't give check. If an incorrect gives_check is supplied, undefined behavior will follow.

pub fn apply_uci_move(&mut self, uci_move: &str) -> bool

Applies a UCI move to the board. If the move is a valid string representing a UCI move, then true will be returned & the move will be applied. Otherwise, false is returned and the board isn't changed.

Examples

use pleco::Board;

let mut board = Board::start_pos();
let success = board.apply_uci_move("e2e4");

assert!(success);

pub fn undo_move(&mut self)

Un-does the previously applied move, allowing the Board to return to it's most recently held state.

Panics

Cannot be done if after any Board::shallow_clone() has been applied, or if Board::parallel_clone() has been done and there is no previous move.

Examples

use pleco::Board;

let mut chessboard = Board::start_pos();

let moves = chessboard.generate_moves();
chessboard.apply_move(moves[0]);

let mut board_clone = chessboard.shallow_clone();

chessboard.undo_move(); // works, chessboard existed before the move was played
board_clone.undo_move(); // error: board_clone was created after the move was applied

pub unsafe fn apply_null_move(&mut self)

Apply a "Null Move" to the board, essentially swapping the current turn of the board without moving any pieces.

Safety

This method should only be used for special evaluation purposes, as it does not give an accurate or legal state of the chess board.

Unsafe as it allows for Null Moves to be applied in states of check, which is never a valid state of a chess game.

Panics

Panics if the Board is currently in check.

Examples

use pleco::board::*;

let mut chessboard = Board::start_pos();
let board_clone = chessboard.shallow_clone();

unsafe { chessboard.apply_null_move(); }

assert_ne!(chessboard.depth(), board_clone.depth());

pub unsafe fn undo_null_move(&mut self)

Undo a "Null Move" to the Board, returning to the previous state.

Safety

This method should only be used if it can be guaranteed that the last played move from the current state is a Null-Move, eg Board::apply_null_move(). Otherwise, a panic will occur.

Examples

use pleco::board::*;

let mut chessboard = Board::start_pos();
let board_clone = chessboard.shallow_clone();

unsafe { chessboard.apply_null_move(); }

assert_ne!(chessboard.ply(), board_clone.ply());

unsafe { chessboard.undo_null_move(); }

assert_eq!(chessboard.moves_played(), board_clone.moves_played());
assert_eq!(chessboard.fen(), board_clone.fen());

pub fn generate_moves(&self) -> MoveList

Get a List of legal BitMoves for the player whose turn it is to move.

This method already takes into account if the Board is currently in check, and will return legal moves only.

Examples

use pleco::Board;

let chessboard = Board::start_pos();
let moves = chessboard.generate_moves();

println!("There are {} possible legal moves.", moves.len());

pub fn generate_scoring_moves(&self) -> ScoringMoveList

Get a List of legal BitMoves (alongside a score) for the player whose turn it is to move.

This method already takes into account if the Board is currently in check, and will return legal moves only. The ScoringMoveList that is returned will have a value of zero for each move.

pub fn generate_pseudolegal_moves(&self) -> MoveList

Get a List of all PseudoLegal BitMoves for the player whose turn it is to move. Works exactly the same as Board::generate_moves(), but doesn't guarantee that all the moves are legal for the current position. Moves need to be checked with a Board::legal_move(move) in order to be certain of a legal move.

pub fn generate_moves_of_type(&self, gen_type: GenTypes) -> MoveList

Get a List of legal BitMoves for the player whose turn it is to move and of a certain type.

This method already takes into account if the Board is currently in check, and will return legal moves only. If a non-ALL GenTypes is supplied, only a subset of the total moves will be given.

Panics

Panics if given GenTypes::QuietChecks while the current board is in check

Examples

use pleco::board::*;
use pleco::core::GenTypes;

let chessboard = Board::start_pos();
let capturing_moves = chessboard.generate_moves_of_type(GenTypes::Captures);

assert_eq!(capturing_moves.len(), 0); // no possible captures for the starting position

pub fn generate_pseudolegal_moves_of_type(&self, gen_type: GenTypes) -> MoveList

Get a List of all PseudoLegal BitMoves for the player whose turn it is to move. Works exactly the same as Board::generate_moves(), but doesn't guarantee that all the moves are legal for the current position. Moves need to be checked with a Board::legal_move(move) in order to be certain of a legal move.

This method already takes into account if the Board is currently in check. If a non-ALL GenType is supplied, only a subset of the total moves will be given.

