Use FMHs to assist with LMR formula.

[stockfish] / src / movepick.h

diff --git a/src/movepick.h b/src/movepick.h
index 73fbbddb3475f8b7bfaf52753c840167b34d7078..fc090d296b80af9336fbd78151aab01ce1ca37d6 100644 (file)
--- a/src/movepick.h
+++ b/src/movepick.h
@@ -46,11 +46,7 @@ struct Stats {
   T* operator[](Piece pc) { return table[pc]; }
   void clear() { std::memset(table, 0, sizeof(table)); }
 
-  void update(Piece pc, Square to, Move m) {
-
-    if (m != table[pc][to])
-        table[pc][to] = m;
-  }
+  void update(Piece pc, Square to, Move m) { table[pc][to] = m; }
 
   void update(Piece pc, Square to, Value v) {
 
@@ -83,10 +79,9 @@ public:
   MovePicker(const MovePicker&) = delete;
   MovePicker& operator=(const MovePicker&) = delete;
 
-  MovePicker(const Position&, Move, const HistoryStats&, Value);
-  MovePicker(const Position&, Move, Depth, const HistoryStats&, Square);
-  MovePicker(const Position&, Move, Depth, const HistoryStats&,
-             const CounterMoveStats&, const CounterMoveStats&, Move, Search::Stack*);
+  MovePicker(const Position&, Move, Value);
+  MovePicker(const Position&, Move, Depth, Square);
+  MovePicker(const Position&, Move, Depth, Search::Stack*);
 
   Move next_move();
 
@@ -97,10 +92,7 @@ private:
   ExtMove* end() { return endMoves; }
 
   const Position& pos;
-  const HistoryStats& history;
-  const CounterMoveStats* counterMoveHistory;
-  const CounterMoveStats* followupMoveHistory;
-  Search::Stack* ss;
+  const Search::Stack* ss;
   Move countermove;
   Depth depth;
   Move ttMove;