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Give a small penalty for bishop for each pawn on the same colored square

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Joona Kiiski
2013-04-16 21:20:31 +01:00
parent fe72c93141
commit 3e4dfb49a7
5 changed files with 16 additions and 1 deletions
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src/pawns.h
+3
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@@ -40,6 +40,7 @@ struct Entry {
int file_is_half_open(Color c, File f) const { return halfOpenFiles[c] & (1 << int(f)); }
int has_open_file_to_left(Color c, File f) const { return halfOpenFiles[c] & ((1 << int(f)) - 1); }
int has_open_file_to_right(Color c, File f) const { return halfOpenFiles[c] & ~((1 << int(f+1)) - 1); }
int same_colored_pawn_count(Square s, Color c) const { return (BlackSquares & s) ? pawnsOnBlackSquaresCount[c] : pawnsOnWhiteSquaresCount[c]; }
template<Color Us>
Score king_safety(const Position& pos, Square ksq) {
@@ -63,6 +64,8 @@ struct Entry {
Score value;
int halfOpenFiles[COLOR_NB];
Score kingSafety[COLOR_NB];
int pawnsOnWhiteSquaresCount[COLOR_NB];
int pawnsOnBlackSquaresCount[COLOR_NB];
};
typedef HashTable<Entry, 16384> Table;