diff --git a/src/board.rs b/src/board.rs
index 8367fe2..8e12050 100644
--- a/src/board.rs
+++ b/src/board.rs
@@ -127,27 +127,27 @@ impl File {
     }
 
     #[inline]
-    pub fn from_char(c: char) -> Option<Self> {
-        Self::from_ascii(c as u8)
+    pub fn from_char(file: char) -> Option<Self> {
+        Self::from_ascii(file as u8)
     }
 
     #[inline]
-    pub(crate) fn to_ascii(self) -> u8 {
+    pub fn to_ascii(self) -> u8 {
         self as u8 + b'a'
     }
 
     #[inline]
-    pub(crate) fn from_ascii(c: u8) -> Option<Self> {
-        (c <= b'h')
+    pub fn from_ascii(file: u8) -> Option<Self> {
+        (file <= b'h')
             .then(|| {
-                c.checked_sub(b'a')
+                file.checked_sub(b'a')
                     .map(|i| unsafe { Self::new_unchecked(i) })
             })
             .flatten()
     }
 
     #[inline]
-    pub(crate) fn bitboard(self) -> Bitboard {
+    pub fn bitboard(self) -> Bitboard {
         Bitboard(0x0101010101010101 << (self as u8))
     }
 }
@@ -207,8 +207,23 @@ impl Rank {
     }
 
     #[inline]
-    pub fn from_char(c: char) -> Option<Self> {
-        Self::from_ascii(c as u8)
+    pub fn from_char(rank: char) -> Option<Self> {
+        Self::from_ascii(rank as u8)
+    }
+
+    #[inline]
+    pub fn to_ascii(self) -> u8 {
+        self as u8 + b'1'
+    }
+
+    #[inline]
+    pub fn from_ascii(rank: u8) -> Option<Self> {
+        (rank <= b'8')
+            .then(|| {
+                rank.checked_sub(b'1')
+                    .map(|i| unsafe { Self::new_unchecked(i) })
+            })
+            .flatten()
     }
 
     #[inline]
@@ -217,22 +232,7 @@ impl Rank {
     }
 
     #[inline]
-    pub(crate) fn to_ascii(self) -> u8 {
-        self as u8 + b'1'
-    }
-
-    #[inline]
-    pub(crate) fn from_ascii(c: u8) -> Option<Self> {
-        (c <= b'8')
-            .then(|| {
-                c.checked_sub(b'1')
-                    .map(|i| unsafe { Self::new_unchecked(i) })
-            })
-            .flatten()
-    }
-
-    #[inline]
-    pub(crate) fn bitboard(self) -> Bitboard {
+    pub fn bitboard(self) -> Bitboard {
         Bitboard(0xFF << ((self as u8) << 3))
     }
 }