/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2020 The Stockfish developers (see AUTHORS file)
+ Copyright (C) 2004-2024 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#ifndef TBPROBE_H
#define TBPROBE_H
-#include <ostream>
+#include <string>
+#include <vector>
-#include "../search.h"
-namespace Tablebases {
+namespace Stockfish {
+class Position;
+class OptionsMap;
-enum WDLScore {
- WDLLoss = -2, // Loss
- WDLBlessedLoss = -1, // Loss, but draw under 50-move rule
- WDLDraw = 0, // Draw
- WDLCursedWin = 1, // Win, but draw under 50-move rule
- WDLWin = 2, // Win
+using Depth = int;
+
+namespace Search {
+struct RootMove;
+using RootMoves = std::vector<RootMove>;
+}
+}
+
+namespace Stockfish::Tablebases {
- WDLScoreNone = -1000
+struct Config {
+ int cardinality = 0;
+ bool rootInTB = false;
+ bool useRule50 = false;
+ Depth probeDepth = 0;
+};
+
+enum WDLScore {
+ WDLLoss = -2, // Loss
+ WDLBlessedLoss = -1, // Loss, but draw under 50-move rule
+ WDLDraw = 0, // Draw
+ WDLCursedWin = 1, // Win, but draw under 50-move rule
+ WDLWin = 2, // Win
};
// Possible states after a probing operation
enum ProbeState {
- FAIL = 0, // Probe failed (missing file table)
- OK = 1, // Probe succesful
- CHANGE_STM = -1, // DTZ should check the other side
- ZEROING_BEST_MOVE = 2 // Best move zeroes DTZ (capture or pawn move)
+ FAIL = 0, // Probe failed (missing file table)
+ OK = 1, // Probe successful
+ CHANGE_STM = -1, // DTZ should check the other side
+ ZEROING_BEST_MOVE = 2 // Best move zeroes DTZ (capture or pawn move)
};
extern int MaxCardinality;
-void init(const std::string& paths);
-WDLScore probe_wdl(Position& pos, ProbeState* result);
-int probe_dtz(Position& pos, ProbeState* result);
-bool root_probe(Position& pos, Search::RootMoves& rootMoves);
-bool root_probe_wdl(Position& pos, Search::RootMoves& rootMoves);
-void rank_root_moves(Position& pos, Search::RootMoves& rootMoves);
-
-inline std::ostream& operator<<(std::ostream& os, const WDLScore v) {
- os << (v == WDLLoss ? "Loss" :
- v == WDLBlessedLoss ? "Blessed loss" :
- v == WDLDraw ? "Draw" :
- v == WDLCursedWin ? "Cursed win" :
- v == WDLWin ? "Win" : "None");
-
- return os;
-}
-
-inline std::ostream& operator<<(std::ostream& os, const ProbeState v) {
-
- os << (v == FAIL ? "Failed" :
- v == OK ? "Success" :
- v == CHANGE_STM ? "Probed opponent side" :
- v == ZEROING_BEST_MOVE ? "Best move zeroes DTZ" : "None");
-
- return os;
-}
-
-}
+void init(const std::string& paths);
+WDLScore probe_wdl(Position& pos, ProbeState* result);
+int probe_dtz(Position& pos, ProbeState* result);
+bool root_probe(Position& pos, Search::RootMoves& rootMoves, bool rule50, bool rankDTZ);
+bool root_probe_wdl(Position& pos, Search::RootMoves& rootMoves, bool rule50);
+Config rank_root_moves(const OptionsMap& options,
+ Position& pos,
+ Search::RootMoves& rootMoves,
+ bool rankDTZ = false);
+
+} // namespace Stockfish::Tablebases
#endif