set pv if really hit TT

Author: winapiadmin

search.cpp

@@ -49,23 +49,31 @@ namespace engine
     session.seldepth = std::max(session.seldepth, ply);
     uint64_t hash = board.hash();
     Move preferred = Move::none();
-    if (TTEntry *entry = search::tt.lookup(hash))
+    if (entry->getDepth() >= depth)
     {
-      preferred = Move(entry->getMove());
-      if (entry->getDepth() >= depth)
-      {
         Value ttScore = entry->getScore();
         TTFlag flag = entry->getFlag();
-
+    
         if (flag == TTFlag::EXACT)
+        {
+            session.pv[ply][0] = Move(entry->getMove());
+            session.pv[ply][1] = Move::none();
             return ttScore;
-
+        }
+    
         if (flag == TTFlag::LOWERBOUND && ttScore >= beta)
+        {
+            session.pv[ply][0] = Move(entry->getMove());
+            session.pv[ply][1] = Move::none();
             return ttScore;
-
+        }
+    
         if (flag == TTFlag::UPPERBOUND && ttScore <= alpha)
+        {
+            session.pv[ply][0] = Move(entry->getMove());
+            session.pv[ply][1] = Move::none();
             return ttScore;
-      }
+        }
     }
     if (depth == 0)
     {