diff --git a/Board.hpp b/Board.hpp
index 9f30555..af76040 100644
--- a/Board.hpp
+++ b/Board.hpp
@@ -10,9 +10,6 @@
 #include <iosfwd>
 #include <vector>
 
-#define IDX_TO_COLOR(i) static_cast<PieceColor>(i % 2)
-#define IDX_TO_TYPE(i) static_cast<PieceType>(i - (i % 2))
-
 #define BB_NUM 12 // 6 pieces, 2 colors
 
 class Board {