2 Stockfish, a UCI chess playing engine derived from Glaurung 2.1
3 Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
4 Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
6 Stockfish is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 Stockfish is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #if !defined MOVEPICK_H_INCLUDED
21 #define MOVEPICK_H_INCLUDED
30 /// MovePicker is a class which is used to pick one pseudo legal move at a time
31 /// from the current position. It is initialized with a Position object and a few
32 /// moves we have reason to believe are good. The most important method is
33 /// MovePicker::get_next_move(), which returns a new pseudo legal move each time
34 /// it is called, until there are no moves left, when MOVE_NONE is returned.
35 /// In order to improve the efficiency of the alpha beta algorithm, MovePicker
36 /// attempts to return the moves which are most likely to get a cut-off first.
40 MovePicker& operator=(const MovePicker&); // Silence a warning under MSVC
43 MovePicker(const Position&, Move, Depth, const History&, SearchStack*, Value);
44 MovePicker(const Position&, Move, Depth, const History&, Square recaptureSq);
45 MovePicker(const Position&, Move, const History&, PieceType parentCapture);
49 void score_captures();
50 void score_noncaptures();
51 void score_evasions();
59 Square recaptureSquare;
60 int captureThreshold, phase;
61 const uint8_t* phasePtr;
62 MoveStack *curMove, *lastMove, *lastNonCapture, *badCaptures;
63 MoveStack moves[MAX_MOVES];
66 #endif // !defined(MOVEPICK_H_INCLUDED)