Moreover, an applicant who has used a remedy which is apparently effective and sufficient cannot be required also to have tried others that were also available but probably no more likely to be successful (see, among many other authorities, Assenov and Others v. Bulgaria, 28 October 1998, § 86, Reports 1998-VIII; Aquilina v. Malta [GC], no. 25642/94, § 39, ECHR 1999-III; and Günaydin v. Turkey (dec.), no. 27526/95, 25 April 2002).