Panics

Panics if given GenTypes::QuietChecks while the current board is in check

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn slider_blockers(     &self,     sliders: BitBoard,     s: SQ,     pinners: &mut BitBoard ) -> BitBoard

Outputs the Blockers of a given square.

pub fn turn(&self) -> Player

Get the Player whose turn it is to move.

Examples

use pleco::{Board,Player};

let chessboard = Board::start_pos();
assert_eq!(chessboard.turn(), Player::White);

pub fn zobrist(&self) -> u64

Return the Zobrist Hash of the board.

pub fn pawn_key(&self) -> u64

Return the pawn key of the board.

This is a semi-unique key for any configuration of pawns on the board.

pub fn moves_played(&self) -> u16

Get the total number of moves played.

Examples

use pleco::Board;

let mut chessboard = Board::start_pos();
assert_eq!(chessboard.moves_played(), 0);

let moves = chessboard.generate_moves();
chessboard.apply_move(moves[0]);
assert_eq!(chessboard.moves_played(), 1);

pub fn depth(&self) -> u16

Get the current depth (half moves from a Board::shallow_clone().

pub fn rule_50(&self) -> i16

Get the number of half-moves since a Pawn Push, castle, or capture.

pub fn piece_captured_last_turn(&self) -> PieceType

Return the Piece, if any, that was last captured.

pub fn ply(&self) -> u16

Get the current ply of the board.

A ply is determined as the number of moves that have been played on the current Board. A simpler way to explain it would be counting the number of times Board::undo_move() can be legally applied.

pub fn psq(&self) -> Score

Returns the current positional Score of the board. Positive scores are in favor of the white player, while negative scores are in favor of the black player.

pub fn ep_square(&self) -> SQ

Get the current square of en-passant. This is defined not as the pawn that could be captured from an en-passant move, but rather the square directly behind it.

Safety

While it returns a SQ, this square could be SQ::NONE, meaning there is no actual en-passant square.

Examples

use pleco::{Board,SQ};

let chessboard = Board::start_pos();
assert_eq!(chessboard.ep_square(), SQ::NONE);

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn occupied(&self) -> BitBoard

Gets the BitBoard of all pieces.

Examples

use pleco::{Board,BitBoard};

let chessboard = Board::start_pos();
assert_eq!(chessboard.occupied().0, 0xFFFF00000000FFFF);

pub fn empty(&self, sq: SQ) -> bool

Returns a if a SQ is empty on the current Board.

Examples

use pleco::{Board,SQ};

let chessboard = Board::start_pos();
assert!(chessboard.empty(SQ::F6));
assert!(!chessboard.empty(SQ::A2));

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn get_occupied_player(&self, player: Player) -> BitBoard

Get the BitBoard of the squares occupied by the given player.

Examples

use pleco::{Board,Player,BitBoard};

let chessboard = Board::start_pos();
assert_eq!(chessboard.get_occupied_player(Player::White).0, 0x000000000000FFFF);

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn occupied_white(&self) -> BitBoard

Returns a Bitboard consisting of only the squares occupied by the White Player.

Examples

use pleco::{Board,BitBoard};

let chessboard = Board::start_pos();
assert_eq!(chessboard.occupied_white(), BitBoard::RANK_1 | BitBoard::RANK_2);

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn occupied_black(&self) -> BitBoard

Returns a BitBoard consisting of only the squares occupied by the Black Player.

Examples

use pleco::{Board,BitBoard};

let chessboard = Board::start_pos();
assert_eq!(chessboard.occupied_black(), BitBoard::RANK_8 | BitBoard::RANK_7);

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn piece_bb(&self, player: Player, piece: PieceType) -> BitBoard

Returns BitBoard of a single player and that one type of piece.

Examples

use pleco::Board;
use pleco::{Player,PieceType};

let chessboard = Board::start_pos();
assert_eq!(chessboard.piece_bb(Player::White,PieceType::P).0, 0x000000000000FF00);

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn sliding_piece_bb(&self, player: Player) -> BitBoard

Returns the BitBoard of the Queens and Rooks of a given player.

Examples

use pleco::{Board,Player,BitBoard};
use pleco::core::bit_twiddles::*;

let chessboard = Board::start_pos();
assert_eq!(chessboard.sliding_piece_bb(Player::White).count_bits(), 3);

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn diagonal_piece_bb(&self, player: Player) -> BitBoard

Returns the BitBoard of the Queens and Bishops of a given player.

