1 files changed, 2 insertions, 2 deletions
diff --git a/src/square.rs b/src/square.rs
index 2e47bea..8a268ea 100644
--- a/src/square.rs
+++ b/src/square.rs
@@ -27,11 +27,11 @@ impl Square {
     }
     /// 0-based rank
     pub fn rank(&self) -> u8 {
-        *self as u8 / 8
+        *self as u8 >> 3
     }
     /// 0-based file
     pub fn file(&self) -> u8 {
-        *self as u8 % 8
+        *self as u8 & 7
     }
 
     pub fn nort_one(&self) -> Self {