Move validation inside Movebuilder using regex

MoveBuilder.php

@@ -18,7 +18,7 @@ class MoveBuilder {
     }
 
     private function addMove($move){
-        if(!$move || $move == '..' || $move == '*' || strstr($move, '1-') || strstr($move, '-1') || strstr($move, '1/2')){
+        if(!$this->isChessMove($move)){
             return;
         }
         $move = preg_replace("/^([a-h])([18])([QRNB])$/", "$1$2=$3", $move );
@@ -26,6 +26,10 @@ class MoveBuilder {
         $this->currentIndex ++;
     }
 
+    private function isChessMove($move){
+        return preg_match("/([PNBRQK]?[a-h]?[1-8]?x?[a-h][1-8](?:\=[PNBRQK])?|O(-?O){1,2})[\+#]?(\s*[\!\?]+)?/s", $move);
+    }
+
     public function addCommentBeforeFirstMove($comment){
         $comment = trim($comment);
         if(!strlen($comment)){