Examples

use pleco::{Board,Player,BitBoard};
use pleco::core::bit_twiddles::*;

let chessboard = Board::start_pos();
assert_eq!(chessboard.diagonal_piece_bb(Player::White).count_bits(), 3);

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn piece_bb_both_players(&self, piece: PieceType) -> BitBoard

Returns the combined BitBoard of both players for a given piece.

Examples

use pleco::{Board,PieceType};

let chessboard = Board::start_pos();
assert_eq!(chessboard.piece_bb_both_players(PieceType::P).0, 0x00FF00000000FF00);

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn piece_two_bb_both_players(     &self,     piece: PieceType,     piece2: PieceType ) -> BitBoard

Returns the combined BitBoard of both players for two pieces.

Examples

use pleco::{Board,PieceType,BitBoard};
use pleco::core::bit_twiddles::*;

let chessboard = Board::start_pos();
assert_eq!(chessboard.piece_two_bb_both_players(PieceType::Q,PieceType::K).count_bits(), 4);

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn piece_two_bb(     &self,     piece: PieceType,     piece2: PieceType,     player: Player ) -> BitBoard

Returns the BitBoard containing the locations of two given types of pieces for the given player.

pub fn count_piece(&self, player: Player, piece: PieceType) -> u8

Get the total number of pieces of the given piece and player.

Examples

use pleco::{Board,Player,PieceType};

let chessboard = Board::start_pos();
assert_eq!(chessboard.count_piece(Player::White, PieceType::P), 8);

pub fn count_pieces_player(&self, player: Player) -> u8

Get the total number of pieces a given player has.

Examples

use pleco::{Board,Player,PieceType};
use pleco::core::bit_twiddles::*;

let chessboard = Board::start_pos();
assert_eq!(chessboard.count_pieces_player(Player::White), 16);

pub fn count_all_pieces(&self) -> u8

Get the total number of pieces on the board.

Examples

use pleco::{Board,Player,PieceType};
use pleco::core::bit_twiddles::*;

let chessboard = Board::start_pos();
assert_eq!(chessboard.count_all_pieces(), 32);

pub fn piece_at_sq(&self, sq: SQ) -> Piece

Returns the PieceType, if any, at the square.

Panics

Panics if the square is not a legal square.

pub fn king_sq(&self, player: Player) -> SQ

Returns the square of the King for a given player.

Examples

use pleco::{Board,Player,SQ};

let board = Board::start_pos();
assert_eq!(board.king_sq(Player::White), SQ::E1);

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn pinned_pieces(&self, player: Player) -> BitBoard

Returns the pinned pieces of the given player.

Pinned is defined as pinned to the same players king

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn all_pinned_pieces(&self, player: Player) -> BitBoard

Returns the pinned pieces for a given players king. Can contain piece of from both players, but all are guaranteed to be pinned to the given player's king.

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn pinning_pieces(&self, player: Player) -> BitBoard

Returns the pinning pieces of a given player.

E.g., pieces that are pinning a piece to the opponent's king. This will return the pinned pieces of both players, pinned to the given player's king.

pub fn castling_bits(&self) -> u8

Returns the raw castling rights bits of the board.

pub fn can_castle(&self, player: Player, castle_type: CastleType) -> bool

Return if a player has the possibility of castling for a given CastleType. This does not ensure a castling is possible for the player, just that the player has the castling-right available.

pub fn player_can_castle(&self, player: Player) -> Castling

Returns the Castling structure of a player, which marks whether or not a player has the rights to castle.

pub fn castle_impeded(&self, castle_type: CastleType) -> bool

Check if the castle path is impeded for the current player. Does not assume that the current player has the ability to castle, whether by having the castling-rights to, or having the rook and king be in the correct square.

pub fn castling_rook_square(&self, castle_type: CastleType) -> SQ

Square of the Rook that is involved with the current player's castle.

pub fn last_move(&self) -> Option<BitMove>

Return the last move played, if any.

pub fn piece_last_captured(&self) -> PieceType

Returns if the piece (if any) that was captured last move. This method does not distinguish between not having any last move played and not having a piece last captured.

pub fn material_key(&self) -> u64

Returns the material key of the board.

pub fn non_pawn_material(&self, player: Player) -> Value

Returns the current non-pawn material value of a player.

pub fn non_pawn_material_all(&self) -> Value

Returns the current non-pawn material value for both players.

pub fn in_check(&self) -> bool

Returns if current side to move is in check.

pub fn checkmate(&self) -> bool

Return if the current side to move is in check mate.

This method can be computationally expensive, do not use outside of Engines.

pub fn stalemate(&self) -> bool

Returns if the current side to move is in stalemate.

This method can be computationally expensive, do not use outside of Engines.

