anchor.diff:        drawTextureAt(ctx, _textureName,
             const dartlib.Coordinate(_size ~/ 2, _size ~/ 2));
   
  +    } else if(_squareState == SquareState.revealed) {
  +      final adjCount = _adjacentCount;
  +      final textureName = _numberMap[adjCount];
  +      drawTextureAt(ctx, "$textureName.png",
  +          const dartlib.Coordinate(_size ~/ 2, _size ~/ 2));
       } else {
         ctx.fillStyle = _fillStyle;
         ctx.fillRect(0, 0, width, height);
  
positive.code: class SquareElement extends PElement {
    static const int _size = 80;
    static const String _textureName = "balloon.png";
    final int x, y;
  
    SquareElement(this.x, this.y) : super(_size, _size) {
  
negative.code:       ctx.strokeRect(0.5, 0.5, width, height, 1);
      }
  
  
  
    }
  
  