public boolean chargeForCity() {
		if (! resForCity()) return false;
		for (int i = 0; i < BRICK_CITY; i++) _hand.remove(Resource.Brick);
		for (int i = 0; i < ORE_CITY; i++) _hand.remove(Resource.Ore);
		for (int i = 0; i < SHEEP_CITY; i++) _hand.remove(Resource.Sheep);
		for (int i = 0; i < TIMBER_CITY; i++) _hand.remove(Resource.Timber);
		for (int i = 0; i < WHEAT_CITY; i++) _hand.remove(Resource.Wheat);
		return true;
	}