1 files changed, 23 insertions, 0 deletions
diff --git a/src/game_tab/HalfMove.cpp b/src/game_tab/HalfMove.cpp
index 0bac980..e152ce0 100644
--- a/src/game_tab/HalfMove.cpp
+++ b/src/game_tab/HalfMove.cpp
@@ -48,10 +48,27 @@ std::vector<HalfMove *> HalfMove::GetLine(){
     else
       m=m->parent;
   }
+  // Reverse the order to get it in the played order:
   std::reverse(line.begin(), line.end());
   return line;
 }
 
+std::string HalfMove::GetLineAsSAN(){
+  // If not, get the current move line (or first move)
+  // and try to guess opening
+  auto line=GetLine(); // Vector of HalfMove
+  std::string pgn;
+  int count=1;
+  for(int i=0;i<line.size();i++){
+    if(i%2==0){
+      pgn+=std::to_string(count)+".";
+      count+=1;
+    }
+    pgn+=line[i]->move +" ";
+  }
+  return pgn;
+}
+
 HalfMove::HalfMove(HalfMove *m){
   src=m->src;
   dst=m->dst;
@@ -271,6 +288,12 @@ void HalfMove::BuildAndVerify(HalfMove *m, std::string fen) {
   m->fen = arbiter.GetFEN();
   if (m->mainline != nullptr) {
     BuildAndVerify(m->mainline, arbiter.GetFEN());
+  } else {
+    // Otherwise we are on a leaf! So, guess the opening:
+    std::string name,eco;
+    wxGetApp().GetBook().GuessOpening(m->GetLineAsSAN(),name,eco);
+    if(eco.size()>0)
+      m->SetOpening(name,eco);
   }
   for (HalfMove *v : m->variations) {
     BuildAndVerify(v, fen);