Tablebase_8h_source.html

#pragma once


#include "../Types.h"

#include <string>

#include <optional>


namespace Tablebase {


enum class WDL {

    WIN = 2,

    CURSED_WIN = 1,

    DRAW = 0,

    BLESSED_LOSS = -1,

    LOSS = -2

};


bool init(const std::string& path);


bool available(const Board& board);


std::optional<WDL> probeWDL(const Board& board);


std::optional<std::tuple<Move, WDL, int>> probeRoot(const Board& board);


int wdlToScore(WDL wdl, int mate_ply);


int maxPieces();


bool isInitialized();


} // namespace Tablebase

Types.h
Common type definitions and constants for the chess engine.

Board
chess::Board Board
Alias for chess::Board.
Definition Types.h:14

Tablebase
Definition Tablebase.cpp:13

Tablebase::maxPieces
int maxPieces()
Gets the maximum number of pieces supported by the loaded tablebases.
Definition Tablebase.cpp:232

Tablebase::available
bool available(const Board &board)
Checks if a position is within the tablebase piece limits.
Definition Tablebase.cpp:42

Tablebase::probeRoot
std::optional< std::tuple< Move, WDL, int > > probeRoot(const Board &board)
Probes the Distance-to-Zero (DTZ) table for root moves.
Definition Tablebase.cpp:99

Tablebase::wdlToScore
int wdlToScore(WDL wdl, int mate_ply)
Converts a WDL result to a centipawn score for search evaluation.
Definition Tablebase.cpp:209

Tablebase::WDL
WDL
Tablebase probe result for Win-Draw-Loss.
Definition Tablebase.h:21

Tablebase::WDL::DRAW
@ DRAW
Forced draw.
Definition Tablebase.h:24

Tablebase::WDL::CURSED_WIN
@ CURSED_WIN
Win, but thwarted by the 50-move rule (draw).
Definition Tablebase.h:23

Tablebase::WDL::WIN
@ WIN
Forced win.
Definition Tablebase.h:22

Tablebase::WDL::BLESSED_LOSS
@ BLESSED_LOSS
Loss, but saved by the 50-move rule (draw).
Definition Tablebase.h:25

Tablebase::WDL::LOSS
@ LOSS
Forced loss.
Definition Tablebase.h:26

Tablebase::init
bool init(const std::string &path)
Initializes tablebases with the given path.
Definition Tablebase.cpp:18

Tablebase::isInitialized
bool isInitialized()
Checks if tablebases have been successfully initialized.
Definition Tablebase.cpp:234

Tablebase::probeWDL
std::optional< WDL > probeWDL(const Board &board)
Probes the Win-Draw-Loss (WDL) table.
Definition Tablebase.cpp:50