anchor.diff:  
   void setupSGF(String sgf, GameState gamestate) {
     ParsedGame parsedGame = SGF.parseSGF(sgf);
  -  print(parsedGame.player1);
  -  print(parsedGame.player2);
  +  player1 = parsedGame.player1;
  +  player2 = parsedGame.player2;
     gamestate.initialize(parsedGame.gameEvents);
     gamestate.step(1);
     render(gamestate);
  
positive.code: import '../lib/rules.dart';
  
  var camera = new Camera();
  
  void main() {
    var assetLibrary = new AssetLibrary();
  
negative.code:   context.restore();
  
    context.save();
  
    context.translate(canvas.width / 2 - HexView.width / 2, canvas.height / 2 - HexView.height / 2);
    context.translate(camera.offsetX * 2, camera.offsetY * 2);
  
  