diff --git a/src/complexagent.rs b/src/complexagent.rs
index 0bbcbc2..c32f295 100644
--- a/src/complexagent.rs
+++ b/src/complexagent.rs
@@ -4,26 +4,27 @@ use crate::{
     misc::offsets,
     piece::Piece,
 };
-use rand::seq::IteratorRandom;
+use rand::{rngs::ThreadRng, seq::IteratorRandom};
 
 pub struct ComplexAgent {
     color: Piece,
+    rng: ThreadRng,
 }
 
 impl Agent for ComplexAgent {
     fn next_move(&mut self, board: &Board) -> Option<(usize, usize)> {
         (0..BOARD_SIZE)
             .zip(0..BOARD_SIZE)
-            .filter(|&(i, j)| board.get(i, j) == &Some(!self.color()))
+            .filter(|&(i, j)| board.get(i, j) == &Some(!self.color))
             .flat_map(|(i, j)| offsets(i, j, 1))
             .filter(|&(i, j)| i < BOARD_SIZE && j < BOARD_SIZE)
             .filter(|&(i, j)| board.get(i, j).is_none())
-            .choose(&mut rand::rng())
+            .choose(&mut self.rng)
             .or_else(|| {
                 (0..BOARD_SIZE)
                     .zip(0..BOARD_SIZE)
                     .filter(|&(i, j)| board.get(i, j).is_none())
-                    .choose(&mut rand::rng())
+                    .choose(&mut self.rng)
             })
     }
 
@@ -37,7 +38,10 @@ impl Agent for ComplexAgent {
 }
 
 impl ComplexAgent {
-    pub const fn new(color: Piece) -> Self {
-        Self { color }
+    pub fn new(color: Piece) -> Self {
+        Self {
+            color,
+            rng: rand::rng(),
+        }
     }
 }