anchor.diff:  
   <script src="/assets/chess.js"></script>
   <script>
  +
  +// set new board //
  +
   var board,
     game = new Chess(),
     statusEl = $('#status'),
  
positive.code: 
  
    });
  })
  
  </script>
  
negative.code: 
      onDrop(data.object_notation.split('-')[0], data.object_notation.split('-')[1]);
      board.move(data.object_notation);
  
      switchTurn();
  
      var numBlackPawns = (data.fen.split(" ")[0].match(/p/g) || []).length;
      var numWhitePawns = (data.fen.split(" ")[0].match(/P/g) || []).length;
  