Remove SEE optimizations

[stockfish] / src / position.cpp

diff --git a/src/position.cpp b/src/position.cpp
index 4e9a6dc7b02388ddae1c8224a9bfd8eeedea2368..4a0075cb841845bff231bd8a8091404b16ea7b5e 100644 (file)
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -1338,6 +1338,7 @@ int Position::see(Square from, Square to) const {
 
   Bitboard attackers, stmAttackers, b;
 
+  assert(!shortcut || from != SQ_NONE);
   assert(square_is_ok(from) || from == SQ_NONE);
   assert(square_is_ok(to));
 
@@ -1350,6 +1351,10 @@ int Position::see(Square from, Square to) const {
   Piece capture = piece_on(to);
   Bitboard occ = occupied_squares();
 
+  // King cannot be recaptured
+  if (type_of_piece(piece) == KING)
+      return seeValues[capture];
+
   // Handle en passant moves
   if (st->epSquare == to && type_of_piece_on(from) == PAWN)
   {
@@ -1488,8 +1493,8 @@ void Position::clear() {
   for (int i = 0; i < 64; i++)
       board[i] = EMPTY;
 
-  for (int i = 0; i < 7; i++)
-      for (int j = 0; j < 8; j++)
+  for (int i = 0; i < 8; i++)
+      for (int j = 0; j < 16; j++)
           pieceList[0][i][j] = pieceList[1][i][j] = SQ_NONE;
 
   sideToMove = WHITE;