this should probably sidestep that thing unc0rr keeps bringing up. untested. but then, I've never had it happen. I think what happens is onGameTick20 is called in same tick as onNewTurn and before it...

#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    return a.exec();
}