refactor: separate threefold_repetitionHEADmaster

1 files changed, 3 insertions, 5 deletions

diff --git a/src/grossmeister/search.rs b/src/grossmeister/search.rs
index fb7e385..2d20e3a 100644
--- a/src/grossmeister/search.rs
+++ b/src/grossmeister/search.rs
@@ -44,8 +44,7 @@ impl Grossmeister {
         let mut principal_variation = Vec::new();
         let color = self.board.color();
 
-        if self.board.positions.iter().filter(|p| **p == self.board.hash).count() >= 3 {
-            // Draw by repetition
+        if self.board.threefold_repetition() {
             return (0.0, principal_variation);
         }
 
@@ -176,9 +175,8 @@ impl Grossmeister {
     pub fn quiscence(&mut self, mut alpha: f32, mut beta: f32, root_distance: u8) -> f32 {
         let color = self.board.color();
 
-        if self.board.positions.iter().filter(|p| **p == self.board.hash).count() >= 3 {
-            // Draw by repetition
-            return 0.0;
+        if self.board.threefold_repetition() {
+            return 0.0
         }
 
         // Mate distance pruning