X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsquare.h;h=e4eab2ac2bad85b6d54717bb41cbc6cf9e86c16e;hp=aa3585c11d3d80659770899bb324c3dd8b3545fa;hb=d6904157aab50f7b2a53843f681b232247e866e2;hpb=02882dfe81eae37ce09ce9af95864cf9fad49bbe

diff --git a/src/square.h b/src/square.h
index aa3585c1..e4eab2ac 100644
--- a/src/square.h
+++ b/src/square.h
@@ -135,8 +135,13 @@ inline Rank relative_rank(Color c, Square s) {
   return square_rank(relative_square(c, s));
 }
 
-inline Color square_color(Square s) {
-  return Color((int(square_file(s)) + int(square_rank(s))) & 1);
+inline SquareColor square_color(Square s) {
+  return SquareColor((int(square_file(s)) + int(square_rank(s))) & 1);
+}
+
+inline bool same_color_squares(Square s1, Square s2) {
+  int s = int(s1) ^ int(s2);
+  return (((s >> 3) ^ s) & 1) == 0;
 }
 
 inline int file_distance(File f1, File f2) {