check, mate & en passant methods

src/moves.rs

@@ -265,18 +265,24 @@ impl<'l> Moves<'l> {
         self.array.len()
     }
 
-    /// Returns `true` if en passant is legal.
-    #[inline]
-    pub fn en_passant_is_legal(&self) -> bool {
-        self.en_passant_is_legal
-    }
-
     /// Returns `true` if the king is in check.
     #[inline]
     pub fn is_check(&self) -> bool {
         self.is_check
     }
 
+    /// Returns `true` if there is no legal move on the position.
+    #[inline]
+    pub fn is_mate(&self) -> bool {
+        self.array.len() == 0
+    }
+
+    /// Returns `true` if taking en passant is legal on the position.
+    #[inline]
+    pub fn en_passant_is_legal(&self) -> bool {
+        self.en_passant_is_legal
+    }
+
     /// Returns the move at the given index, if it exists.
     #[inline]
     pub fn get(&self, index: usize) -> Option<Move<'l>> {