fix: correctly process cutoffs in i-deepening

1 files changed, 11 insertions, 8 deletions

diff --git a/src/board/engine.rs b/src/board/engine.rs
index da0f38b..d24b5bb 100644
--- a/src/board/engine.rs
+++ b/src/board/engine.rs
@@ -459,25 +459,28 @@ impl Board {
 
             println!("Finished depth({}) {:?} [{:?} left]", depth, search_result, deadline - Instant::now());
 
-            if search_result.1.len() > 0 {
-                depth += 1;
-                gradual_widening_counter = 0;
-                alpha = search_result.0 - window_size;
-                beta = search_result.0 + window_size;
-            } else if search_result.0 <= alpha { // Alpha-cutoff
+            if search_result.0 <= alpha { // Alpha-cutoff
                 println!("Alpha cutoff {} <= {:?}", search_result.0, (alpha, beta));
                 gradual_widening_counter += 1;
                 beta = alpha;
                 alpha = search_result.0 - window_size * 2.0f32.powi(gradual_widening_counter);
                 continue;
-            } else if search_result.0 >= beta { // Beta-cutoff
+            }
+            if search_result.0 >= beta { // Beta-cutoff
                 println!("Beta cutoff {:?} <= {}", (alpha, beta), search_result.0);
                 gradual_widening_counter += 1;
                 alpha = beta;
                 beta = search_result.0 + window_size * 2.0f32.powi(gradual_widening_counter);
                 continue;
+            }
+
+            if search_result.1.len() > 0 {
+                depth += 1;
+                gradual_widening_counter = 0;
+                alpha = search_result.0 - window_size;
+                beta = search_result.0 + window_size;
             } else {
-                panic!("Can this ever be possible? (probably not)");
+                panic!("Why the fuck no moves?");
             }
 
             result = Some(search_result);