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn checkers(&self) -> BitBoard

Return the BitBoard of all checks on the current player's king. If the current side to move is not in check, the BitBoard will be empty.

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn discovered_check_candidates(&self) -> BitBoard

Returns the BitBoard of pieces the current side can move to discover check. Discovered check candidates are pieces for the current side to move, that are currently blocking a check from another piece of the same color.

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn pieces_pinned(&self, player: Player) -> BitBoard

Gets the Pinned pieces for the given player. A pinned piece is defined as a piece that if suddenly removed, the player would find itself in check.

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn attackers_to(&self, sq: SQ, occupied: BitBoard) -> BitBoard

Returns a BitBoard of possible attacks / defends to a square with a given occupancy. Includes pieces from both players.

Important traits for BitBoard

impl Iterator for BitBoard type Item = SQ;

pub fn attacks_from(&self, piece: PieceType, sq: SQ, player: Player) -> BitBoard

Given a piece, square, and player, returns all squares the piece may possibly move to.

pub fn pawn_passed(&self, player: Player, sq: SQ) -> bool

Returns if a pawn on a given square is passed.

pub fn legal_move(&self, m: BitMove) -> bool

Tests if a given pseudo-legal move is a legal. This is mostly for checking the legality of moves that were generated in a pseudo-legal fashion. Generating moves like this is faster, but doesn't guarantee legality due to the possibility of a discovered check happening.

Safety

Assumes the move is legal for the current board.

pub fn pseudo_legal_move(&self, m: BitMove) -> bool

Rakes a random move and tests whether the move is pseudo-legal. Used to validate moves from the Transposition Table.

Safety

Using this method does not guarantee that a move is legal. It only guarantee's that a move may possibly legal. To guarantee a move is completely legal for the position, use Board::pseudo_legal_move() followed by a Board::legal_move().

pub fn opposite_bishops(&self) -> bool

Returns if the board contains only two bishops, one for each color, and each being on different squares.

pub fn advanced_pawn_push(&self, mov: BitMove) -> bool

Checks if a move is an advanced pawn push, meaning it passes into enemy territory.

pub fn is_capture(&self, mov: BitMove) -> bool

Returns if a move is a capture.

This is similar to BitMove::is_capture, but instead comapres the move to the Boards data, rather than relying on the information encoded in the move.

pub fn is_capture_or_promotion(&self, mov: BitMove) -> bool

Returns if a move is a capture.

This is similar to BitMove::is_capture & BitMove::is_promo, but instead comapres the move to the Boards data, rather than relying on the information encoded in the move.

pub fn gives_check(&self, m: BitMove) -> bool

Returns if a move gives check to the opposing player's King.

Safety

Assumes the move is legal for the current board.

pub fn see_ge(&self, mov: BitMove, threshold: i32) -> bool

see_ge stands for Static Exchange Evaluation, Greater or Equal. This teats if the Static Exchange Evaluation of a move is greater than or equal to a value.

pub fn moved_piece(&self, m: BitMove) -> Piece

Returns the piece that was moved from a given BitMove.

Simply put, this method will return the Piece at a move's from square.

Safety

Assumes the move is legal for the current board.

pub fn captured_piece(&self, m: BitMove) -> PieceType

Returns the piece that was captured, if any from a given BitMove.

If the move is not a capture, PieceType::None will be returned.

Safety

Assumes the move is legal for the current board.

pub fn key_after(&self, m: BitMove) -> u64

Returns the Zobrist key after a move is played. Doesn't recognize special moves like castling, en-passant, and promotion.

Safety

Panics if the move is not legal for the current board.

pub fn pretty_string(&self) -> String

Returns a prettified String of the current Board, for easy command line displaying.

Capital Letters represent white pieces, while lower case represents black pieces.

pub fn get_piece_locations(&self) -> PieceLocations

Returns a clone of the current PieceLocations.

pub fn print_debug_info(&self)

Get Debug Information.

pub fn pretty_print(&self)

Prints a prettified representation of the board.

pub fn fancy_print(&self)

Print the board alongside useful information.

Mostly for Debugging useage.

impl Board

pub fn is_ok_quick(&self) -> bool

Checks the basic status of the board, returning false if something is wrong.

pub fn is_okay(&self) -> Result<(), BoardError>

Checks if the current state of the Board is okay.

Trait Implementations

impl Display for Board

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Debug for Board

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl PartialEq for Board

fn eq(&self, other: &Board) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Clone for Board

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for Board

fn default() -> Self

Returns the "default value" for a type.