X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmovepick.cpp;h=d4242a300de7620e5f58665cb20c7e5ff0aa102c;hp=43f30f7709565e22502e6e94438a0aa91ac663d1;hb=31d4f0b73430677e79873beef16830dc07857ddd;hpb=75d001adddfaa7a2eb57af99cf6c57a12913d2d1

diff --git a/src/movepick.cpp b/src/movepick.cpp
index 43f30f77..d4242a30 100644
--- a/src/movepick.cpp
+++ b/src/movepick.cpp
@@ -71,7 +71,7 @@ MovePicker::MovePicker(const Position& p, bool pv, Move ttm,
   ttMove = ttm;
   mateKiller = (ss.mateKiller == ttm)? MOVE_NONE : ss.mateKiller;
   killer1 = ss.killers[0];
-  killer2 = ss.killers[0];
+  killer2 = ss.killers[1];
   depth = d;
   movesPicked = 0;
   numOfMoves = 0;
@@ -270,10 +270,11 @@ void MovePicker::score_noncaptures() {
       else
           hs = H.move_ordering_score(pos.piece_on(move_from(m)), m);
 
-      // Ensure moves in history are always sorted as first
+      // Ensure history is always preferred to pst
       if (hs > 0)
           hs += 1000;
 
+      // pst based scoring
       moves[i].score = hs + pos.mg_pst_delta(m);
   }
 }
@@ -292,7 +293,6 @@ 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() {