X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmove.cpp;h=cb6b5dfdc3bd80ad27f6e3e1dc100103ca86c69d;hp=2a18c1c4eb10eb342d6cf3520e40a4038229146c;hb=fca74b18825b72fa262b927b56130e7024a7272b;hpb=cf85ffbb97fa433dce9dce707e3049ca34b57aa3

diff --git a/src/move.cpp b/src/move.cpp
index 2a18c1c4..cb6b5dfd 100644
--- a/src/move.cpp
+++ b/src/move.cpp
@@ -135,7 +135,7 @@ const std::string move_to_uci(Move move, bool chess960) {
 }
 
 
-/// Overload the << operator, to make it easier to print moves.
+/// Overload the << operator, to make it easier to print moves
 
 std::ostream& operator << (std::ostream& os, Move m) {
 
@@ -144,9 +144,9 @@ std::ostream& operator << (std::ostream& os, Move m) {
 }
 
 
-/// move_is_ok(), for debugging.
+/// move_is_ok(), for debugging
 
 bool move_is_ok(Move m) {
 
-  return square_is_ok(move_from(m)) && square_is_ok(move_to(m));
+  return move_from(m) != move_to(m); // Catches also MOVE_NONE
 }