diff --git a/src/repr/bitboard.rs b/src/repr/bitboard.rs
index fe0ed3f..289be4b 100644
--- a/src/repr/bitboard.rs
+++ b/src/repr/bitboard.rs
@@ -8,7 +8,7 @@ use static_assertions::const_assert;
 
 pub type BitBoardInner = u64;
 
-#[derive(Copy, Clone, PartialEq, Eq, Allocative)]
+#[derive(Copy, Clone, PartialEq, Eq, Allocative, Debug)]
 pub struct BitBoard(BitBoardInner);
 
 // BitBoard should be big enough to fit all points on the board
@@ -24,14 +24,14 @@ impl BitBoard {
         self.get_by_index(coord.0)
     }
 
-    pub const fn set(&mut self, coord: CoordPair, value: bool) {
-        self.set_by_index(coord.0, value);
-    }
-
     const fn get_by_index(&self, index: CoordPairInner) -> bool {
         ((self.0 >> index) & 0b1) != 0b0
     }
 
+    pub const fn set(&mut self, coord: CoordPair, value: bool) {
+        self.set_by_index(coord.0, value);
+    }
+
     const fn set_by_index(&mut self, index: CoordPairInner, value: bool) {
         // PERF! branchless setting of bit (~+3% perf bump)
         self.0 &= !(0b1 << index); // clear bit
@@ -133,4 +133,15 @@ mod test {
         b.set((2, 4).into(), false);
         assert!(!b.get((2, 4).into()));
     }
+
+    #[test]
+    fn dir_multi() {
+        let mut base = BitBoard::from_coord(CoordPair::from_axes(4, 4));
+        base = base.southeast(1);
+        base = base.southeast(1);
+        assert_eq!(
+            base,
+            BitBoard::from_coord(CoordPair::from_axes(4, 4)).southeast(2)
+        );
+    }
 }