diff --git a/src/bitboard.cpp b/src/bitboard.cpp
index 32330d06..379df012 100644
--- a/src/bitboard.cpp
+++ b/src/bitboard.cpp
@@ -7,7 +7,6 @@
 
 int SquareDistance[SQUARE_NB][SQUARE_NB];
 
-Bitboard SquareBB[SQUARE_NB];
 Bitboard FileBB[FILE_NB];
 Bitboard RankBB[RANK_NB];
 Bitboard AdjacentFilesBB[FILE_NB];
@@ -25,11 +24,6 @@ Bitboard PawnAttackSpan[COLOR_NB][SQUARE_NB];
 
 void Bitboards::init() {
 
-  for (Square s = SQ_A1; s <= SQ_H8; ++s)
-  {
-      SquareBB[s] = 1ULL << s;
-  }
-
   for (File f = FILE_A; f <= FILE_H; ++f)
       FileBB[f] = f > FILE_A ? FileBB[f - 1] << 1 : FileABB;
 
diff --git a/src/bitboard.h b/src/bitboard.h
index 3c436b83..c5f10217 100644
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -51,7 +51,6 @@ extern Bitboard  BishopMagics [SQUARE_NB];
 extern Bitboard* BishopAttacks[SQUARE_NB];
 extern unsigned  BishopShifts [SQUARE_NB];
 
-extern Bitboard SquareBB[SQUARE_NB];
 extern Bitboard FileBB[FILE_NB];
 extern Bitboard RankBB[RANK_NB];
 extern Bitboard AdjacentFilesBB[FILE_NB];
@@ -69,26 +68,6 @@ extern Bitboard PseudoAttacks[PIECE_TYPE_NB][SQUARE_NB];
 /// Overloads of bitwise operators between a Bitboard and a Square for testing
 /// whether a given bit is set in a bitboard, and for setting and clearing bits.
 
-inline Bitboard operator&(Bitboard b, Square s) {
-  return b & SquareBB[s];
-}
-
-inline Bitboard operator|(Bitboard b, Square s) {
-  return b | SquareBB[s];
-}
-
-inline Bitboard operator^(Bitboard b, Square s) {
-  return b ^ SquareBB[s];
-}
-
-inline Bitboard& operator|=(Bitboard& b, Square s) {
-  return b |= SquareBB[s];
-}
-
-inline Bitboard& operator^=(Bitboard& b, Square s) {
-  return b ^= SquareBB[s];
-}
-
 inline bool more_than_one(Bitboard b) {
   return b & (b - 1);
 }