X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=370889cca3c2ecd6a3196a2374d3dd2854c1b258;hp=011bec694ff3c52639c8a4a86a74a4515b910f3b;hb=3bb1ab34e4f007549fe9836aa167654f8fef39e6;hpb=b4acf83704c9bab4d78d9ec76ecbdfbfa0b0c88c

diff --git a/src/search.cpp b/src/search.cpp
index 011bec69..370889cc 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -129,7 +129,7 @@ namespace {
 
     void extract_pv_from_tt(Position& pos);
     void insert_pv_in_tt(Position& pos);
-    std::string pv_info_to_uci(const Position& pos, Value alpha, Value beta, int pvLine = 0);
+    std::string pv_info_to_uci(Position& pos, Value alpha, Value beta, int pvLine = 0);
 
     int64_t nodes;
     Value pv_score;
@@ -423,7 +423,7 @@ bool think(Position& pos, bool infinite, bool ponder, int time[], int increment[
   // Look for a book move, only during games, not tests
   if (UseTimeManagement && Options["OwnBook"].value<bool>())
   {
-      if (Options["Book File"].value<std::string>() != OpeningBook.file_name())
+      if (Options["Book File"].value<std::string>() != OpeningBook.name())
           OpeningBook.open(Options["Book File"].value<std::string>());
 
       Move bookMove = OpeningBook.get_move(pos, Options["Best Book Move"].value<bool>());
@@ -702,6 +702,7 @@ namespace {
 
     // Step 1. Initialize node (polling is omitted at root)
     ss->currentMove = ss->bestMove = MOVE_NONE;
+    (ss+2)->killers[0] = (ss+2)->killers[1] = (ss+2)->mateKiller = MOVE_NONE;
 
     // Step 2. Check for aborted search (omitted at root)
     // Step 3. Mate distance pruning (omitted at root)
@@ -1908,8 +1909,9 @@ split_point_start: // At split points actual search starts from here
   void update_history(const Position& pos, Move move, Depth depth,
                       Move movesSearched[], int moveCount) {
     Move m;
+    Value bonus = Value(int(depth) * int(depth));
 
-    H.success(pos.piece_on(move_from(move)), move_to(move), depth);
+    H.update(pos.piece_on(move_from(move)), move_to(move), bonus);
 
     for (int i = 0; i < moveCount - 1; i++)
     {
@@ -1918,7 +1920,7 @@ split_point_start: // At split points actual search starts from here
         assert(m != move);
 
         if (!pos.move_is_capture_or_promotion(m))
-            H.failure(pos.piece_on(move_from(m)), move_to(m), depth);
+            H.update(pos.piece_on(move_from(m)), move_to(m), -bonus);
     }
   }
 
@@ -1946,7 +1948,7 @@ split_point_start: // At split points actual search starts from here
         && after != VALUE_NONE
         && pos.captured_piece_type() == PIECE_TYPE_NONE
         && !move_is_special(m))
-        H.set_gain(pos.piece_on(move_to(m)), move_to(m), -(before + after));
+        H.update_gain(pos.piece_on(move_to(m)), move_to(m), -(before + after));
   }
 
 
@@ -2633,7 +2635,7 @@ split_point_start: // At split points actual search starts from here
   // formatted according to UCI specification and eventually writes the info
   // to a log file. It is called at each iteration or after a new pv is found.
 
-  std::string RootMove::pv_info_to_uci(const Position& pos, Value alpha, Value beta, int pvLine) {
+  std::string RootMove::pv_info_to_uci(Position& pos, Value alpha, Value beta, int pvLine) {
 
     std::stringstream s, l;
     Move* m = pv;