Reduce limit to 32 piece types

diff --git a/src/types.h b/src/types.h
index 6b0f033..0003e17 100644 (file)
--- a/src/types.h
+++ b/src/types.h
@@ -201,7 +201,7 @@ enum Value : int {
   MidgameLimit  = 15258, EndgameLimit  = 3915
 };
 
-const int PIECE_TYPE_BITS = 6; // PIECE_TYPE_NB = pow(2, PIECE_TYPE_BITS)
+const int PIECE_TYPE_BITS = 5; // PIECE_TYPE_NB = pow(2, PIECE_TYPE_BITS)
 
 enum PieceType {
   NO_PIECE_TYPE, PAWN, KNIGHT, BISHOP, ROOK,