diff --git a/board/src/square.rs b/board/src/square.rs
index e90b736..bba04e3 100644
--- a/board/src/square.rs
+++ b/board/src/square.rs
@@ -20,7 +20,7 @@ pub struct ParseSquareError;
 #[derive(Debug)]
 pub struct SquareOutOfBoundsError;
 
-#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
+#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
 pub struct Square {
     rank: u8,
     file: u8,