fix: do not write result after window cutoff

1 files changed, 9 insertions, 8 deletions

diff --git a/src/board/engine.rs b/src/board/engine.rs
index 1d01e06..a4b72eb 100644
--- a/src/board/engine.rs
+++ b/src/board/engine.rs
@@ -271,6 +271,13 @@ impl Board {
             let search_result = self.negamax_search(alpha, beta, depth, deadline);
             println!("Finished depth({}) {:?} [{:?} left]", depth, search_result, deadline - Instant::now());
 
+            if Instant::now() > deadline {
+                match result {
+                    Some(r) => return r,
+                    None => panic!("Could not find a move in time"),
+                }
+            }
+
             if search_result.1.len() > 0 {
                 depth += 1;
                 alpha = search_result.0 - window_size;
@@ -278,22 +285,16 @@ impl Board {
             } else if search_result.0 <= alpha { // Alpha-cutoff
                 println!("Alpha cutoff {} <= {:?}", search_result.0, (alpha, beta));
                 alpha = search_result.0 - window_size;
+                continue;
             } else if search_result.0 >= beta { // Beta-cutoff
                 println!("Beta cutoff {:?} <= {}", (alpha, beta), search_result.0);
                 beta = search_result.0 + window_size;
+                continue;
             } else {
                 panic!("Can this ever be possible? (probably not)");
             }
 
-            if Instant::now() > deadline {
-                match result {
-                    Some(r) => return r,
-                    None => panic!("Could not find a move in time"),
-                }
-            }
-
             result = Some(search_result);
-
         }
     }
 }