feat: do not return PV score out of current bounds

1 files changed, 2 insertions, 8 deletions

diff --git a/src/grossmeister/search.rs b/src/grossmeister/search.rs
index 09c8bc1..d5d6b30 100644
--- a/src/grossmeister/search.rs
+++ b/src/grossmeister/search.rs
@@ -2,7 +2,7 @@ use std::f32::INFINITY;
 
 use crate::{moves::{Move, MoveKind}, board::io::IO};
 
-use super::{Grossmeister, ttable::{NodeType, TTABLE_SIZE, TranspositionTableItem}, evaluation::Score};
+use super::{Grossmeister, ttable::{NodeType, TranspositionTableItem}, evaluation::Score};
 
 const SCORE_MATE: Score = 20_000.0;
 
@@ -50,10 +50,7 @@ impl Grossmeister {
         if let Some(transposition) = self.transposition() {
             if transposition.depth >= depth_left {
                 match transposition.node_type {
-                    NodeType::PV => { // PV-nodes have exact score
-                        return transposition.score
-                    }
-                    NodeType::Cut => {
+                    NodeType::PV | NodeType::Cut => {
                         if transposition.score >= beta {
                             return beta
                         }
@@ -65,9 +62,6 @@ impl Grossmeister {
                         if transposition.score <= alpha {
                             return alpha
                         }
-                        if transposition.score < beta {
-                            beta = transposition.score
-                        }
                     }
                 }
             }