X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmovepick.h;h=90475b3512e15dba6939a4fde9fd130305b15eb1;hp=3e472fb6d25b83086f9167a5de70aadb9c217d7c;hb=c7e31d5aa8e7b51f6580dc0c2a51e2aee15eb817;hpb=c5ec94d0f1b128fc2c691c7231663a345409d5cc

diff --git a/src/movepick.h b/src/movepick.h
index 3e472fb6..90475b35 100644
--- a/src/movepick.h
+++ b/src/movepick.h
@@ -61,6 +61,17 @@ private:
 typedef Stats<false> History;
 typedef Stats<true> Gains;
 
+// FIXME: Document me
+struct RefutationTable {
+
+  void clear() { memset(table, 0, sizeof(table)); }
+  void update(Piece p, Square to, Move m) { table[p][to] = m; }
+  Move get(Piece p, Square to) const { return table[p][to]; }
+
+private:
+  Move table[PIECE_NB][SQUARE_NB]; // Mapping: "move A" -> "move B which refutes move A"
+
+};
 
 /// MovePicker class is used to pick one pseudo legal move at a time from the
 /// current position. The most important method is next_move(), which returns a
@@ -74,7 +85,7 @@ class MovePicker {
   MovePicker& operator=(const MovePicker&); // Silence a warning under MSVC
 
 public:
-  MovePicker(const Position&, Move, Depth, const History&, Search::Stack*, Value);
+  MovePicker(const Position&, Move, Depth, const History&, Search::Stack*, Move, Value);
   MovePicker(const Position&, Move, Depth, const History&, Square);
   MovePicker(const Position&, Move, const History&, PieceType);
   template<bool SpNode> Move next_move();
@@ -88,7 +99,7 @@ private:
   Search::Stack* ss;
   Depth depth;
   Move ttMove;
-  MoveStack killers[2];
+  MoveStack killers[3];
   Square recaptureSquare;
   int captureThreshold, phase;
   MoveStack *cur, *end, *endQuiets, *endBadCaptures;