From: Marco Costalba <mcostalba@gmail.com>
Date: Mon, 24 Nov 2008 11:13:08 +0000 (+0100)
Subject: Generate moves for powerful pieces first
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;ds=sidebyside;h=8a0dd93c56f63de467190145116ed6c5cfd54bc1;p=stockfish

Generate moves for powerful pieces first

This seems to reduce searched nodes by a
surprising 2.5%

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
---

diff --git a/src/movegen.cpp b/src/movegen.cpp
index 56caa9a4..7273ca9a 100644
--- a/src/movegen.cpp
+++ b/src/movegen.cpp
@@ -122,15 +122,16 @@ int generate_captures(const Position& pos, MoveStack* mlist) {
   Bitboard target = pos.pieces_of_color(opposite_color(us));
   MoveStack* mlist_start = mlist;
 
+  mlist = generate_piece_moves<QUEEN>(pos, mlist, us, target);
+  mlist = generate_piece_moves<ROOK>(pos, mlist, us, target);
+  mlist = generate_piece_moves<BISHOP>(pos, mlist, us, target);
+  mlist = generate_piece_moves<KNIGHT>(pos, mlist, us, target);
+
   if (us == WHITE)
       mlist = generate_pawn_captures<WHITE>(pos, mlist);
   else
       mlist = generate_pawn_captures<BLACK>(pos, mlist);
 
-  mlist = generate_piece_moves<KNIGHT>(pos, mlist, us, target);
-  mlist = generate_piece_moves<BISHOP>(pos, mlist, us, target);
-  mlist = generate_piece_moves<ROOK>(pos, mlist, us, target);
-  mlist = generate_piece_moves<QUEEN>(pos, mlist, us, target);
   mlist = generate_piece_moves<KING>(pos, mlist, us, target);
   return int(mlist - mlist_start);
 }
diff --git a/src/movepick.cpp b/src/movepick.cpp
index 52c1f728..ee747c94 100644
--- a/src/movepick.cpp
+++ b/src/movepick.cpp
@@ -292,7 +292,6 @@ void MovePicker::score_evasions() {
       } else
           moves[i].score = H.move_ordering_score(pos.piece_on(move_from(m)), m);
   }
-  // FIXME try psqt also here
 }
 
 void MovePicker::score_qcaptures() {