fix: do not override transposition table

1 files changed, 7 insertions, 7 deletions

diff --git a/src/grossmeister/UCI.rs b/src/grossmeister/UCI.rs
index 3132e72..e88d970 100644
--- a/src/grossmeister/UCI.rs
+++ b/src/grossmeister/UCI.rs
@@ -9,7 +9,7 @@ const AUTHOR: &str = "Eugene Sokolov";
 
 impl Grossmeister {
     pub fn start(&mut self) {
-        let mut search_handle = None;
+        let mut search_handle: Option<JoinHandle<Self>> = None;
 
         loop {
             let mut cmd = String::new();
@@ -90,16 +90,16 @@ impl Grossmeister {
                         }
                     }
                     "go" => {
+                        // Before we go, let's join to the latest search
+                        if let Some(hand) = search_handle.take() {
+                            let better_self = hand.join().unwrap();
+                            self.transposition_table = better_self.transposition_table;
+                        }
+
                         search_handle = Some(self.parse_go(tokens));
                     }
                     "stop" => {
                         self.should_halt.store(true, std::sync::atomic::Ordering::Relaxed);
-                        if let Some(hand) = search_handle.take() {
-                            // Search returns new SELF that is more powerful
-                            // because he evaluated many new positions and
-                            // his transposition table is more saturated
-                            *self = hand.join().unwrap();
-                        }
                     }
                     "ponderhit" => todo!(),
                     "quit" => break,