//////////////////////////////////////////////////////////////////////
//
// FILE: recog.h
// Endgame knowledge recognition class
//
// Part of: Scid (Shane's Chess Information Database)
// Version: 3.4
//
// Notice: Copyright (c) 2002 Shane Hudson. All rights reserved.
//
// Author: Shane Hudson (sgh@users.sourceforge.net)
//
//////////////////////////////////////////////////////////////////////
#include "engine.h"
#include "position.h"
// Recognition value conversion: a recognition score contains a
// regular score shifted left 4 bits to make room for a score flag.
inline int recogValue (scoreFlagT flag, int score) {
return ((score * 16) | flag);
}
inline int recogScore (int value) { return value / 16; }
inline scoreFlagT recogFlag (int value) { return value & 15; }
// The Recognizer class provides score bound information for chess endgames.
namespace Recognizer {
constexpr uint MaxPieces() {
// Only positions with a total of 6 or fewer pieces (including kings
// and pawns) are potentially recognizable.
return 6;
}
int Recognize(Position* pos);
} // namespace Recognizer
//////////////////////////////////////////////////////////////////////
// EOF: recog.h
//////////////////////////////////////////////////////////////////////
