From 37b1f56f74e58731084c79dce71f5c118ba2ebb1 Mon Sep 17 00:00:00 2001
From: David Kruger <david@krugerlabs.us>
Date: Fri, 27 Jun 2025 13:55:01 -0700
Subject: [PATCH] Typo fix, the node is not mutable

---
 src/mcts.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mcts.rs b/src/mcts.rs
index 37e2133..bd50edf 100644
--- a/src/mcts.rs
+++ b/src/mcts.rs
@@ -97,7 +97,7 @@ impl<'conf, S: GameState + std::fmt::Debug> MCTS<'conf, S> {
 
     /// MCTS Phase 2: Expansion - Expand the selected node on the tree
     fn expand(&mut self, id: usize) {
-        let parent: &Node<S> = self.arena.get_node_mut(id);
+        let parent: &Node<S> = self.arena.get_node(id);
         let legal_actions: Vec<S::Action> = parent.state.get_legal_actions();
         let parent_state: S = parent.state.clone();
         for action in legal_actions {