X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fposition.cpp;h=ed5cc43f557a940c949d379be16e1e659012f86f;hp=2bdf1009b28ce8c006cd5cebd825202310dee943;hb=298cf150958212e3270182644fd87f5489823b27;hpb=c8589903777b6e0289640b43fae966ded442af48

diff --git a/src/position.cpp b/src/position.cpp
index 2bdf1009..ed5cc43f 100644
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -317,8 +317,6 @@ Position& Position::set(const string& fenStr, bool isChess960, StateInfo* si, Th
   thisThread = th;
   set_state(st);
 
-  assert(pos_is_ok());
-
   return *this;
 }
 
@@ -340,13 +338,8 @@ void Position::set_castling_right(Color c, Square rfrom) {
   Square kto = relative_square(c, cs == KING_SIDE ? SQ_G1 : SQ_C1);
   Square rto = relative_square(c, cs == KING_SIDE ? SQ_F1 : SQ_D1);
 
-  for (Square s = std::min(rfrom, rto); s <= std::max(rfrom, rto); ++s)
-      if (s != kfrom && s != rfrom)
-          castlingPath[cr] |= s;
-
-  for (Square s = std::min(kfrom, kto); s <= std::max(kfrom, kto); ++s)
-      if (s != kfrom && s != rfrom)
-          castlingPath[cr] |= s;
+  castlingPath[cr] = (between_bb(rfrom, rto) | between_bb(kfrom, kto) | rto | kto)
+                   & ~(square_bb(kfrom) | rfrom);
 }
 
 
@@ -628,7 +621,7 @@ bool Position::pseudo_legal(const Move m) const {
   {
       // We have already handled promotion moves, so destination
       // cannot be on the 8th/1st rank.
-      if (rank_of(to) == relative_rank(us, RANK_8))
+      if ((Rank8BB | Rank1BB) & to)
           return false;
 
       if (   !(attacks_from<PAWN>(from, us) & pieces(~us) & to) // Not a capture