diff --git a/AUTHORS b/AUTHORS
index 462ae5e82d5..f34da92ed59 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -45,6 +45,7 @@ candirufish
 Chess13234
 Chris Cain (ceebo)
 clefrks
+Cody Ho
 Dale Weiler (graphitemaster)
 Daniel Axtens (daxtens)
 Daniel Dugovic (ddugovic)
diff --git a/src/bitboard.h b/src/bitboard.h
index bbed9177507..4faf271704b 100644
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -44,8 +44,6 @@ constexpr Bitboard FileHBB = FileABB << 7;
 constexpr Bitboard Rank1BB = 0xFF;
 constexpr Bitboard Rank2BB = Rank1BB << (8 * 1);
 constexpr Bitboard Rank3BB = Rank1BB << (8 * 2);
-constexpr Bitboard Rank4BB = Rank1BB << (8 * 3);
-constexpr Bitboard Rank5BB = Rank1BB << (8 * 4);
 constexpr Bitboard Rank6BB = Rank1BB << (8 * 5);
 constexpr Bitboard Rank7BB = Rank1BB << (8 * 6);
 constexpr Bitboard Rank8BB = Rank1BB << (8 * 7);
@@ -186,16 +184,6 @@ inline Bitboard between_bb(Square s1, Square s2) {
   return BetweenBB[s1][s2];
 }
 
-
-/// forward_ranks_bb() returns a bitboard representing the squares on the ranks in
-/// front of the given one, from the point of view of the given color. For instance,
-/// forward_ranks_bb(BLACK, SQ_D3) will return the 16 squares on ranks 1 and 2.
-
-constexpr Bitboard forward_ranks_bb(Color c, Square s) {
-  return c == WHITE ? ~Rank1BB << 8 * relative_rank(WHITE, s)
-                    : ~Rank8BB >> 8 * relative_rank(BLACK, s);
-}
-
 /// aligned() returns true if the squares s1, s2 and s3 are aligned either on a
 /// straight or on a diagonal line.
 
diff --git a/src/misc.h b/src/misc.h
index 69d470c22f8..0005fc0fb09 100644
--- a/src/misc.h
+++ b/src/misc.h
@@ -55,14 +55,6 @@ inline TimePoint now() {
         (std::chrono::steady_clock::now().time_since_epoch()).count();
 }
 
-template<class Entry, int Size>
-struct HashTable {
-  Entry* operator[](Key key) { return &table[(uint32_t)key & (Size - 1)]; }
-
-private:
-  std::vector<Entry> table = std::vector<Entry>(Size); // Allocate on the heap
-};
-
 
 enum SyncCout { IO_LOCK, IO_UNLOCK };
 std::ostream& operator<<(std::ostream&, SyncCout);