Retire 'Randomness' ucioption

[stockfish] / src / position.cpp

diff --git a/src/position.cpp b/src/position.cpp
index 176806976bb4234105d25826a973097537984b4a..537e574f51e4bc723cd85a3a50545de216f88b22 100644 (file)
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -1752,21 +1752,17 @@ void Position::init_zobrist() {
 
 
 /// Position::init_piece_square_tables() initializes the piece square tables.
-/// This is a two-step operation:  First, the white halves of the tables are
-/// copied from the MgPST[][] and EgPST[][] arrays, with a small random number
-/// added to each entry if the "Randomness" UCI parameter is non-zero.
+/// This is a two-step operation:
+/// First, the white halves of the tables are
+/// copied from the MgPST[][] and EgPST[][] arrays.
 /// Second, the black halves of the tables are initialized by mirroring
 /// and changing the sign of the corresponding white scores.
 
 void Position::init_piece_square_tables() {
 
-  int r = get_option_value_int("Randomness"), i;
   for (Square s = SQ_A1; s <= SQ_H8; s++)
       for (Piece p = WP; p <= WK; p++)
-      {
-          i = (r == 0)? 0 : (genrand_int32() % (r*2) - r);
-          PieceSquareTable[p][s] = make_score(MgPST[p][s] + i, EgPST[p][s] + i);
-      }
+          PieceSquareTable[p][s] = make_score(MgPST[p][s], EgPST[p][s]);
 
   for (Square s = SQ_A1; s <= SQ_H8; s++)
       for (Piece p = BP; p <= BK; p++)