the first last date was 10th.for those who have not registered till 10th only,the date was extended to 14th..those who registered before 10th were not allowed to register in the 10-14 period.for those who didn't register till 14th,the date was extended to 18th.So,those who already registered within 14th,will not be able to register in the 14-18 period.only the new registers can open the registration window now.