1 files changed, 1 insertions, 0 deletions
diff --git a/src/bitboard.h b/src/bitboard.h
index a816ea6..39f5d80 100644
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -54,6 +54,7 @@ typedef struct {
   bitboard_t bitboards[PIECE_TYPE_COUNT];
   u8 castling;
   u8 turn;
+  u8 passantable_column;
 } position_t;
 
 position_t position_starting();